压缩对汽车毡声学各向异性影响的参数化研究

Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-04-01 DOI:10.1016/S1620-7742(01)01322-8

Bernard Castagnède , Alexei Moussatov , Viggo Tarnow

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引用次数: 5

摘要

本说明描述以1至4不等的比率n压缩毛毡材料声学特性各向异性方面的工作。最近的一篇论文[1]表明，这种压缩引起了一些各向异性，虽然很小，但仍然很重要，在弯曲度空间分布的椭圆形状上清晰可见，在布鲁斯特角位移上也清晰可见，这是可预测的。对反射系数随入射角的变化进行了细致的实验研究。

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Parametric study of the influence of compression on the acoustical anisotropy of automotive felts

The present note describes work related to anisotropy of acoustical properties of felt materials being compressed with a rate $n$ varying from 1 to 4. Following a recent note [1], it is shown that such compression induces some anisotropy, which is small but still significant, clearly visible on the elliptical shape of the tortuosity spatial distribution, and also on the Brewster angle shifts, which are predictible. Some fine experimental studies of the reflection coefficient versus the angle of incidence have been performed and discussed.

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Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics

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