Full-field calculation of hole drilling residual stresses from electronic speckle pattern interferometry data |
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| Authors: | G S Schajer M Steinzig |
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| Institution: | (1) Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada;(2) Hyec Inc., 110 Eastgate Drive, Los Alamos, New Mexico, USA;(3) Present address: Los Alamos National Laboratory, Los Alamos, New Mexico, USA |
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| 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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| Keywords: | Residual stress hole drilling ESPI laser holography inverse solution |
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