Study of welding residual stress by means of laser holography interference

Jiahua Yang

doi:10.1117/12.57485

1 December 1991 Study of welding residual stress by means of laser holography interference

Jiahua Yang

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.57485
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

According to the principle of laser holography interference, the relation between interference streaks and minute displacement of the point is analysed in this paper. And according to the principle of elastic mechanics, the relation between minute displacement and welding residual stress is deduced. A set of experimental optical lines is designed to obtain the holography interference pictures. The calculation of the welding residual stress is based on the pictures. And the result has shown that the law of distribution of the welding residual stress obtained through the experiments agrees with the theoretical analyses.

Citation Download Citation

Jiahua Yang "Study of welding residual stress by means of laser holography interference", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.57485

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