10411 フェルトとフィルムとウレタンを積層したパネルの遮音性能解析

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タイトル別名
  • 10411 Transmission Loss for Panel Laminated with Felt, Film and Urethane Foam

抄録

To reduce the interior noise of the cars in high frequency region, the sound proof materials are laminated with the body panels and the interior trims. Therefore, the sound proof properties of the laminates play an important role for the efficient acoustical design. A program code which predict both sound absorption properties and sound insulation properties of the laminates are developed. This program code is used for transfer matrix method by Biot theory for Allard. This report described the outline of this program code, and the calculation results almost agreed with the experimental results.

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