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RESEARCH PAPER

A Re-Autofrettage Procedure for Mitigation of Bauschinger Effect in Thick Cylinders

[+] Author and Article Information
Anthony P. Parker

Royal Military College of Science, Cranfield University, Swindon, SN6 8LA, England

J. Pressure Vessel Technol 126(4), 451-454 (Dec 01, 2004) (4 pages) doi:10.1115/1.1806446 History: Received June 14, 2004; Revised August 17, 2004; Online December 01, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic uniaxial stress-strain behavior showing strain hardening, reduced elastic modulus in compression and Bauschinger effect.
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Residual hoop stresses and percentage plastic strain for single, double, and triple autofrettage. A723 Steel, 0.1 percent yield strength 1069 MPa, 70 percent initial overstrain, radius ratio 2.0.
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Life improvement factor for double and triple autofrettage. A723 steel, 0.1 percent yield strength 1069 MPa, 70 percent initial overstrain, radius ratio 2.0.
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Residual hoop stresses and associated percentage plastic strain for single, double, and triple autofrettage. A723 steel, 0.1 percent yield strength 1069 MPa, 54 percent initial overstrain, radius ratio 2.74.
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Life improvement factor for double and triple autofrettage. A723 steel, 0.1 percent yield strength 1069 MPa, 54 percent initial overstrain, radius ratio 2.74.
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Residual hoop stresses for single, double, and triple autofrettage, HB7 steel, 0.01 percent yield strength 1159 MPa, 70 percent initial overstrain, radius ratio 2.0.

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