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The influence of multiaxial stress states, stress gradients and elastic anisotropy on the evaluation of (Residual) stresses by X‐rays
Author(s) -
Dölle H.
Publication year - 1979
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889879013169
Subject(s) - anisotropy , residual stress , materials science , stress (linguistics) , nonlinear system , critical resolved shear stress , shear stress , shear (geology) , composite material , optics , physics , rheology , shear rate , linguistics , philosophy , quantum mechanics
In recent years, nonlinear d versus sin 2 ψ distributions have been observed in stressed materials which cannot be explained by the classical fundamentals of X‐ray stress measurement, d is the interplanar spacing measured and ψ is the angle between the surface normal of the sample and the measuring direction. This paper reviews treatments for these nonlinear distributions, including stress gradients, shear stresses and anisotropic X‐ray elastic constants. Methods for the evaluation of stresses are reported, and recommendations are given for the practical application of X‐ray stress measurement.