Prediction of weld toe magnification factors for semi-elliptical cracks in T-butt joints
Prediction of weld toe magnification factors for semi-elliptical cracks in T-butt joints
This paper reports the background development of a set of equations for estimating weld toe magnification factors (Mk) for semi-elliptical cracks in T–butt joints. This set of equations has been included in the new British Standard BS 7910. The extensive finite element parametric study from which the database of Mk factors was generated is first reported. The parameters studied — crack depth and aspect ratios, attachment footprint, weld angle and weld toe radius — and the ranges covered are those likely to be found in real structures. The procedures for numerical modelling, analysis and stress intensity factor evaluation are described, and the effects of the various influencing parameters on the Mk factors are discussed. Estimation equations that were developed from multiple regression analyses of the database of Mk factors are detailed. The equations are shown, through statistical analyses, to be a very good fit to the database from which they were derived.
stress intensity factors, weld toe cracks, estimation equations, defect assessment, finite elements
359-387
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
May 2000
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
Lee, M.M.K. and Bowness, D.
(2000)
Prediction of weld toe magnification factors for semi-elliptical cracks in T-butt joints.
International Journal of Fatigue, 22 (5), .
(doi:10.1016/S0142-1123(00)00012-8).
Abstract
This paper reports the background development of a set of equations for estimating weld toe magnification factors (Mk) for semi-elliptical cracks in T–butt joints. This set of equations has been included in the new British Standard BS 7910. The extensive finite element parametric study from which the database of Mk factors was generated is first reported. The parameters studied — crack depth and aspect ratios, attachment footprint, weld angle and weld toe radius — and the ranges covered are those likely to be found in real structures. The procedures for numerical modelling, analysis and stress intensity factor evaluation are described, and the effects of the various influencing parameters on the Mk factors are discussed. Estimation equations that were developed from multiple regression analyses of the database of Mk factors are detailed. The equations are shown, through statistical analyses, to be a very good fit to the database from which they were derived.
This record has no associated files available for download.
More information
Published date: May 2000
Keywords:
stress intensity factors, weld toe cracks, estimation equations, defect assessment, finite elements
Identifiers
Local EPrints ID: 74559
URI: http://eprints.soton.ac.uk/id/eprint/74559
ISSN: 0142-1123
PURE UUID: c35db744-7091-4e54-9c26-189905e4c4c3
Catalogue record
Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 22:36
Export record
Altmetrics
Contributors
Author:
M.M.K. Lee
Author:
D. Bowness
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics