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doi:10.3850/978-981-08-9247-0_rp081-icsas11
Residual Stress Distributions of High Strength Steel Plate-to-Plate T and Y Joint
J. Jiang, C. K. Lee and S. P. Chiew
Nanyang Technological University, Singapore
ABSTRACT
When comparing with mild steel, high strength steel (HSS) shows relatively poor ductility and therefore the residual stress engendered in the process of welding may have significant influence on the fatigue performance of HSS joints. In this study, an investigation of the residual stress distributions near the weld toe of a set of plate-to-plate T and Y joints made of HSS with yield stress equal 690MPa was carried out. The hole-drilling method was applied to measure the residual stress distribution near the weld toe of the joints. Special template and accessories were manufactured to ensure that precise drilling could be conducted at locations close to the weld toe. The characteristics of the residual stress distribution were discussed and their relationships with the joint geometry and the welding profile were summarized.
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