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The effects of weld mismatch on J-integrals and Q-values for semi-elliptical surface flaws

The effects of weld mismatch on J-integrals and Q-values for semi-elliptical surface flaws
The effects of weld mismatch on J-integrals and Q-values for semi-elliptical surface flaws
Three-dimensional finite element analysis of shallow semi-elliptical surface flaws in the centre of rectangular welds was undertaken, and the effects of varying weld mismatch and weld width on J-integrals and Q-values were investigated. An interesting relationship between weld width and the applied load at failure, as predicted from a J–Q failure locus, was observed. The practicalities of modifying the J- and Q-estimation schemes developed for homogeneous plates to include mismatch effects were investigated using a limited parametric study.
mismatch, j-integrals, q-values, welds, cracks
0013-7944
433-458
Boothman, D.P.
175ce142-5138-437d-8ab9-d04de63284da
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Luxmoore, A.R.
307e05c5-bacc-4f32-9ea7-4363f2e526e8
Boothman, D.P.
175ce142-5138-437d-8ab9-d04de63284da
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Luxmoore, A.R.
307e05c5-bacc-4f32-9ea7-4363f2e526e8

Boothman, D.P., Lee, M.M.K. and Luxmoore, A.R. (1999) The effects of weld mismatch on J-integrals and Q-values for semi-elliptical surface flaws. Engineering Fracture Mechanics, 64 (4), 433-458. (doi:10.1016/S0013-7944(99)00091-0).

Record type: Article

Abstract

Three-dimensional finite element analysis of shallow semi-elliptical surface flaws in the centre of rectangular welds was undertaken, and the effects of varying weld mismatch and weld width on J-integrals and Q-values were investigated. An interesting relationship between weld width and the applied load at failure, as predicted from a J–Q failure locus, was observed. The practicalities of modifying the J- and Q-estimation schemes developed for homogeneous plates to include mismatch effects were investigated using a limited parametric study.

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More information

Published date: 1 November 1999
Keywords: mismatch, j-integrals, q-values, welds, cracks

Identifiers

Local EPrints ID: 75393
URI: http://eprints.soton.ac.uk/id/eprint/75393
ISSN: 0013-7944
PURE UUID: 4881b2b5-77af-4075-b78b-0f1fa2b07dd3

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Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:15

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