Conclusions
The above method is simple to apply, precise, and provides stable results with careful handling. It can be recommended for evaluating residual stresses in upper layers of large details, if the cutting out of a sample from such details is permissible. If it is necessary to determine the stress distribution curve in depth, several samples should be prepared and measured.
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Literature cited
S. O. Tsobkallo and D. M. Vasil'ev, Zavodskaya laboratoriya, No. 2 (1949).
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Zherebkin, O.A. Measurement of deformations on microscope UIM-21 for evaluating residual stresses in surface layers of components. Meas Tech 6, 203–204 (1963). https://doi.org/10.1007/BF01409253
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DOI: https://doi.org/10.1007/BF01409253