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다공성 재료의 물리적 성질의 흡음률에 대한 영향 및 물리적 성질추정
김윤재(Yoon Jae Kim),강연준(Yeon June Kang),김정수(Jung Soo Kim),맹주영(Joo Young Maeng),윤형준(Hyung June Youn) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2
The performance of acoustical materials is determined by their macroscopic physical parameters. However, these parameters are difficult to measure accurately, in some cases. The influence of each parameter on the normal incidence absorption coefficient and surface impedance was studied to estimate the properties of acoustical materials. This paper is focused on the procedure of properties estimation of porous materials by numerical method.