Theory of Photoacoustic Measurements of the Thermal Diffusivity of Two-Layer Samples : Techniques, Instrumentations and Measurement

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概要

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• The theory of photoacoustic measurements of thermal diffusivity making use of rear-surface illumination has been extended to include the effect of two-layer samples. It has been found that the ratio of the thermal thickness of each layer becomes important in measuring the phase shift of photoacoustic signals. When the thermal thickness of one layer is thicker than another layer, only the thermal diffusivity of the thermally thicker layer could be obtained. On the other hand, when the thermal thickness of both layers are the same order, the combined thermal diffusivity of the two-layer system is obtained.

• 社団法人応用物理学会の論文
• 1988-12-20

著者

• Tanaka T

  Graduate School Of Engineering Tokyo Metropolitan University

• TOMINAGA Tetso

  Japan Synthetic Rubber Co., Ltd.,

• ITO Kenichi

  Tokyo Research Laboratory

関連論文

• Theory of Photoacoustic Measurements of the Thermal Diffusivity of Two-Layer Samples : Techniques, Instrumentations and Measurement

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