A new experimental method utilizing the Interferometric Strain/Slope Rosette (ISSR) and incremental hole-drilling is applied to measure in-plane residual stresses which vary with depth. For each depth increment, the ISSR measures three relieved strain components and two relieved slopes at point near the hole edge. Adapting the classical Integral Method to the ISSR, and incorporating a Tikhonov regularization scheme, stabilized residual stress solutions are back-calculated from the measured deformations. This paper describes the measurement principle of the ISSR, the derivation and numerical calculation of the ISSR hole-drilling coefficients, and the methodology used to back-calculate and regularize the residual stress solution. A verification test on a thin-plate with a through-hole, and residual stress measurements performed on a shot-peened Titanium-alloy block, are presented and discussed.
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e-mail: ttjhung@oakland.edu
e-mail: kli@oakland.edu
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April 2003
Technical Papers
Measurement of In-Plane Residual Stresses Varying With Depth by the Interferometric Strain/Slope Rosette and Incremental Hole-Drilling
Tana Tjhung, Ph.D. Student,
e-mail: ttjhung@oakland.edu
Tana Tjhung, Ph.D. Student
Department of Mechanical Engineering, Oakland University, Rochester, MI 48309
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Keyu Li, Assoc. Prof.
e-mail: kli@oakland.edu
Keyu Li, Assoc. Prof.
Department of Mechanical Engineering, Oakland University, Rochester, MI 48309
Search for other works by this author on:
Tana Tjhung, Ph.D. Student
Department of Mechanical Engineering, Oakland University, Rochester, MI 48309
e-mail: ttjhung@oakland.edu
Keyu Li, Assoc. Prof.
Department of Mechanical Engineering, Oakland University, Rochester, MI 48309
e-mail: kli@oakland.edu
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division June 25, 2002; revision received December 2, 2002. Associate Editor: S. Mall.
J. Eng. Mater. Technol. Apr 2003, 125(2): 153-162 (10 pages)
Published Online: April 4, 2003
Article history
Received:
June 25, 2002
Revised:
December 2, 2002
Online:
April 4, 2003
Citation
Tjhung, T., and Li, K. (April 4, 2003). "Measurement of In-Plane Residual Stresses Varying With Depth by the Interferometric Strain/Slope Rosette and Incremental Hole-Drilling ." ASME. J. Eng. Mater. Technol. April 2003; 125(2): 153–162. https://doi.org/10.1115/1.1555654
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