✦ LIBER ✦

Dynamic Young's modulus and loss factor of floor covering materials

✍ Scribed by T. Pritz

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 702 KB
Volume: 49
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(96)00021-7

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✦ Synopsis

The dynamic Young's modulus and loss factor of typical floor covering materials (felt, cork, solid PVC and PVC foam) have been measured as functions of frequency and strain amplitude in the range of 10' to l@ Hz and 10-j to 10-2, respectively, in order to clear up the role of material behaviour in the improvement of impact sound isolation. It has been shown that the loss factor of the materials, with the exception of PVC foam, is relatively low (~0.1) and the frequency dependence of their dynamic modulus is slight. The loss factor of the PVC foam is large ( ~0.5) and the frequency dependence of the dynamic modulus is signt$cant enough to have an influence on the improvement of impact sound isolation. The cork and PVC foam exhibit moderate non-linearity in the strain range of investigation, but the felt and solid PVC have more marked non-linearity in elastic behaviour above strain amplitude of about 5 x 10W5, which may play a role in the impact sound isolation. Copyright 0 1996 Elsevier Science Ltd

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