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RESEARCH PAPER

Stress Intensity Factors Due to Residual Stresses in T-Plate Welds

[+] Author and Article Information
Noel P. O’Dowd, Kamran M. Nikbin

Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom

Hyeong Y. Lee

Korea Atomic Energy Research Institute, Dukjindong 150 Yuseong, 305-606, South Korea

Robert C. Wimpory

JRC-European Commission Institute for Energy, Westerduinweg 3, 1755 LE, Petten, The Netherlands

Farid R. Biglari

Department of Mechanical Engineering, Amirkabir University of Technology, Hafez Avenue, Tehran, Iran

J. Pressure Vessel Technol 126(4), 432-437 (Dec 01, 2004) (6 pages) doi:10.1115/1.1804199 History: Received May 11, 2004; Revised July 30, 2004; Online December 01, 2004
Copyright © 2004 by ASME
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References

Wimpory,  R., May,  P., O’Dowd,  N., Webster,  G., Smith,  D., and Kingston,  E., 2003, “Measurement of Residual Stresses in T-Plate Weldments,” J. Strain Anal., 38(4), pp. 349–365.
ISO/TTA 3, 2001, Polycrystalline Materials—Determination of Residual Stresses by Neutron Diffraction, ISO, Geneva, Switzerland.
British Energy Generation Ltd, 2001, Assessment of the Integrity of Structures Containing Defects, R6 Rev. 4, British Energy Generation Ltd, UK.
British Standards Institution, 2000, Guide on Methods for Assessing the Acceptability of Flaws in Metallic Structures, BS 7910:1999 (Rev. March 2000), British Standards Institution, London, UK.
Leggatt, R., 1997, “Welding Residual Stresses,” in Proc. of the Fifth Int. Conf. On Residual Stress (ICRS-5), pp. 12–25.
May, P., 2002, “The Effect of Welding Residual Stresses on the Fracture Resistance of Ductile Steels,” Ph.D. thesis, University of London, London, UK.
Niu,  X., and Glinka,  G., 1987, “Weld Profile Effect on Stress Intensity Factors in Weldments,” Int. J. Fract., 35, pp. 3–20.
Lei,  Y., O’Dowd,  N., and Webster,  G., 2000, “Fracture Mechanics Analysis of a Crack in a Residual Stress Field,” Int. J. Fract., 106, pp. 195–216.
ABAQUS version 6.2, 2001, Hibbitt, Karlsson & Sorensen.
Webster, G., and Ainsworth, R., 1994, High Temperature Component Life Assessment, Chapman and Hall, London, UK.
Talie-Faz, B., Dover, W. D., and Brennan, F. P., 2000, “Static Strength of Cracked High Strength Steel Tubular Joints,” HSE Offshore Technology Report 2000-078, University College London.

Figures

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Normalized mode I K-values for T-plate with a uniform stress distribution
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Stress intensity factors for two measured stress distributions in a welded T-plate
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Comparison between stress intensity factors obtained from measured residual stress distribution and from four representative stress distributions
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Percentage difference between K-values obtained using the T-plate and that obtained using a smooth edge cracked plate for the R6 stress distribution
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Comparison of actual K-values for the SE702 T-plate with the representative distributions
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Geometry of SE702 T-plate weld. All dimensions in mm (not to scale).
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Residual stress distributions for T-plate welds: (a) high strength steel plate, SE702; and (b) medium strength steel plate, grade S355, of various size, W
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Measured transverse residual stresses in two 50 mm T-plates. Also included are approximate stress distributions for welded T-plate.
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Superposition method to determine stress intensity factors
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Finite element mesh used in stress intensity factor calculation

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