Estimation of stress intensity factor solutions for weld toe cracks in offshore tubular joints
Estimation of stress intensity factor solutions for weld toe cracks in offshore tubular joints
This paper proposes an engineering methodology for estimating stress intensity factor (K) Solutions for semi-elliptical weld toe cracks in tubular joints. The methodology uses the T-butt solutions proposed previously by the authors in conjunction with the joints. The estimated K factors are then compared stress concentration factors and the degrees of bending in the uncracked tubular with those obtained from a well-validated finite element procedure and the validity of the proposed methodology is demonstrated. A more refined way of calculating the uncracked stress field parameters which leads to more accurate predictions is also proposed. Fatigue crack growth calculations on experimental joints indicate that the proposed methodology is conservative.
stress intensity factors, weld toe cracks, tubular joints, offshore structure
861-875
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
2002
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Bowness, D.
8f1df5c0-39a8-44ca-aad7-2c57869e6631
Lee, M.M.K. and Bowness, D.
(2002)
Estimation of stress intensity factor solutions for weld toe cracks in offshore tubular joints.
International Journal of Fatigue, 24 (8), .
(doi:10.1016/S0142-1123(01)00209-2).
Abstract
This paper proposes an engineering methodology for estimating stress intensity factor (K) Solutions for semi-elliptical weld toe cracks in tubular joints. The methodology uses the T-butt solutions proposed previously by the authors in conjunction with the joints. The estimated K factors are then compared stress concentration factors and the degrees of bending in the uncracked tubular with those obtained from a well-validated finite element procedure and the validity of the proposed methodology is demonstrated. A more refined way of calculating the uncracked stress field parameters which leads to more accurate predictions is also proposed. Fatigue crack growth calculations on experimental joints indicate that the proposed methodology is conservative.
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Published date: 2002
Keywords:
stress intensity factors, weld toe cracks, tubular joints, offshore structure
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Local EPrints ID: 39415
URI: http://eprints.soton.ac.uk/id/eprint/39415
ISSN: 0142-1123
PURE UUID: ec1c27ef-a9fc-4692-8d91-5bc3475008a2
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Date deposited: 28 Jun 2006
Last modified: 15 Mar 2024 08:13
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Author:
M.M.K. Lee
Author:
D. Bowness
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