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Spatially resolved materials property data from a uniaxial cross-weld tensile test

Turski, M.; Smith, M. C.; Bouchard, P. J.; Edwards, L. and Withers, P. J. (2009). Spatially resolved materials property data from a uniaxial cross-weld tensile test. Journal of Pressure Vessel Technology, 131(6) pp. 1–7.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1115/1.4000196
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Abstract

Application of electronic speckle pattern interferometry (ESPI) is described to measure the spatial variation in monotonic tensile stress-strain properties along “cross-weld” specimens machined from a stainless steel three-pass welded plate. The technique, which could also be done with digital image correlation, was applied to quantify how the material 0.2%, 1%, 2%, 5%, 10%, and 20% proof stress varied with distance from the center-line of the weldment for parent and weld material associated with the first and final passes. The stress-strain curves measured by the ESPI method correlated closely with stress-strain data measured using conventional test specimens. The measured results are consistent with the hypothesis that thermo-mechanical cycles associated with the welding process work harden previously deposited (single-pass) weld metal and the surrounding parent material. The stress-strain response of the heat affected zone adjacent to the first weld pass is consistent with an accumulated (equivalent monotonic) plastic strain of 6.5% and that of the first pass weld bead was consistent with an accumulated plastic strain of approximately 4% greater than the state of the final pass weld metal

Item Type: Journal Article
Copyright Holders: 2009 American Society of Mechanical Engineers (ASME)
ISSN: 0094-9930
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetBritish Energy Generation Limited
Keywords: electronic speckle pattern interferometry; stainless steel; stress-strain relations; welding; welds
Academic Unit/Department: Mathematics, Computing and Technology > Engineering & Innovation
Item ID: 31308
Depositing User: Anne Green
Date Deposited: 16 Jan 2012 13:33
Last Modified: 30 Nov 2012 16:57
URI: http://oro.open.ac.uk/id/eprint/31308
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