Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2005.11b
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- Pages.118-121
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- 2005
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- 1598-2548(pISSN)
A Study on Estimation Method for Physical Properties of Sound Absorbing Materials
다공성 재료의 물리적 성질 추정 방법에 대한 연구
- Published : 2005.11.17
Abstract
The acoustical performance of porous materials is determined by their seven or more macroscopic physical properties. However, it is not easy to measure all these properties in many cases. Furthermore, the measurement is compels engineers to spend much times. The effect of each property on the normal incidence absorption coefficient and normalized surface impedance was studied to estimate the properties of porous materials by numerical method. According to the investigation, Properties of porous materials are divided into several groups and estimated by each group. This paper is focused on the estimation procedure of porous materials by the numerical method.
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