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Proceedings Paper

Measurement Of Displacements For A Cracked Body Using Moire And Photo-Interference Methods
Author(s): Hiroshi Miyamoto; Yasutoshi Shirota; Masanori Kikuchi
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Paper Abstract

In the present work, a new method is proposed to measure the displacements in a body by using moire and photo-interference methods. This method is applied to three dimensional crack problems to obtain the state of the deformation near the crack front. Firstly, this method is applied to two dimensional crack problems to examine the accuracy of this method. Correction factors of stress intensity factors are measured and compared with theory. Good agreements are obtained. Secondly, this method is applied to a through crack problem in a thick plate. Three components of displacements are measured and their variation along the plate thickness direction are examined. The effects of the plate thickness on the singularity of crack tips are discussed.

Paper Details

Date Published: 27 July 1979
PDF: 4 pages
Proc. SPIE 0189, 13th Intl Congress on High Speed Photography and Photonics, (27 July 1979); doi: 10.1117/12.957573
Show Author Affiliations
Hiroshi Miyamoto, Science University of Tokyo (Japan)
Yasutoshi Shirota, Sagami Institute of Technolgy (Japan)
Masanori Kikuchi, Science University of Tokyo (Japan)


Published in SPIE Proceedings Vol. 0189:
13th Intl Congress on High Speed Photography and Photonics
Shin-Ichi Hyodo, Editor(s)

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