Measurement Of Displacements For A Cracked Body Using Moire And Photo-Interference Methods

Hiroshi Miyamoto; Yasutoshi Shirota; Masanori Kikuchi

doi:10.1117/12.957573

27 July 1979 Measurement Of Displacements For A Cracked Body Using Moire And Photo-Interference Methods

Hiroshi Miyamoto, Yasutoshi Shirota, Masanori Kikuchi

Proceedings Volume 0189, 13th Intl Congress on High Speed Photography and Photonics; (1979) https://doi.org/10.1117/12.957573
Event: 13th International Congress on High Speed Photography and Photonics, 1978, Tokyo, Japan

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.

Citation Download Citation

Hiroshi Miyamoto, Yasutoshi Shirota, and Masanori Kikuchi "Measurement Of Displacements For A Cracked Body Using Moire And Photo-Interference Methods", Proc. SPIE 0189, 13th Intl Congress on High Speed Photography and Photonics, (27 July 1979); https://doi.org/10.1117/12.957573

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