TY - GEN
T1 - Influence of drilling parameters on the accuracy of hole-drilling residual stress measurements
AU - Upshaw, D.
AU - Steinzig, M.
AU - Rasty, J.
PY - 2011
Y1 - 2011
N2 - 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 (ESPl). 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.
AB - 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 (ESPl). 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.
UR - http://www.scopus.com/inward/record.url?scp=84860181789&partnerID=8YFLogxK
U2 - 10.1007/978-1-4614-0225-1_12
DO - 10.1007/978-1-4614-0225-1_12
M3 - Conference contribution
AN - SCOPUS:84860181789
SN - 9781461402244
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 95
EP - 109
BT - Engineering Applications of Residual Stress - Proceedings of the 2011 Annual Conference on Experimental and Applied Mechanics
PB - Springer New York LLC
T2 - 2011 SEM Annual Conference on Experimental and Applied Mechanics
Y2 - 13 June 2011 through 16 June 2011
ER -