Abstract
A mathematical method is proposed for calculating residual stresses from hole drilling electronic speckle pattern interferometry (ESPI) data, independent of rigid-body motions. Even though the signal-to-noise ratio of typical ESPI data is modest, the method achieves good computational stability by averaging a large amount of data. It does this without excessive numerical effort by exploiting known trigonometric relationships among the data. The resulting stress calculations are very rapid, and are well suited for future application to non-uniform stress measurements.
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Schajer, G.S., Steinzig, M. Full-field calculation of hole drilling residual stresses from electronic speckle pattern interferometry data. Experimental Mechanics 45, 526–532 (2005). https://doi.org/10.1007/BF02427906
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DOI: https://doi.org/10.1007/BF02427906