Abstract
The objective of this research is to define drill speeds that produce acceptable results when using the hole-drilling technique for measuring residual stress. For this study, three common engineering materials; alloy 6061-T651 aluminum, 304 stainless steel, and A36 carbon steel were used. This was achieved by performing ESPI/hole-drilling stress measurement of a known applied stress in discrete rpm intervals ranging from 2-40K rpm for each material. To produce a known state of stress specimens were bent elastically in a four-point bend fixture. Stress measurements were taken using single-axis electronic speckle-pattern interferometry (ESPI). It was found that for 6061-T6 aluminum, accurate and repeatable results can be achieved between speeds of 2-40K rpm. For 304 stainless steel, result accuracy diminishes when drill speeds go below 6K rpm. The A36 steel had a large as-received stress gradient across the longitudinal dimension and was therefore removed from this study.
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© 2011 The Society for Experimental Mechanics, Inc.
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Upshaw, D., Steinzig, M., Rasty, J. (2011). Influence of Drilling Parameters on the Accuracy of Hole-drilling Residual Stress Measurements. In: Proulx, T. (eds) Engineering Applications of Residual Stress, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0225-1_12
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DOI: https://doi.org/10.1007/978-1-4614-0225-1_12
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