Statistical Errors in X-Ray Triaxial Stress Analysis by Cos α Method

Author:

Ejiri Shoichi1,Ohba Hiroaki2,Sasaki Toshihiko3

Affiliation:

1. Iwate Medical University

2. Toyo Electric Mfg. Co., Ltd.

3. Kanazawa University

Abstract

Currently, the sin2ψ method is established as an effective technique as how to measure the residual stress state of metal materials non-destructively by X-ray diffraction. In recent years, new X-ray stress measurements with two-dimensional detector are developed and spreading in the world. There is the cosα method as one of the new techniques. However, the research about the statistical errors in the method continues. The measurement theory of the cos α method is reviewed on the triaxial stress state. The triaxial stress analysis by the method is examined and discussed from a viewpoint of the derived errors for the determination.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference11 articles.

1. JSMS, X-ray Stress Measurement Method, Yokendo, (1994).

2. I.C. Noyan and J.B. Cohen, Residual Stress: Measurement by Diffraction and Interpretation, Springer-Verlag, (1987).

3. K. Tanaka, K. Suzuki and Y. Akiniwa, Evaluation of Residual Stresses by X-Ray Diffraction, Yokendo, (2006).

4. S. Taira, K. Tanaka, T. Yamasaki, J. Soc. Mater. Sci., 27 (1977) 251-256.

5. T. Sasaki and Y. Hirose, J. Soc. Mater. Sci., 44 (1995) 1138-1143.

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