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failure</title> <meta name="description" content="Search results for: slip failure"> <meta name="keywords" content="slip failure"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="slip failure"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 2576</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: slip failure</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2576</span> Failure Mechanism of Slip-Critical Connections on Curved Surface</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bae%20Doobyong">Bae Doobyong</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoo%20Jaejun"> Yoo Jaejun</a>, <a href="https://publications.waset.org/abstracts/search?q=Park%20Ilgyu"> Park Ilgyu</a>, <a href="https://publications.waset.org/abstracts/search?q=Choi%20Seowon"> Choi Seowon</a>, <a href="https://publications.waset.org/abstracts/search?q=Oh%20Chang%20Kook"> Oh Chang Kook</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Variation of slip coefficient in slip-critical connections of curved plates. This paper presents the results of analytical investigations of slip coefficients in slip-critical bolted connections of curved plates. It may depend on the contact stress distribution at interface and the flexibility of spliced plate. Non-linear FEM analyses have been made to simulate the behavior of bolted connections of curved plates with various radiuses of curvature and thicknesses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=slip%20coefficient" title="slip coefficient">slip coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=curved%20plates" title=" curved plates"> curved plates</a>, <a href="https://publications.waset.org/abstracts/search?q=slip-critical%20bolted%20connection" title=" slip-critical bolted connection"> slip-critical bolted connection</a>, <a href="https://publications.waset.org/abstracts/search?q=radius%20of%20curvature" title=" radius of curvature"> radius of curvature</a> </p> <a href="https://publications.waset.org/abstracts/45974/failure-mechanism-of-slip-critical-connections-on-curved-surface" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45974.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">517</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2575</span> Experimental Verification of Different Types of Shear Connectors on Composite Slab</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Siva">A. Siva</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Senthil"> R. Senthil</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Banupriya"> R. Banupriya</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Saravanakumar"> R. Saravanakumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cold-formed steel sheets are widely used as primary tension reinforcement in composite slabs. It also performs as formwork for concreting and better ceiling surface. The major type of failure occurring in composite slab is shear failure. When the composite slab is flexurally loaded, the longitudinal shear is generated and transferred to the steel sheet concrete interface. When the load increases, the interface slip occurs. The slip failure can be resisted by mechanical interface interlock by shear studs. In this paper, the slip failure has been resisted by shear connectors and geometry of the steel sheet alone. The geometry of the sheet is kept constant for all the specimens and the type of shear connectors has been varied. Totally, three types of shear connectors (viz., straight headed, U and J) are bolted to the trapezoidal profile sheet and the concrete is casted over it. After curing, the composite slab is subjected to flexure load and the test results are compared with the numerical results analysed by ABAQUS software. The test result shows that the U-shaped bolted stud has higher flexure strength than the other two types of shear connectors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20formed%20steel%20sheet" title="cold formed steel sheet">cold formed steel sheet</a>, <a href="https://publications.waset.org/abstracts/search?q=headed%20studs" title=" headed studs"> headed studs</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20interlock" title=" mechanical interlock"> mechanical interlock</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20connectors" title=" shear connectors"> shear connectors</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20failure" title=" shear failure"> shear failure</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20failure" title=" slip failure "> slip failure </a> </p> <a href="https://publications.waset.org/abstracts/24077/experimental-verification-of-different-types-of-shear-connectors-on-composite-slab" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24077.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">555</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2574</span> Experimental Investigation of the Failure Behavior of a Retaining Wall Constructed with Soil Bags</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kewei%20Fan">Kewei Fan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sihong%20Liu"> Sihong Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi%20Pik%20Cheng"> Yi Pik Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper aims to analyse the failure behaviour of the retaining wall constructed with soil bags that are formed by filling river sand into woven bags (geosynthetics). Model tests were conducted to obtain the failure mode of the wall, and shear tests on two-layers and five-layers of soil bags were designed to investigate the mechanical characteristics of the interface of soil bags. The test results show that the slip surface in the soil bags-constructed retaining wall is ladder-like due to the inter-layer insertion of soil bags, and the wall above the ladder-like surface undergoes a rigid body translation. The insertion strengthens the shear strength of two-layer staggered-stacked soil bags. Meanwhile, it affects the shape of the slip surface of the five-layer staggered-stacked soil bags. Finally, the interlayer resisting friction of soil bags is found to be related to the shape of the slip surface. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geosynthetics" title="geosynthetics">geosynthetics</a>, <a href="https://publications.waset.org/abstracts/search?q=retaining%20wall" title=" retaining wall"> retaining wall</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20bag" title=" soil bag"> soil bag</a>, <a href="https://publications.waset.org/abstracts/search?q=failure%20mode" title=" failure mode"> failure mode</a>, <a href="https://publications.waset.org/abstracts/search?q=interface" title=" interface"> interface</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20strength" title=" shear strength"> shear strength</a> </p> <a href="https://publications.waset.org/abstracts/105967/experimental-investigation-of-the-failure-behavior-of-a-retaining-wall-constructed-with-soil-bags" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105967.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2573</span> Influence of Hydrophobic Surface on Flow Past Square Cylinder</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Ajith%20Kumar">S. Ajith Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Vaisakh%20S.%20Rajan"> Vaisakh S. Rajan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In external flows, vortex shedding behind the bluff bodies causes to experience unsteady loads on a large number of engineering structures, resulting in structural failure. Vortex shedding can even turn out to be disastrous like the Tacoma Bridge failure incident. We need to have control over vortex shedding to get rid of this untoward condition by reducing the unsteady forces acting on the bluff body. In circular cylinders, hydrophobic surface in an otherwise no-slip surface is found to be delaying separation and minimizes the effects of vortex shedding drastically. Flow over square cylinder stands different from this behavior as separation can takes place from either of the two corner separation points (front or rear). An attempt is made in this study to numerically elucidate the effect of hydrophobic surface in flow over a square cylinder. A 2D numerical simulation has been done to understand the effects of the slip surface on the flow past square cylinder. The details of the numerical algorithm will be presented at the time of the conference. A non-dimensional parameter, Knudsen number is defined to quantify the slip on the cylinder surface based on Maxwell’s equation. The slip surface condition of the wall affects the vorticity distribution around the cylinder and the flow separation. In the numerical analysis, we observed that the hydrophobic surface enhances the shedding frequency and damps down the amplitude of oscillations of the square cylinder. We also found that the slip has a negative effect on aerodynamic force coefficients such as the coefficient of lift (CL), coefficient of drag (CD) etc. and hence replacing the no slip surface by a hydrophobic surface can be treated as an effective drag reduction strategy and the introduction of hydrophobic surface could be utilized for reducing the vortex induced vibrations (VIV) and is found as an effective method in controlling VIV thereby controlling the structural failures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drag%20reduction" title="drag reduction">drag reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20past%20square%20cylinder" title=" flow past square cylinder"> flow past square cylinder</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20control" title=" flow control"> flow control</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrophobic%20surfaces" title=" hydrophobic surfaces"> hydrophobic surfaces</a>, <a href="https://publications.waset.org/abstracts/search?q=vortex%20shedding" title=" vortex shedding "> vortex shedding </a> </p> <a href="https://publications.waset.org/abstracts/27450/influence-of-hydrophobic-surface-on-flow-past-square-cylinder" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27450.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">375</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2572</span> Flow of a Second Order Fluid through Constricted Tube with Slip Velocity at Wall Using Integral Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nosheen%20Zareen%20Khan">Nosheen Zareen Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Majeed%20Siddiqui"> Abdul Majeed Siddiqui</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Afzal%20Rana"> Muhammad Afzal Rana</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The steady flow of a second order fluid through constricted tube with slip velocity at wall is modeled and analyzed theoretically. The governing equations are simplified by implying no slip in radial direction. Based on Karman Pohlhausen procedure polynomial solution for axial velocity profile is presented. An expressions for pressure gradient, shear stress, separation and reattachment points and radial velocity are also calculated. The effect of slip and no slip velocity on velocity, shear stress, pressure gradient are discussed and depicted graphically. It is noted that when Reynolds number increases velocity of the fluid decreases in both slip and no slip conditions. It is also found that the wall shear stress, separation and reattachment points are strongly effected by Reynolds number. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=approximate%20solution" title="approximate solution">approximate solution</a>, <a href="https://publications.waset.org/abstracts/search?q=constricted%20tube" title=" constricted tube"> constricted tube</a>, <a href="https://publications.waset.org/abstracts/search?q=non-Newtonian%20fluids" title=" non-Newtonian fluids"> non-Newtonian fluids</a>, <a href="https://publications.waset.org/abstracts/search?q=Reynolds%20number" title=" Reynolds number"> Reynolds number</a> </p> <a href="https://publications.waset.org/abstracts/34309/flow-of-a-second-order-fluid-through-constricted-tube-with-slip-velocity-at-wall-using-integral-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34309.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">398</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2571</span> Slip Limit Prediction of High-Strength Bolt Joints Based on Local Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chang%20He">Chang He</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Tamura"> Hiroshi Tamura</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Katsuchi"> Hiroshi Katsuchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiaqi%20Wang"> Jiaqi Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the aim is to infer the slip limit (static friction limit) of contact interfaces in bolt friction joints by analyzing other bolt friction joints with the same contact surface but in a different shape. By using the Weibull distribution to deal with microelements on the contact surface statistically, the slip limit of a certain type of bolt joint was predicted from other types of bolt joint with the same contact surface. As a result, this research succeeded in predicting the slip limit of bolt joins with different numbers of contact surfaces and with different numbers of bolt rows. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bolt%20joints" title="bolt joints">bolt joints</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20coefficient" title=" slip coefficient"> slip coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title=" finite element method"> finite element method</a>, <a href="https://publications.waset.org/abstracts/search?q=Weibull%20distribution" title=" Weibull distribution"> Weibull distribution</a> </p> <a href="https://publications.waset.org/abstracts/153579/slip-limit-prediction-of-high-strength-bolt-joints-based-on-local-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153579.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">170</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2570</span> Improving Inelastic Capacity of Cold-Formed Steel Beams Using Slotted Blotted Connection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marzie%20Shahini">Marzie Shahini</a>, <a href="https://publications.waset.org/abstracts/search?q=Alireza%20Bagheri%20Sabbagh"> Alireza Bagheri Sabbagh</a>, <a href="https://publications.waset.org/abstracts/search?q=Rasoul%20Mirghaderi"> Rasoul Mirghaderi</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20C.%20Davidson"> Paul C. Davidson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The focus of this paper is to incorporating the slotted bolted connection into the cold-formed steel (CFS) beams with aim of increasing inelastic bending capacity through bolt slip. An extensive finite element analysis was conducted on the through plate CFS bolted connections which are equipped with the slotted hole. The studied parameters in this paper included the following: CFS beam section geometry, the value of slip force, CFS beam thickness. The numerical results indicate that CFS slotted bolted connection exhibit higher inelastic capacity in terms of ductility compare to connection with standards holes. Moreover, the effect of slip force was analysed by comparing the moment-rotation curves of different models with different slip force value. As a result, as the slip force became lower, there was a tendency for the plastic strain to extend from the CFS member to the connection region. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=slip-critical%20bolted%20connection" title="slip-critical bolted connection">slip-critical bolted connection</a>, <a href="https://publications.waset.org/abstracts/search?q=inelastic%20capacity" title=" inelastic capacity"> inelastic capacity</a>, <a href="https://publications.waset.org/abstracts/search?q=slotted%20holes" title=" slotted holes"> slotted holes</a>, <a href="https://publications.waset.org/abstracts/search?q=cold-formed%20steel" title=" cold-formed steel"> cold-formed steel</a>, <a href="https://publications.waset.org/abstracts/search?q=bolt%20slippage" title=" bolt slippage"> bolt slippage</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20force" title=" slip force"> slip force</a> </p> <a href="https://publications.waset.org/abstracts/59462/improving-inelastic-capacity-of-cold-formed-steel-beams-using-slotted-blotted-connection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59462.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">431</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2569</span> Second-Order Slip Flow and Heat Transfer in a Long Isothermal Microchannel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huei%20Chu%20Weng">Huei Chu Weng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chien-Hung%20Liu"> Chien-Hung Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a study on the effect of second-order slip and jump on forced convection through a long isothermally heated or cooled planar microchannel. The fully developed solutions of thermal flow fields are analytically obtained on the basis of the second-order Maxwell-Burnett slip and Smoluchowski jump boundary conditions. Results reveal that the second-order term in the Karniadakis slip boundary condition is found to contribute a negative velocity slip and then to lead to a higher pressure drop as well as a higher fluid temperature for the heated-wall case or to a lower fluid temperature for the cooled-wall case. These findings are contrary to predictions made by the Deissler model. In addition, the role of second-order slip becomes more significant when the Knudsen number increases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microfluidics" title="microfluidics">microfluidics</a>, <a href="https://publications.waset.org/abstracts/search?q=forced%20convection" title=" forced convection"> forced convection</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20rarefaction" title=" gas rarefaction"> gas rarefaction</a>, <a href="https://publications.waset.org/abstracts/search?q=second-order%20boundary%20conditions" title=" second-order boundary conditions"> second-order boundary conditions</a> </p> <a href="https://publications.waset.org/abstracts/26201/second-order-slip-flow-and-heat-transfer-in-a-long-isothermal-microchannel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26201.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2568</span> Analysis of Slip Flow Heat Transfer between Asymmetrically Heated Parallel Plates </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hari%20Mohan%20Kushwaha">Hari Mohan Kushwaha</a>, <a href="https://publications.waset.org/abstracts/search?q=Santosh%20Kumar%20Sahu"> Santosh Kumar Sahu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study, analysis of heat transfer is carried out in the slip flow region for the fluid flowing between two parallel plates by employing the asymmetric heat fluxes at surface of the plates. The flow is assumed to be hydrodynamically and thermally fully developed for the analysis. The second order velocity slip and viscous dissipation effects are considered for the analysis. Closed form expressions are obtained for the Nusselt number as a function of Knudsen number and modified Brinkman number. The limiting condition of the present prediction for Kn = 0, Kn2 = 0, and Brq1 = 0 is considered and found to agree well with other analytical results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Knudsen%20number" title="Knudsen number">Knudsen number</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20Brinkman%20number" title=" modified Brinkman number"> modified Brinkman number</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20flow" title=" slip flow"> slip flow</a>, <a href="https://publications.waset.org/abstracts/search?q=velocity%20slip" title=" velocity slip"> velocity slip</a> </p> <a href="https://publications.waset.org/abstracts/17458/analysis-of-slip-flow-heat-transfer-between-asymmetrically-heated-parallel-plates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17458.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">387</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2567</span> Second-Order Slip Flow and Heat Transfer in a Long Isoflux Microchannel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huei%20Chu%20Weng">Huei Chu Weng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a study on the effect of second-order slip on forced convection through a long isoflux heated or cooled planar microchannel. The fully developed solutions of flow and thermal fields are analytically obtained on the basis of the second-order Maxwell-Burnett slip and local heat flux boundary conditions. Results reveal that when the average flow velocity increases or the wall heat flux amount decreases, the role of thermal creep becomes more insignificant, while the effect of second-order slip becomes larger. The second-order term in the Deissler slip boundary condition is found to contribute a positive velocity slip and then to lead to a lower pressure drop as well as a lower temperature rise for the heated-wall case or to a higher temperature rise for the cooled-wall case. These findings are contrary to predictions made by the Karniadakis slip model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microfluidics" title="microfluidics">microfluidics</a>, <a href="https://publications.waset.org/abstracts/search?q=forced%20convection" title=" forced convection"> forced convection</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20creep" title=" thermal creep"> thermal creep</a>, <a href="https://publications.waset.org/abstracts/search?q=second-order%20boundary%20conditions" title=" second-order boundary conditions"> second-order boundary conditions</a> </p> <a href="https://publications.waset.org/abstracts/7785/second-order-slip-flow-and-heat-transfer-in-a-long-isoflux-microchannel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7785.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">314</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2566</span> Influencing Factors on Stability of Shale with Silt Layers at Slopes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20K.%20M.%20Badrul%20Alam">A. K. M. Badrul Alam</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshiaki%20Fujii"> Yoshiaki Fujii</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahid%20Hasan%20Dipu"> Nahid Hasan Dipu</a>, <a href="https://publications.waset.org/abstracts/search?q=Shakil%20Ahmed%20Razo"> Shakil Ahmed Razo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shale rockmasses often include silt layers, impacting slope stability in construction and mining. Analyzing their interaction is crucial for long-term stability. A study used an elastoplastic model, incorporating the stress transfer method and Coulomb's criterion, to assess a shale rock mass with silt layers. It computed stress distribution, assessed failure potential, and identified vulnerable regions where nodal forces were calculated for a comprehensive analysis. A shale rock mass ranging from 14.75 to 16.75 meters thick, with silt layers varying from 0.36 to 0.5 meters, was considered in the model. It examined four silt layer conditions: horizontal (SiHL), vertical (SiVL), inclined against slope (SiIincAGS), and along slope (SilincALO). Mechanical parameters like uniaxial compressive strength (UCS), tensile strength (TS), Young’s modulus (E), Poisson’s ratio, and density were adjusted for varied scenarios: UCS (0.5 to 5 MPa), TS (0.1 to 1 MPa), and E (6 to 60 MPa). In elastic analysis of shale rock masses, stress distributions vary based on layer properties. When shale and silt layers have the same elasticity modulus (E), stress concentrates at corners. If the silt layer has a lower E than shale, marginal changes in maximum stress (σmax) occur for SilHL. A decrease in σmax is evident at SilVL. Slight variations in σmax are observed for SilincAGS and SilincALO. In the elastoplastic analysis, the overall decrease of 20%, 40%, 60%, 80%, and 90% was considered. For SilHL:(i) Same E, UCS, and TS for silt layer and shale, UCS/TS ratio 5: strength decrease led to shear (S), tension then shear (T then S) failure; noticeable failure at 60% decrease, significant at 80%, collapse at 90%. (ii) Lower E for silt layer, same strength as shale: No significant differences. (iii) Lower E and UCS, silt layer strength 1/10: No significant differences. For SilVL: (i) Same E, UCS, and TS for silt layer and shale, UCS/TS ratio 5: Similar effects as SilHL. (ii) Lower E for silt layer, same strength as shale: Slip occurred. (iii) Lower E and UCS, silt layer strength 1/10: Bitension failure also observed with larger slip. For SilincAGS: (i) Same E, UCS, and TS for silt layer and shale, UCS/TS ratio 5: Effects similar to SilHL. (ii) Lower E for silt layer, same strength as shale: Slip occurred. (iii) Lower E and UCS, silt layer strength 1/10: Tension failure also observed with larger slip. For SilincALO: (i) Same E, UCS, and TS for silt layer and shale, UCS/TS ratio 5: Similar to SilHL with tension failure. (ii) Lower E for silt layer, same strength as shale: No significant differences; failure diverged. (iii) Lower E and UCS, silt layer strength 1/10: Bitension failure also observed with larger slip; failure diverged. Toppling failure was observed for lower E cases of SilVL and SilincAGS. The presence of silt interlayers in shale greatly impacts slope stability. Designing slopes requires careful consideration of both the silt and shale's mechanical properties. The temporal degradation of strength in these layers is a major concern. Thus, slope design must comprehensively analyze the immediate and long-term mechanical behavior of interlayer silt and shale to effectively mitigate instability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=shale%20rock%20masses" title="shale rock masses">shale rock masses</a>, <a href="https://publications.waset.org/abstracts/search?q=silt%20layers" title=" silt layers"> silt layers</a>, <a href="https://publications.waset.org/abstracts/search?q=slope%20stability" title=" slope stability"> slope stability</a>, <a href="https://publications.waset.org/abstracts/search?q=elasto-plastic%20model" title=" elasto-plastic model"> elasto-plastic model</a>, <a href="https://publications.waset.org/abstracts/search?q=temporal%20degradation" title=" temporal degradation"> temporal degradation</a> </p> <a href="https://publications.waset.org/abstracts/182094/influencing-factors-on-stability-of-shale-with-silt-layers-at-slopes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182094.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">56</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2565</span> Impact of the Xanthan Gum on Rheological Properties of Ceramic Slip</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souad%20%20Hassene%20Daouadji">Souad Hassene Daouadji</a>, <a href="https://publications.waset.org/abstracts/search?q=Larbi%20%20Hammadi"> Larbi Hammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkrim%20%20Hazzab"> Abdelkrim Hazzab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The slips intended for the manufacture of ceramics must have rheological properties well-defined in order to bring together the qualities required for the casting step (good fluidity for feeding the molds easily settles while generating a regular settling of the dough and for the dehydration phase of the dough in the mold a setting time relatively short is required to have a sufficient refinement which allows demolding both easy and fast). Many additives haveadded in slip of ceramic in order to improve their rheological properties. In this study, we investigated the impact of xanthan gumon rheological properties of ceramic Slip. The modified Cross model is used to fit the stationary flow curves of ceramic slip at different concentration of xanthan added. The thixotropic behavior studied of mixture ceramic slip-xanthan gumat constant temperature is analyzed by using a structural kinetic model (SKM) in order to account for time dependent effect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ceramic%20slip" title="ceramic slip">ceramic slip</a>, <a href="https://publications.waset.org/abstracts/search?q=xanthan%20gum" title=" xanthan gum"> xanthan gum</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20cross%20model" title=" modified cross model"> modified cross model</a>, <a href="https://publications.waset.org/abstracts/search?q=thixotropy" title=" thixotropy"> thixotropy</a>, <a href="https://publications.waset.org/abstracts/search?q=viscosity" title=" viscosity"> viscosity</a> </p> <a href="https://publications.waset.org/abstracts/146505/impact-of-the-xanthan-gum-on-rheological-properties-of-ceramic-slip" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146505.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">191</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2564</span> Analysis of Wire Coating for Heat Transfer Flow of a Viscoelastic PTT Fluid with Slip Boundary Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rehan%20Ali%20Shah">Rehan Ali Shah</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Siddiqui"> A. M. Siddiqui</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Haroon"> T. Haroon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Slip boundary value problem in wire coating analysis with heat transfer is examined. The fluid is assumed to be viscoelastic PTT (Phan-Thien and Tanner). The rheological constitutive equation of PTT fluid model simulates various polymer melts. Therefore, the current consequences are valuable in a number of realistic situations. Effects of slip parameter γ as well as εDec^2 (viscoelastic index) on the axial velocity, shear stress, normal stress, average velocity, volume flux, thickness of coated wire, shear stress, force on the total wire and temperature distribution profiles have been investigated. A new direction is explored to analyze the flow with the slip parameter. The slippage at the boundaries plays an important role in thickness of coated wire. It is noted that as the slip parameter increases the flow rate and thickness of coated wire increases while, temperature distribution decreases. The results reduce to no slip when the slip parameter is vanished. Furthermore, we can obtain the results for Maxwell and viscous model by setting ε and λ equal to zero respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wire%20coating" title="wire coating">wire coating</a>, <a href="https://publications.waset.org/abstracts/search?q=straight%20annular%20die" title=" straight annular die"> straight annular die</a>, <a href="https://publications.waset.org/abstracts/search?q=PTT%20fluid" title=" PTT fluid"> PTT fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20boundary%20conditions" title=" slip boundary conditions"> slip boundary conditions</a> </p> <a href="https://publications.waset.org/abstracts/42279/analysis-of-wire-coating-for-heat-transfer-flow-of-a-viscoelastic-ptt-fluid-with-slip-boundary-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42279.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">363</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2563</span> Slip Suppression Sliding Mode Control with Various Chattering Functions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shun%20Horikoshi">Shun Horikoshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tohru%20Kawabe"> Tohru Kawabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study presents performance analysis results of SMC (Sliding mode control) with changing the chattering functions applied to slip suppression problem of electric vehicles (EVs). In SMC, chattering phenomenon always occurs through high frequency switching of the control inputs. It is undesirable phenomenon and degrade the control performance, since it causes the oscillations of the control inputs. Several studies have been conducted on this problem by introducing some general saturation function. However, study about whether saturation function was really best and the performance analysis when using the other functions, weren’t being done so much. Therefore, in this paper, several candidate functions for SMC are selected and control performance of candidate functions is analyzed. In the analysis, evaluation function based on the trade-off between slip suppression performance and chattering reduction performance is proposed. The analyses are conducted in several numerical simulations of slip suppression problem of EVs. Then, we can see that there is no difference of employed candidate functions in chattering reduction performance. On the other hand, in slip suppression performance, the saturation function is excellent overall. So, we conclude the saturation function is most suitable for slip suppression sliding mode control. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode%20control" title="sliding mode control">sliding mode control</a>, <a href="https://publications.waset.org/abstracts/search?q=chattering%20function" title=" chattering function"> chattering function</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20vehicle" title=" electric vehicle"> electric vehicle</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20suppression" title=" slip suppression"> slip suppression</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20analysis" title=" performance analysis"> performance analysis</a> </p> <a href="https://publications.waset.org/abstracts/75656/slip-suppression-sliding-mode-control-with-various-chattering-functions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75656.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">326</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2562</span> MP-SMC-I Method for Slip Suppression of Electric Vehicles under Braking</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tohru%20Kawabe">Tohru Kawabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a new SMC (Sliding Mode Control) method with MP (Model Predictive Control) integral action for the slip suppression of EV (Electric Vehicle) under braking is proposed. The proposed method introduce the integral term with standard SMC gain , where the integral gain is optimized for each control period by the MPC algorithms. The aim of this method is to improve the safety and the stability of EVs under braking by controlling the wheel slip ratio. There also include numerical simulation results to demonstrate the effectiveness of the method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode%20control" title="sliding mode control">sliding mode control</a>, <a href="https://publications.waset.org/abstracts/search?q=model%20predictive%20control" title=" model predictive control"> model predictive control</a>, <a href="https://publications.waset.org/abstracts/search?q=integral%20action" title=" integral action"> integral action</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20vehicle" title=" electric vehicle"> electric vehicle</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20suppression" title=" slip suppression"> slip suppression</a> </p> <a href="https://publications.waset.org/abstracts/28617/mp-smc-i-method-for-slip-suppression-of-electric-vehicles-under-braking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28617.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">561</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2561</span> Unsteady MHD Thin Film Flow of a Third-Grade Fluid with Heat Transfer and Slip Boundary Condition Down an Inclined Plane</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Y.%20M.%20Aiyesimi">Y. M. Aiyesimi</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20T.%20Okedayo"> G. T. Okedayo</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20W.%20Lawal"> O. W. Lawal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An investigation is made for unsteady MHD thin film flow of a third grade fluid down an inclined plane with slip boundary condition. The non-linear partial differential equation governing the flow and heat transfer are evaluated numerically using computer software called Maple to obtain velocity and temperature profile. The effect of slip and other various physical parameter on both velocity and temperature profile obtained are studied through several graphs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=non-Newtonian%20fluid" title="non-Newtonian fluid">non-Newtonian fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=MHD%20flow" title=" MHD flow"> MHD flow</a>, <a href="https://publications.waset.org/abstracts/search?q=third-grade%20fluid" title=" third-grade fluid"> third-grade fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=Maple" title=" Maple"> Maple</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20boundary%20condition" title=" slip boundary condition"> slip boundary condition</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer "> heat transfer </a> </p> <a href="https://publications.waset.org/abstracts/11534/unsteady-mhd-thin-film-flow-of-a-third-grade-fluid-with-heat-transfer-and-slip-boundary-condition-down-an-inclined-plane" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11534.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">455</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2560</span> A Discrete Element Method-Based Simulation of Toppling Failure Considering Block Interaction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hooman%20Dabirmanesh">Hooman Dabirmanesh</a>, <a href="https://publications.waset.org/abstracts/search?q=Attila%20M.%20Zsaki"> Attila M. Zsaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The toppling failure mode in a rock mass is considerably different from the most common sliding failure type along an existing or an induced slip plane. Block toppling is observed in a rock mass which consists of both a widely-spaced basal cross-joint set and a closely-spaced discontinuity set dipping into the slope. For this case, failure occurs when the structure cannot bear the tensile portion of bending stress, and the columns or blocks overturn by their own weight. This paper presents a particle-based discrete element model of rock blocks subjected to a toppling failure where geometric conditions and interaction among blocks are investigated. A series of parametric studies have been conducted on particles’ size, arrangement and bond contact among of particles which are made the blocks. Firstly, a numerical investigation on a one-block system was verified. Afterward, a slope consisting of multi-blocks was developed to study toppling failure and interaction forces between blocks. The results show that the formation of blocks, especially between the block and basal plane surface, can change the process of failure. The results also demonstrate that the initial configuration of particles used to form the blocks has a significant role in achieving accurate simulation results. The size of particles and bond contacts have a considerable influence to change the progress of toppling failure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=block%20toppling%20failure" title="block toppling failure">block toppling failure</a>, <a href="https://publications.waset.org/abstracts/search?q=contact%20interaction" title=" contact interaction"> contact interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20element" title=" discrete element"> discrete element</a>, <a href="https://publications.waset.org/abstracts/search?q=particle%20size" title=" particle size"> particle size</a>, <a href="https://publications.waset.org/abstracts/search?q=random%20generation" title=" random generation"> random generation</a> </p> <a href="https://publications.waset.org/abstracts/92612/a-discrete-element-method-based-simulation-of-toppling-failure-considering-block-interaction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92612.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">201</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2559</span> Effect of Boundary Condition on Granular Pressure of Gas-Solid Flow in a Rotating Drum</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rezwana%20Rahman">Rezwana Rahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Various simulations have been conducted to understand the particle's macroscopic behavior in the solid-gas multiphase flow in rotating drums in the past. In these studies, the particle-wall no-slip boundary condition was usually adopted. However, the non-slip boundary condition is rarely encountered in real systems. A little effort has been made to investigate the particle behavior at slip boundary conditions. The paper represents a study of the gas-solid flow in a horizontal rotating drum at a slip boundary wall condition. Two different sizes of particles with the same density have been considered. The Eulerian–Eulerian multiphase model with the kinetic theory of granular flow was used in the simulations. The granular pressure at the rolling flow regime with specularity coefficient 1 was examined and compared with that obtained based on the no-slip boundary condition. The results reveal that the profiles of granular pressure distribution on the transverse plane of the drum are similar for both boundary conditions. But, overall, compared with those for the no-slip boundary condition, the values of granular pressure for specularity coefficient 1 are larger for the larger particle and smaller for the smaller particle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boundary%20condition" title="boundary condition">boundary condition</a>, <a href="https://publications.waset.org/abstracts/search?q=eulerian%E2%80%93eulerian" title=" eulerian–eulerian"> eulerian–eulerian</a>, <a href="https://publications.waset.org/abstracts/search?q=multiphase" title=" multiphase"> multiphase</a>, <a href="https://publications.waset.org/abstracts/search?q=specularity%20coefficient" title=" specularity coefficient"> specularity coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=transverse%20plane" title=" transverse plane"> transverse plane</a> </p> <a href="https://publications.waset.org/abstracts/138424/effect-of-boundary-condition-on-granular-pressure-of-gas-solid-flow-in-a-rotating-drum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138424.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">219</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2558</span> Productivity Improvement in the Propeller Shaft Manufacturing Process </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Won%20Jung">Won Jung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In automotive, propeller shaft is the device for transferring power from engine to axle via transmission, and the slip yoke is one of the main parts in the component. Since the propeller shafts are subject to torsion and shear stress, they need to be strong enough to bear the stress. The purpose of this research is to improve the productivity of slip yoke for automotive propeller shaft. We present how to redesign the component that currently manufactured as a forged single body type. The research was focused on not only reducing processing time but insuring durability of the component simultaneously. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automotive" title="automotive">automotive</a>, <a href="https://publications.waset.org/abstracts/search?q=propeller%20shaft" title=" propeller shaft"> propeller shaft</a>, <a href="https://publications.waset.org/abstracts/search?q=productivity" title=" productivity"> productivity</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20yoke" title=" slip yoke"> slip yoke</a> </p> <a href="https://publications.waset.org/abstracts/17015/productivity-improvement-in-the-propeller-shaft-manufacturing-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17015.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">378</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2557</span> Analytical Formulae for Parameters Involved in Side Slopes of Embankments Stability</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdulrahman%20Abdulrahman">Abdulrahman Abdulrahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Abir%20Abdulrahman"> Abir Abdulrahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The stability of slopes of earthen embankments is usually examined by Swedish slip circle method or the slices method. The factor of safety against sliding using Fellenius procedure depends upon the angle formed by the arc of sliding at the center ψ and the radius of the slip circle r. The values of both mentioned parameters ψ and r aren't precisely predicted because they are measured from the drawing. In this paper, analytical formulae were derived for finding the exact values of both ψ and r. Also this paper presents the different conditions of intersections the slip circle with the body of an earthen dam and the coordinate of intersection points. Numerical examples are chosen for demonstration the proposed solution <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=earthen%20dams%20stability" title="earthen dams stability">earthen dams stability</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=""></a>, <a href="https://publications.waset.org/abstracts/search?q=earthen%20embankments%20stability" title=" earthen embankments stability"> earthen embankments stability</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=Fellenius%20method" title=" Fellenius method"> Fellenius method</a>, <a href="https://publications.waset.org/abstracts/search?q=hydraulic%20structures" title=" hydraulic structures"> hydraulic structures</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=side%20slopes%20stability" title=" side slopes stability"> side slopes stability</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=slices%20method" title=" slices method"> slices method</a>, <a href="https://publications.waset.org/abstracts/search?q=Swedish%20slip%20circle" title=" Swedish slip circle"> Swedish slip circle</a> </p> <a href="https://publications.waset.org/abstracts/92020/analytical-formulae-for-parameters-involved-in-side-slopes-of-embankments-stability" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92020.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">165</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2556</span> Free Convection from a Perforated Spinning Cone with Heat Generation, Temperature-Dependent Viscosity and Partial Slip</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gilbert%20Makanda">Gilbert Makanda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problem of free convection from a perforated spinning cone with viscous dissipation, temperature-dependent viscosity, and partial slip was studied. The boundary layer velocity and temperature profiles were numerically computed for different values of the spin, viscosity variation, inertia drag force, Eckert, suction/blowing parameters. The partial differential equations were transformed into a system of ordinary differential equations which were solved using the fourth-order Runge-Kutta method. This paper considered the effect of partial slip and spin parameters on the swirling velocity profiles which are rarely reported in the literature. The results obtained by this method was compared to those in the literature and found to be in agreement. Increasing the viscosity variation parameter, spin, partial slip, Eckert number, Darcian drag force parameters reduce swirling velocity profiles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=free%20convection" title="free convection">free convection</a>, <a href="https://publications.waset.org/abstracts/search?q=suction%2Finjection" title=" suction/injection"> suction/injection</a>, <a href="https://publications.waset.org/abstracts/search?q=partial%20slip" title=" partial slip"> partial slip</a>, <a href="https://publications.waset.org/abstracts/search?q=viscous%20dissipation" title=" viscous dissipation"> viscous dissipation</a> </p> <a href="https://publications.waset.org/abstracts/74530/free-convection-from-a-perforated-spinning-cone-with-heat-generation-temperature-dependent-viscosity-and-partial-slip" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74530.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">248</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2555</span> Plasticity in Matrix Dominated Metal-Matrix Composite with One Active Slip Based Dislocation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Temesgen%20Takele%20Kasa">Temesgen Takele Kasa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main aim of this paper is to suggest one active slip based continuum dislocation approach to matrix dominated MMC plasticity analysis. The approach centered the free energy principles through the continuum behavior of dislocations combined with small strain continuum kinematics. The analytical derivation of this method includes the formulation of one active slip system, the thermodynamic approach of dislocations, determination of free energy, and evolution of dislocations. In addition zero and non-zero energy dissipation analysis of dislocation evolution is also formulated by using varational energy minimization method. In general, this work shows its capability to analyze the plasticity of matrix dominated MMC with inclusions. The proposed method is also found to be capable of handling plasticity of MMC. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20slip" title="active slip">active slip</a>, <a href="https://publications.waset.org/abstracts/search?q=continuum%20dislocation" title=" continuum dislocation"> continuum dislocation</a>, <a href="https://publications.waset.org/abstracts/search?q=distortion" title=" distortion"> distortion</a>, <a href="https://publications.waset.org/abstracts/search?q=dominated" title=" dominated"> dominated</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20dissipation" title=" energy dissipation"> energy dissipation</a>, <a href="https://publications.waset.org/abstracts/search?q=matrix%20dominated" title=" matrix dominated"> matrix dominated</a>, <a href="https://publications.waset.org/abstracts/search?q=plasticity" title=" plasticity"> plasticity</a> </p> <a href="https://publications.waset.org/abstracts/66664/plasticity-in-matrix-dominated-metal-matrix-composite-with-one-active-slip-based-dislocation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66664.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">388</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2554</span> Earth Tremors in Nigeria: A Precursor to Major Disaster?</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oluseyi%20Adunola%20Bamisaiye">Oluseyi Adunola Bamisaiye</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The frequency of occurrence of earth tremor in Nigeria has increased tremendously in recent years. Slow earthquakes/ tremor have preceded some large earthquakes in some other regions of the world and the Nigerian case may not be an exception. Timely and careful investigation of these tremors may reveal their relation to large earthquakes and provides important clues to constrain the slip rates on tectonic faults. Thus making it imperative to keep under watch and also study carefully the tectonically active terrains within the country, in order to adequately forecast, prescribe mitigation measures and in order to avoid a major disaster. This report provides new evidence of a slow slip transient in a strongly locked seismogenic zone of the Okemesi fold belt. The aim of this research is to investigate the different methods of earth tremor monitoring using fault slip analysis and mapping of Okemesi hills, which has been the most recent epicenter to most of the recent tremors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=earth%20tremor" title="earth tremor">earth tremor</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20slip" title=" fault slip"> fault slip</a>, <a href="https://publications.waset.org/abstracts/search?q=intraplate%20activities" title=" intraplate activities"> intraplate activities</a>, <a href="https://publications.waset.org/abstracts/search?q=plate%20tectonics" title=" plate tectonics "> plate tectonics </a> </p> <a href="https://publications.waset.org/abstracts/124110/earth-tremors-in-nigeria-a-precursor-to-major-disaster" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124110.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">154</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2553</span> Stagnation Point Flow Over a Stretching Cylinder with Variable Thermal Conductivity and Slip Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Y.%20Malik">M. Y. Malik</a>, <a href="https://publications.waset.org/abstracts/search?q=Farzana%20Khan"> Farzana Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this article, we discuss the behavior of viscous fluid near stagnation point over a stretching cylinder with variable thermal conductivity. The effects of slip conditions are also encountered. Thermal conductivity is considered as a linear function of temperature. By using homotopy analysis method and Fehlberg method we compare the graphical results for both momentum and energy equations. The effect of different parameters on velocity and temperature fields are shown graphically. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=slip%20conditions" title="slip conditions">slip conditions</a>, <a href="https://publications.waset.org/abstracts/search?q=stretching%20cylinder" title=" stretching cylinder"> stretching cylinder</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20generation%2Fabsorption" title=" heat generation/absorption"> heat generation/absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=stagnation%20point%20flow" title=" stagnation point flow"> stagnation point flow</a>, <a href="https://publications.waset.org/abstracts/search?q=variable%20thermal%20conductivity" title=" variable thermal conductivity"> variable thermal conductivity</a> </p> <a href="https://publications.waset.org/abstracts/5197/stagnation-point-flow-over-a-stretching-cylinder-with-variable-thermal-conductivity-and-slip-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5197.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">423</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2552</span> Finite Element Analysis of Steel-Concrete Composite Structures Considering Bond-Slip Effect</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=WonHo%20Lee">WonHo Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyo-Gyoung%20Kwak"> Hyo-Gyoung Kwak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A numerical model considering slip behavior of steel-concrete composite structure is introduced. This model is based on a linear bond stress-slip relation along the interface. Single node was considered at the interface of steel and concrete member in finite element analysis, and it improves analytical problems of model that takes double nodes at the interface by adopting spring elements to simulate the partial interaction. The slip behavior is simulated by modifying material properties of steel element contacting concrete according to the derived formulation. Decreased elastic modulus simulates the slip occurrence at the interface and decreased yield strength simulates drop in load capacity of the structure. The model is verified by comparing numerical analysis applying this model with experimental studies. Acknowledgment—This research was supported by a grant(13SCIPA01) from Smart Civil Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport(MOLIT) of Korea government and Korea Agency for Infrastructure Technology Advancement(KAIA) and financially supported by Korea Ministry of Land, Infrastructure and Transport(MOLIT) as U-City Master and Doctor Course Grant Program. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bond-slip" title="bond-slip">bond-slip</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20structure" title=" composite structure"> composite structure</a>, <a href="https://publications.waset.org/abstracts/search?q=partial%20interaction" title=" partial interaction"> partial interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=steel-concrete%20structure" title=" steel-concrete structure"> steel-concrete structure</a> </p> <a href="https://publications.waset.org/abstracts/78228/finite-element-analysis-of-steel-concrete-composite-structures-considering-bond-slip-effect" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78228.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">178</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2551</span> Physics-Based Earthquake Source Models for Seismic Engineering: Analysis and Validation for Dip-Slip Faults </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Percy%20Galvez">Percy Galvez</a>, <a href="https://publications.waset.org/abstracts/search?q=Anatoly%20Petukhin"> Anatoly Petukhin</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20Somerville"> Paul Somerville</a>, <a href="https://publications.waset.org/abstracts/search?q=Ken%20Miyakoshi"> Ken Miyakoshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kojiro%20Irikura"> Kojiro Irikura</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Peter"> Daniel Peter</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Physics-based dynamic rupture modelling is necessary for estimating parameters such as rupture velocity and slip rate function that are important for ground motion simulation, but poorly resolved by observations, e.g. by seismic source inversion. In order to generate a large number of physically self-consistent rupture models, whose rupture process is consistent with the spatio-temporal heterogeneity of past earthquakes, we use multicycle simulations under the heterogeneous rate-and-state (RS) friction law for a 45deg dip-slip fault. We performed a parametrization study by fully dynamic rupture modeling, and then, a set of spontaneous source models was generated in a large magnitude range (Mw > 7.0). In order to validate rupture models, we compare the source scaling relations vs. seismic moment Mo for the modeled rupture area S, as well as average slip Dave and the slip asperity area Sa, with similar scaling relations from the source inversions. Ground motions were also computed from our models. Their peak ground velocities (PGV) agree well with the GMPE values. We obtained good agreement of the permanent surface offset values with empirical relations. From the heterogeneous rupture models, we analyzed parameters, which are critical for ground motion simulations, i.e. distributions of slip, slip rate, rupture initiation points, rupture velocities, and source time functions. We studied cross-correlations between them and with the friction weakening distance Dc value, the only initial heterogeneity parameter in our modeling. The main findings are: (1) high slip-rate areas coincide with or are located on an outer edge of the large slip areas, (2) ruptures have a tendency to initiate in small Dc areas, and (3) high slip-rate areas correlate with areas of small Dc, large rupture velocity and short rise-time. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=earthquake%20dynamics" title="earthquake dynamics">earthquake dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=strong%20ground%20motion%20prediction" title=" strong ground motion prediction"> strong ground motion prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=seismic%20engineering" title=" seismic engineering"> seismic engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=source%20characterization" title=" source characterization"> source characterization</a> </p> <a href="https://publications.waset.org/abstracts/127500/physics-based-earthquake-source-models-for-seismic-engineering-analysis-and-validation-for-dip-slip-faults" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127500.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2550</span> Bond-Slip Response of Reinforcing Bars Embedded in High Performance Fiber Reinforced Cement Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lee%20Siong%20Wee">Lee Siong Wee</a>, <a href="https://publications.waset.org/abstracts/search?q=Tan%20Kang%20Hai"> Tan Kang Hai</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20En-Hua"> Yang En-Hua</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the results of an experimental study undertaken to evaluate the local bond stress-slip response of short embedment of reinforcing bars in normal concrete (NC) and high performance fiber reinforced cement composites (HPFRCC) blocks. Long embedment was investigated as well to gain insights on the distribution of strain, slip, bar stress and bond stress along the bar especially in post-yield range. A total of 12 specimens were tested, by means of pull-out of the reinforcing bars from concrete blocks. It was found that the enhancement of local bond strength can be reached up to 50% and ductility of the bond behavior was improved significantly if HPFRCC is used. Also, under a constant strain at loaded end, HPFRCC has delayed yielding of bars at other location from the loaded end. Hence, the reduction of bond stress was slower for HPFRCC in comparison with NC. Due to the same reason, the total slips at loaded end for HPFRCC was smaller than NC as expected. Test results indicated that HPFRCC has better bond slip behavior which makes it a suitable material to be employed in anchorage zone such as beam-column joints. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bond%20stress" title="bond stress">bond stress</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20performance%20fiber%20reinforced%20cement%20composites" title=" high performance fiber reinforced cement composites"> high performance fiber reinforced cement composites</a>, <a href="https://publications.waset.org/abstracts/search?q=slip" title=" slip"> slip</a>, <a href="https://publications.waset.org/abstracts/search?q=strain" title=" strain"> strain</a> </p> <a href="https://publications.waset.org/abstracts/29290/bond-slip-response-of-reinforcing-bars-embedded-in-high-performance-fiber-reinforced-cement-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29290.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">495</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2549</span> Cracking Mode and Path in Duplex Stainless Steels Failure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Faraj%20A.%20E.%20Alhegagi">Faraj A. E. Alhegagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Bassam%20F.%20A.%20Alhajaji"> Bassam F. A. Alhajaji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ductile and brittle fractures are the two main modes for the failure of engineering components. Fractures are classified with respect to several characteristics, such as strain to fracture, ductile or brittle crystallographic mode, shear or cleavage, and the appearance of fracture, granular or transgranular. Cleavage is a brittle fracture involves transcrystalline fracture along specific crystallographic planes and in certain directions. Fracture of duplex stainless steels takes place transgranularly by cleavage of the ferrite phase. On the other hand, ductile fracture occurs after considerable plastic deformation prior to failure and takes place by void nucleation, growth, and coalescence to provide an easy fracture path. Twinning causes depassivation more readily than slip and appears at stress lower than the theoretical yield stress. Consequently, damage due to twinning can occur well before that due to slip. Stainless steels are clean materials with the low efficiency of second particles phases on the fracture mechanism. The ferrite cleavage and austenite tear off are the main mode by which duplex stainless steels fails. In this study, the cracking mode and path of specimens of duplex stainless steels were investigated. Zeron 100 specimens were heat treated to different times cooled down and pulled to failure. The fracture surface was investigated by scanning electron microscopy (SEM) concentrating on the cracking mechanism, path, and origin. Cracking mechanisms were studied for those grains either as ferrite or austenite grains identified according to fracture surface features. Cracks propagated through the ferrite and the austenite two phases were investigated. Cracks arrested at the grain boundary were studied as well. For specimens aged for 100h, the ferrite phase was noted to crack by cleavage along well-defined planes while austenite ridges were clearly observed within the ferrite grains. Some grains were observed to fail with topographic features that were not clearly identifiable as ferrite cleavage or austenite tearing. Transgranular cracking was observed taking place in the ferrite phase on well-defined planes. No intergranular cracks were observed for the tested material. The austenite phase was observed to serve as a crack bridge and crack arrester. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=austenite%20ductile%20tear%20off" title="austenite ductile tear off">austenite ductile tear off</a>, <a href="https://publications.waset.org/abstracts/search?q=cracking%20mode" title=" cracking mode"> cracking mode</a>, <a href="https://publications.waset.org/abstracts/search?q=ferrite%20cleavage" title=" ferrite cleavage"> ferrite cleavage</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steels%20failure" title=" stainless steels failure"> stainless steels failure</a> </p> <a href="https://publications.waset.org/abstracts/99349/cracking-mode-and-path-in-duplex-stainless-steels-failure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/99349.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2548</span> Effects of Dispersion on Peristaltic Flow of a Micropolar Fluid Through a Porous Medium with Wall Effects in the Presence of Slip</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Ravi%20Kiran">G. Ravi Kiran</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Radhakrishnamacharya"> G. Radhakrishnamacharya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the effects of slip boundary condition and wall properties on the dispersion of a solute matter in peristaltic flow of an incompressible micropolar fluid through a porous medium. Long wavelength approximation, Taylor's limiting condition and dynamic boundary conditions at the flexible walls are used to obtain the average effective dispersion coefficient in the presence of combined homogeneous and heterogeneous chemical reactions. The effects of various pertinent parameters on the effective dispersion coefficient are discussed. It is observed that peristalsis enhances dispersion. It also increases with micropolar parameter, cross viscosity coefficient, Darcy number, slip parameter and wall parameters. Further, dispersion decreases with homogenous chemical reaction rate and heterogeneous chemical reaction rate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chemical%20reaction" title="chemical reaction">chemical reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=dispersion" title=" dispersion"> dispersion</a>, <a href="https://publications.waset.org/abstracts/search?q=peristalsis" title=" peristalsis"> peristalsis</a>, <a href="https://publications.waset.org/abstracts/search?q=slip%20condition" title=" slip condition"> slip condition</a>, <a href="https://publications.waset.org/abstracts/search?q=wall%20properties" title=" wall properties"> wall properties</a> </p> <a href="https://publications.waset.org/abstracts/24925/effects-of-dispersion-on-peristaltic-flow-of-a-micropolar-fluid-through-a-porous-medium-with-wall-effects-in-the-presence-of-slip" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24925.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">466</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2547</span> Numerical Solutions of Boundary Layer Flow over an Exponentially Stretching/Shrinking Sheet with Generalized Slip Velocity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roslinda%20Nazar">Roslinda Nazar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezad%20Hafidz%20Hafidzuddin"> Ezad Hafidz Hafidzuddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Norihan%20M.%20Arifin"> Norihan M. Arifin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioan%20Pop"> Ioan Pop</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the problem of steady laminar boundary layer flow and heat transfer over a permeable exponentially stretching/shrinking sheet with generalized slip velocity is considered. The similarity transformations are used to transform the governing nonlinear partial differential equations to a system of nonlinear ordinary differential equations. The transformed equations are then solved numerically using the bvp4c function in MATLAB. Dual solutions are found for a certain range of the suction and stretching/shrinking parameters. The effects of the suction parameter, stretching/shrinking parameter, velocity slip parameter, critical shear rate, and Prandtl number on the skin friction and heat transfer coefficients as well as the velocity and temperature profiles are presented and discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boundary%20layer" title="boundary layer">boundary layer</a>, <a href="https://publications.waset.org/abstracts/search?q=exponentially%20stretching%2Fshrinking%20sheet" title=" exponentially stretching/shrinking sheet"> exponentially stretching/shrinking sheet</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20slip" title=" generalized slip"> generalized slip</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20solutions" title=" numerical solutions"> numerical solutions</a> </p> <a href="https://publications.waset.org/abstracts/28361/numerical-solutions-of-boundary-layer-flow-over-an-exponentially-stretchingshrinking-sheet-with-generalized-slip-velocity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28361.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">432</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=slip%20failure&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=slip%20failure&page=3">3</a></li> <li class="page-item"><a class="page-link" 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