Depth Profile of Filler Volume Fraction in Graded Aluminum–Epoxy Composites Using Photoacoustic Method
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概要
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A photoacoustic signal in graded aluminum–epoxy composites was measured with varying chopping frequency to evaluate the change in aluminum volume fraction with depth. The decrease in the normalized photoacoustic signal with decreasing chopping frequency in graded aluminum–epoxy composites was attributed to the increase in the average thermal effusivity due to the increase in aluminum concentration with depth. The quantitative aluminum volume fraction was estimated from the variation of the photoacoustic signal using Rosencwaig–Gersho (R–G) theory combined with the Maxwell–Garnet effective-medium theory. The aluminum volume fraction was estimated to be in agreement with quantitative image analysis within 3%, which justifies the use of the photoacoustic method in determining the filler volume fraction and the depth profile in graded two-phase composites.
- 2006-09-15
著者
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Kim Ho
Department Of Biostatistics And Epidemiology School Of Public Health & Institute Of Health And E
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Jang Moon
Department Of Internal Medicine School Of Medicine Cha University
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Jang Moon
Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Gusong-dong, Yusong-gu, Taejon 305-701, Korea
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Ahn Terry
Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Gusong-dong, Yusong-gu, Taejon 305-701, Korea
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So Cheal
Department of Photonics, Dongshin University, 252 Daeho-dong, Naju 520-714, Korea
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