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TECHNICAL PAPERS

Creep Relaxation of Residual Stresses Around Cold Expanded Holes

[+] Author and Article Information
A. A. Garcia-Granada, V. D. Lacarac, D. J. Smith, M. J. Pavier

Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom

P. Holdway

Defence and Evaluation Research Agency, Farnborough, United Kingdom

J. Eng. Mater. Technol 123(1), 125-131 (Jun 02, 2000) (7 pages) doi:10.1115/1.1310305 History: Received January 14, 2000; Revised June 02, 2000
Copyright © 2001 by ASME
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References

Figures

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Cyclic stress-strain behavior for Al 2650 aluminum alloy at room temperature compared with the model behavior used in the finite element analysis
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Creep strain accumulation tests with constant load for Al 2650 aluminum alloy at 150°C compared to the power law model used in the finite element analysis
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Diagram of test specimen for application of applied load showing location of thermocouples (T1 and T2) and location of strain gauges (SG1 to SG6)
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Axisymmetric finite element model used for the analysis of cold expansion and creep relaxation
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Residual tangential stress after cold expansion measured on the entrance and exit faces using X-ray diffraction compared with surface finite element results
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Residual tangential stress after cold expansion measured through the thickness of the specimen using the Garcia-Sachs method compared with averaged finite element results
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Residual tangential stress after cold expansion followed by creep relaxation measured on the entrance and exit faces using X-ray diffraction compared with surface finite element results
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Residual tangential stress after cold expansion followed by creep relaxation measured through the thickness of the specimen using the Garcia-Sachs method compared with averaged finite element results
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Residual tangential stress after cold expansion followed by creep relaxation with applied mechanical load measured on the entrance and exit faces using X-ray diffraction compared with surface finite element results
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Residual tangential stress after cold expansion followed by creep relaxation with applied mechanical load measured through the thickness of the specimen using the Garcia-Sachs method compared with averaged finite element results
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Comparison of residual tangential stresses after cold expansion, after cold expansion followed by creep relaxation and after cold expansion followed by creep relaxation with applied mechanical load measured using the Garcia-Sachs method

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