Welding Residual Stresses and Effects on Fracture in Pressure Vessel and Piping Components: A Millennium Review and Beyond

[+] Author and Article Information
P. Dong, F. W. Brust

Center for Welded Structures Research, Battelle, 505 King Avenue, Room 11-4-122, Columbus, OH 43201

J. Pressure Vessel Technol 122(3), 329-338 (Apr 10, 2000) (10 pages) doi:10.1115/1.556189 History: Received February 01, 2000; Revised April 10, 2000
Copyright © 2000 by ASME
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Residual stress and distortion evolution in welded joints
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Graphic solutions for thermoplastic stress-strain evolution 1-D problem
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Basic elements of unified weld constitutive model
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A combined 3-D, shell element and 2-D cross-sectional model for residual stress analysis of a multi-pass girth weld—(a) axisymmetric model; (b) weld area; (c) 3-D shell element model
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Axisymmetric residual stress modeling results—(a) axial residual stress, outer surface; (b) axial residual stress, inner surface; (c) hoop residual stress, outer surface; (d) hoop residual stress, inner
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Predicted residual stress distributions on the outer surface—(a) axial residual stress; (b) hoop residual stress
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Special shell element model for simulating multi-pass repair weld—(a) typical multi-pass weld; (b) shell element representation; (c) temperature solution for an intermediate pass (1st repair pass); (d) predicted final transverse residual stress distribution on the outer surface
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Stress intensity factor solutions for a surface crack parallel to weld—(a) original weld only; (b) weld with a repair
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Crack-opening displacement for a through-wall crack—(a) internal pressure loading without weld residual stresses; (b) internal pressure with weld residual stresses
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Crack-opening displacement versus crack length (2c) due to weld residual stresses only—(a) 2c=150 mm, (b) 2c=3 mm, (c) 2c=500 mm
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Hoop residual stress re-distributions as a circumferential crack is introduced—(a) without crack; (b) with a crack (2c=250 mm)
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Two generalized through-thickness residual stress distributions in multi-pass weld in pipes and vessels—(a) “bending” type; (b) “self-equilibrating” type
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Transverse residual stress distribution on the outer surface after a weld repair in a large vessel
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Stress intensity factors for a through-wall crack orientation in a butt joint—(a) crack definition; (b) stress intensity factors for growing crack; (c) residual stress re-distributions versus crack length




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