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Measurement of Micro Area of Polymer Materials (2nd Report, Relation of Density Ratio and Velocity of Wave Propagating on Boundary between Solid and Liquid)

Y. Nishimura, Y. Konomura, and K. Nakayama
[Nippon Kikaigakkai Ronbunshu (A), Vol.63, No.611, p.7, 1997]

By using the X-Z mode operation of a Scanning acoustic microscope (SAM), the velocity of waves propagating on a specimen can be determined. The waves propagating between solid and liquid are influenced by the density ratio of the solid and liquid. In order to understand the meaning of the measured results obtained using SAM, theoretical analysis of wave propagation was carried out considering the weight density and acoustic velocity of water. The relations of density ratio and velocity of waves propagating on the boundary between a solid and liquid were obtained.

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