In this research, the neutron diffraction technique was used to investigate and compare the residual stress characteristics in several weld arrangements. This research has focused on the effects on residual stress of restraint condition applied during welding, the start and end of the weld for a single bead, and increasing the number of passes. The measured residual stress distributions are normalized by the yield strength of the material and compared with distribution provided in fitness-for-purpose procedures. It is found that the current safety assessment procedure BS 7910 and R6 Level 1 significantly conservative for longitudinal stresses outside the weld and heat affected zone, and for transverse residual stress across the weldment for surface measurements. For a less conservative assessment, R6 Level 2 is recommended, however, even if this assessment is often conservative, in particular, for transverse residual stresses.
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e-mail: a.paradowska@rl.ac.uk
e-mail: john.price@eng.monash.edu.au
e-mail: raafat.ibrahim@eng.monash.edu.au
e-mail: trevor.finlayson@sci.monash.edu.au
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February 2008
Research Papers
Neutron Diffraction Evaluation of Residual Stress for Several Welding Arrangements and Comparison With Fitness-for-Purpose Assessments
Anna M. Pardowska, M.Sc.,
Anna M. Pardowska, M.Sc.
Ph.D. Student
Department of Mechanical Engineering,
e-mail: a.paradowska@rl.ac.uk
Monash University
, Clayton, Victoria 3800, Australia
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John W. H. Price,
John W. H. Price
Professor
Department of Mechanical Engineering,
e-mail: john.price@eng.monash.edu.au
Monash University
, Clayton, Victoria 3800, Australia
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Raafat Ibrahim,
Raafat Ibrahim
Associate Professor
Department of Mechanical Engineering,
e-mail: raafat.ibrahim@eng.monash.edu.au
Monash University
, Clayton, Victoria 3800, Australia
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Trevor R. Finlayson
Trevor R. Finlayson
Associate Professor
School of Physics,
e-mail: trevor.finlayson@sci.monash.edu.au
Monash University
, Clayton, Victoria 3800, Australia
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Anna M. Pardowska, M.Sc.
Ph.D. Student
Department of Mechanical Engineering,
Monash University
, Clayton, Victoria 3800, Australiae-mail: a.paradowska@rl.ac.uk
John W. H. Price
Professor
Department of Mechanical Engineering,
Monash University
, Clayton, Victoria 3800, Australiae-mail: john.price@eng.monash.edu.au
Raafat Ibrahim
Associate Professor
Department of Mechanical Engineering,
Monash University
, Clayton, Victoria 3800, Australiae-mail: raafat.ibrahim@eng.monash.edu.au
Trevor R. Finlayson
Associate Professor
School of Physics,
Monash University
, Clayton, Victoria 3800, Australiae-mail: trevor.finlayson@sci.monash.edu.au
J. Pressure Vessel Technol. Feb 2008, 130(1): 011501 (7 pages)
Published Online: January 23, 2008
Article history
Received:
April 8, 2006
Revised:
October 25, 2006
Published:
January 23, 2008
Citation
Pardowska, A. M., Price, J. W. H., Ibrahim, R., and Finlayson, T. R. (January 23, 2008). "Neutron Diffraction Evaluation of Residual Stress for Several Welding Arrangements and Comparison With Fitness-for-Purpose Assessments." ASME. J. Pressure Vessel Technol. February 2008; 130(1): 011501. https://doi.org/10.1115/1.2826449
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