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Proceedings Paper

Low-temperature deformation measurement of materials by the use of laser speckle photography method
Author(s): Sumio Nakahara; Shigeyoshi Hisada; Takeyoshi Fujita; Kiyoshi Sugihara
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Paper Abstract

The laser speckle photography method is applied to study the deformation behavior of aluminum, stainless steel and high-purity alumina ceramics specimens during the cooling down process from the room to the liquid nitrogen temperatures. The in-plane displacements were measured by the image plane speckle photography and the out-of-plane displacements by the defocused speckle photography, respectively. The surface of ceramics specimen was coated with vacuum-evaporated aluminum film to keep the correlation of speckle patterns during the cooling down process. The experimental values of the in-plane displacement are compared with those of the FEM thermal analysis. The applicability of laser speckle photography method to cryogenic engineering is discussed.

Paper Details

Date Published: 1 December 1991
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Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49500
Show Author Affiliations
Sumio Nakahara, Kansai Univ. (Japan)
Shigeyoshi Hisada, Kansai Univ. (Japan)
Takeyoshi Fujita, Kansai Univ. (Japan)
Kiyoshi Sugihara, Kansai Univ. (Japan)


Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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