Abstract
Under the as-welded condition the fatigue crack initiation period was considered nonexistent and Linear Elastic Fracture Mechanics (LEFM) was used to calculate fatigue strength for a range of weld geometries. Fracture mechanics assessment of welded joints requires accurate solutions for stress intensity factor (SIF). However, the solutions for the SIF of complex welded joints are difficult to determine due to the complicated correction factors. Three methods for SIF prediction are discussed on fillet welded specimens containing continuous or semi-elliptical surface cracks, including the traditional correction method M k , the approximate correction method K t , and the suggested additional crack size method (ac+ae). The new additional crack parameter ae is used to replace the stress concentration effect of weld profile M k , which simplifies the calculation process. Experimental results are collected to support fatigue strength assessment of the additional crack size method.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
S.T. Lie, Analysis of fatigue strength on non-load-carrying and load-carrying fillet welded joints, J. Strain Anal. 29 (4) (1994) 243–255.
T. Nykänen, G. Marquis, T. Björk, A simplified fatigue assessment method for high quality welded cruciform joints, Int. J. Fatigue 31 (2009) 79–87.
G.R. Irwin, The crack extension force for a part through crack in a plate, J. Appl. Mech. 29 (1962) 651–654 ASME.
S.J. Maddox, An analysis of fatigue cracks in fillet welded joints, Int. J. Fract. 11 (2) (1975) 221–243.
J.R. Rice, Plastic yielding at a crack tip, in: Proceedings of 1st Conference on Fracture, Sendai, 1965.
J. Schijve, Cumulative damage problems in aircraft structures and materials, Aeronaut. J. R. Aeronaut. Soc. 74 (714) (1970) 517–532.
Brown, W.F. and Srawley, J.E., Plane strain crack toughness testing of high strength metallic materials. West Conshohocken: ASTM, 1966.
H. Tada, P.C. Paris, G.R. Irwin, The Stress of Crack Handbook, ASTM, 2000.
J.C. Newman, Fracture analysis of surface- and through-cracked sheets and plates, Eng. Fract. Mech. 5 (1973) 667–689.
J.C. Newman, I.S. Raju, An empirical stress-intensity factor equation for the surface crack, Eng. Fract. Mech. 15 (1–2) (1981) 185–192.
X.P. Huang, W.C. Cui, D.X. Shi, Calculation of fatigue life of surface cracks at weld toe of submarine cone-cylinder, J. Ship Mech. 6 (4) (2002) 62–68.
B. Fu, J.V. Haswell, P. Bettess, Weld magnification factors for semi-elliptical surface cracks in fillet welded T-butt joint models, Int. J. Fract. 63 (1993) 155–171.
D. Bowness, M.M.K. Lee, Prediction of weld toe magnification factors for semi-elliptical cracks in T-butt joint, Int. J. Fatigue 22 (2000) 369–387.
D. Bowness, M.M.K. Lee, Weld toe magnification factors for semi-elliptical cracks in T-butt joints-comparison with existing solutions, Int. J. Fatigue 22 (2000) 389–396.
Y. Han, X.P. Huang, W.C. Cui, The simplified calculation method of stress intensity factors of surface cracks in T-butt joint, Ship Build. China 47 (1) (2006) 1–11.
D.J. Hayes, A practical application of buekner’s formulation for determining stress intensity factors for cracked bodies, Int. J. Fract. Mech. 8 (2) (1972) 157–165.
T. Nykänen, G. Marquis, T. Björk, Fatigue analysis of non-load-carrying fillet welded cruciform joints, Eng. Fract. Mech. 74 (3) (2007) 399–415.
M.L. Williams, Stress singularities resulting from various boundary conditions in angular corners of plates in extension, J. Appl. Mech. 19 (1952) 526–528.
P. Lazzarin, R. Tovo, A unified approach to the evaluation of linear elastic stress fields in the neighborhood of cracks and notches, Int. J. Fract. 78 (1996) 3–19.
P. Lazzarin, R. Tovo, A notch stress intensity factor approach to the stress analysis of welds, Fatigue Fract. Eng. Mater. Struct. 21 (1998) 1089–1103.
P. Lazzarin, P. Livieri, Notch stress intensity factors and fatigue strength of aluminium and steel welded joints, Int. J. Fatigue 23 (2001) 225–232.
W. Shen, N. Barltrop, R.J. Yan, E.Q. Liu, K. Qin, L.F. Song, Stress field and fatigue strength analysis of 135-degree sharp corners under tensile and bending loadings based on notch stress strength theory, Ocean Eng. 107 (2015) 32–44.
W. Shen, R.J. Yan, N. Barltrop, P. Yang, E.Q. Liu, K. Qin, Stress field analysis of 135-degree sharp corners based on notch stress strength theory, J. Ship Mech. 19 (3) (2015) 273–283.
L. Xu, B.Q. Lou, N. Barltrop, Considerations on the fatigue assessment methods of floating structure details, J. Eng. Marit. Environ. 227 (3) (2013) 284–294.
W. Shen, Stress Field and Fatigue Strength Assessment of Ship Welded Joints Based On Singular Strength Theory, Wuhan University of Technology, Wuhan, 2015.
Hobbacher. A., Recommendations on fatigue of welded components. IIW Document XV-845-96, 1996.
Welding Standards Policy Committee. Fatigue design and assessment of steel structures. British Standard 7608, 1993.
T.R. Gurney, The Influence of Thickness On the Fatigue Strength of Welded Joints, Abington Publishing, Cambridge, 1979.
P. Dong, A structural stress definition and numerical implementation for fatigue analysis of welded joints, Int. J. Fatigue 23 (10) (2001) 865–876.
T.R. Gurney, The Fatigue Strength of Transverse Fillet Welded Joints, Abington Publishing, Cambridge, 1991.
K.M. Engesvik, T. Moan, Probabilistic analysis of the uncertainty in the fatigue capacity of welded joints, Eng. Fract. Mech. 18 (4) (1983) 743–762.
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Natural Science Foundation of China (No. 51609185) and the State Key Laboratory of Ocean Engineering in Shanghai Jiao Tong University (No. 1613).
Rights and permissions
About this article
Cite this article
Shen, W., Yan, R., Barltrop, N. et al. A simplified fatigue assessment method for transverse fillet welded joints. Acta Mech. Solida Sin. 30, 198–208 (2017). https://doi.org/10.1016/j.camss.2017.03.001
Published:
Issue Date:
DOI: https://doi.org/10.1016/j.camss.2017.03.001