Residual stress characterization of a fabrication weld from the VICTORIA-Class submarine pressure hull : Revealing the unseen

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DOIResolve DOI: http://doi.org/10.1139/P10-076
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCanadian Journal of Physics
Volume88
IssueOctober 10
Pages759770; # of pages: 12
AbstractExplicit understanding of the residual-stress character of primary submarine pressure hull weldments will improve the fidelity of numerical analysis and experimentation supporting operational envelope and design life. A length of circumferential-seam closure weld was contained within a section of hull plate removed from the HMCS VICTORIA during the extended docking work period (EDWP) refit operations. This has provided a rare opportunity for detailed characterization of the as-received condition of this common weld-type from original vessel assembly. In collaboration with the Canadian Neutron Beam Centre of the National Research Council (NRC), a program was conducted to study this weld using neutron diffraction. Neutron diffraction is able to survey nondestructively through the section thickness, providing a three-dimensional characterization, while leaving the specimen intact for complementary study by other methods. Results indicate tensile stress peaks of up to 80% of the base-material yield stress. Understanding the three-dimensional behaviour of residual stress in this type of weld provides a valuable resource to the numerical modelling community. The results can also support fatigue and fracture experimental work and serve to confirm and improve the interpretation of the existing body of ‘‘surface-only’’ work conducted on similar welds.
Publication date
LanguageEnglish
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number16945677
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Record identifier7bf5740e-a84f-4bd1-b1a4-80d0e33741b2
Record created2011-03-03
Record modified2016-05-09
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