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Proceedings Paper

Development of new V(z) curve technique for soft materials
Author(s): Chiaki Miyasaka; Koichi Komaki; Bernhard R. Tittmann
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Paper Abstract

The present article reports a technique to characterize small portions in the order of a few micron of a soft anisotropic material. The heart muscle was selected for specimen as an example of the soft material. The heart muscle was cut by a microtome and coated on a substrate. The thickness of the specimen was substantially 3 micrometer. For the substrate, fused quartz was used because its elastic properties are known and stable. The spherical acoustic lens was used to determine the position for the measurement. Considering the anisotropy of the specimen, the cylindrical lens was used to measure velocities of the Rayleigh waves propagating within the specimen. The frequency of 400 MHz was used for both the visualization and the measurement. The generation of the Rayleigh waves in the above conditions was confirmed by numerical calculations based on the wave propagation theory for layered media. As a result, the variation of the velocities representing the anisotropy of elastic properties were obtained and found to be about 7%.

Paper Details

Date Published: 13 May 2000
PDF: 9 pages
Proc. SPIE 3993, Nondestructive Evaluation of Aging Materials and Composites IV, (13 May 2000); doi: 10.1117/12.385490
Show Author Affiliations
Chiaki Miyasaka, The Pennsylvania State Univ. (United States)
Koichi Komaki, Nihon Univ. (Japan)
Bernhard R. Tittmann, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 3993:
Nondestructive Evaluation of Aging Materials and Composites IV
George Y. Baaklini; Carol A. Nove; Eric S. Boltz, Editor(s)

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