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X-Ray Multiaxial Stress Analysis Taking Account of Stress Gradient

Published online by Cambridge University Press:  06 March 2019

Toshihiko Sasaki ,
Makoto Kuramoto  and
Yasuo Yoshioka
Toshihiko Sasaki
Affiliation:
The Institute of Vocational Training, 1960 Aihara, Sagamihara, Kanagawa 229, Japan
Makoto Kuramoto
Affiliation:
The Institute of Vocational Training, 1960 Aihara, Sagamihara, Kanagawa 229, Japan
Yasuo Yoshioka
Affiliation:
Musashi Institute of Technology, 1 Tamazutsumi, Setagaya, Tokyo 158, Japan
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Extract

Since the method of X-ray multiaxial stress analysis (ψ-splitting problem) was proposed by Dolle and Hauk, their method is often utilized for residual stress evaluation on a processed surface. However, as pointed out by thanselves, a theoretical problem still remains on the assumption of the stress state. Namely, the effect of ψ-splitting is impossible unless stress gradients with respect to the direction of the depth in σ13 or σ23 are present, because these components and σ33 have to vanish at the outer surface. Actually, we often find the 2θ vs. sin2ψ relations which do not agree with their theory. In this paper, we proposed a new method for X-ray multiaxial stress analysis in which the effect of stress gradient was considered. The basic equation of this method was solved by means of the integral method proposed by Lode and Peiter. The validity of the present method was proved through a numerical simulation and an experiment.

Type
II. X-Ray Strain and Stress Determination
Information
Advances in X-Ray Analysis , Volume 27: Thirty-Second Annual Conference on Applications of X-ray Analysis, August 1-5, 1983 , 1983 , pp. 121 - 128
Copyright
Copyright © International Centre for Diffraction Data 1983

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References

1. Dolle, H. and Hauk, V., Rontgenographische Spannungsermittlung fur Eigenspannungs systeme allgemeiner Orientierung, Harterei-Tech. Mitt., 31, 165:168 (1976).Google Scholar
2. Lode, W. and Peiter, A., Numeric rontgenographischer Eigenspannungsanalysen oberflachennaher Schiehten, Harterei-Tech. Mitt., 32, 235:240 (1977).Google Scholar