{"title":"Development of Prediction Tool for Sound Absorption and Sound Insulation for Sound Proof Properties","authors":"Yoshio Kurosawa, Takao Yamaguchi","volume":105,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":1613,"pagesEnd":1618,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10002242","abstract":"High frequency automotive interior noise above 500\r\nHz considerably affects automotive passenger comfort. To reduce this\r\nnoise, sound insulation material is often laminated on body panels or\r\ninterior trim panels. For a more effective noise reduction, the sound\r\nreduction properties of this laminated structure need to be estimated.\r\nWe have developed a new calculate tool that can roughly calculate the\r\nsound absorption and insulation properties of laminate structure and\r\nhandy for designers. In this report, the outline of this tool and an\r\nanalysis example applied to floor mat are introduced.","references":"[1] Ohta M., et al, A Unified Theory of Sound Transmission Loss of General\r\nDouble Walls and its Practical Application to the Double Wall with\r\nSound Absorbent Material in the Cavity, The Acoustical Society of Japan\r\nVol. 34 No.1, 1978, pp.3.\r\n[2] Ohta M., et al, A Unified Theory of Sound Transmission Loss of General\r\nDouble Walls and its Practical Application to the Double Wall with\r\nSound Absorbent Material in the Cavity, The Acoustical Society of Japan\r\nVol. 35 No.3, 1979, p.118.\r\n[3] Nishimura. K., et al, Experimental Acoustic Duct Analysis Based on\r\nTransfer Matrix Method: 1st Report, Transactions of the Japan Society of\r\nMechanical Engineers. C vol. 54 No. 504, 1987, pp.1740.\r\n[4] Shiraki K., et al, Noise Prevention Design and Simulation, O-You-Gijutu\r\nShuppan, 1987.\r\n[5] Utsuno H., et al, Transfer Function Method for Measuring Characteristic\r\nImpedance and Propagation Constant of Porous Material, J. Acoust. Soc.\r\nAm. vol. 86 No.2, 1989, pp. 637.\r\n[6] Yamaguchi T., Society of Damping Technology, Technology Exchange\r\nForum, 1999, pp. 91-94.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 105, 2015"}