Abstract
Hole drilling is a widely applied method for determining residual stresses. In numerous cases of practical interest, residual stresses vary significantly along the surface at a location to be drilled. Previous efforts to use strain gages to determine stresses in such cases are briefly reviewed. A computational approach is presented for determining two orthogonal stresses and their surface gradients at a location where stresses can be considered approximately uniform with depth of a drilled hole. The approach is designed for use with optical methods instead of strain gages. Optical interference fringe patterns obtained by holographic interferometry are shown for holes drilled into the side of a beam experiencing elastic bending stresses and associated gradient. Stresses and a gradient determined from fringe patterns are compared with expected values.
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© 2016 The Society for Experimental Mechanics, Inc.
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Makino, A., Nelson, D. (2016). Hole Drilling Determination of Residual Stresses Varying Along a Surface. In: Bossuyt, S., Schajer, G., Carpinteri, A. (eds) Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 9. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-21765-9_42
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DOI: https://doi.org/10.1007/978-3-319-21765-9_42
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-21764-2
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