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Title: Measurement of residual stress in a welded branch connection and effects on fracture behaviour
Authors: Law, M
Luzin, V
Kirstein, O
Keywords: Residual stresses
Welded joints
Fracture properties
Neutron diffraction
Heat treatments
Issue Date: 16-Dec-2010
Publisher: Insitute of Physics
Citation: Law, M., Luzin, V., Kirstein, O. (2010). Measurement of residual stress in a welded branch connection and effects on fracture behaviour, Journal of Physics: Conference Series, International Conference on Neutron Scattering 2009, 3th–7th May 2009. Knoxville, Tennessee, USA, 251(1), 012045.
Abstract: The branch analysed in this paper was not post weld heat treated, resulting in significant residual stresses. Assessment codes assume these to be at, or close to, yield. An integrity assessment of a welded branch connection was carried out using these high assumed residual stresses. The weld then had residual stresses determined by neutron diffraction, performed using ANSTO's residual stress diffractometer, Kowari. The maximum measured residual stress (290 MPa or 60% of yield) was much lower than the yield value assumed by assessment codes. Reanalysing with the actual residual stresses almost doubled the critical crack size, increasing the safety of the connection. © 2010, Insitute of Physics.
Gov't Doc #: 3449
ISSN: 1742-6596
Appears in Collections:Conference Publications

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