HIGHLIGHTS
SUMMARY
Consequently, all residual stress measurement methods must explicitly include some method for establishing a zero-stress datum. Conversely, non-destructive methods often require cutting the sample to gain sufficient access to the location of interest, or to collect reference samples to establish the zero-stress datum. In the relaxation type of residual stress measurements, some stressed material within the specimen is cut away so as to expose a new stress-free surface that acts as the zero-stress datum of the measurements. The deformation responses from the resulting local redistribution of the residual stresses . . .
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