Evaluation of the effect of plate thickness on the fatigue strength of butt-welded joints by a test maintaining maximum stress at the yield strengthOhta, A., Mawari, T. and Suzuki, N. Eng. Fract. Mech. 1990 37, (5), 987–993

In this study, fatigue strength of load-carrying cruciform fillet welded joints were evaluated using a new method proposed by Yamada, for geometric or structural stress in welded joint, that is, one-millimeter stress below the surface in the direction corresponding to the expected crack path. Validity of the method is verified by analyzing fatigue test results for load-carrying cruciform welded specimens has different size of weld toe radius, leg length and plate thickness reported in literature. Structural stress concentration factor for 1mm below the surface was calculated by finite element analysis for each specimen respectively. When compared to the basic fatigue resistance curve offered by BS7608, the one-millimeter stress method shows conservative evaluation for load-carrying cruciform fillet welded joints.

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Effect of Plate Thickness on the Fatigue Strength of Cruciform Welded Joints

10.4043/5558-ms ◽

1987 ◽

Cited By ~ 1

Author(s):

A. Narumoto ◽

S. Matsumoto ◽

Y. Kawai

Keyword(s):

Fatigue Strength ◽

Welded Joints ◽

Plate Thickness

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Low cycle fatigue strength of cruciform welded joints considering plate thickness

Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Bridge Maintenance, Safety and Management ◽

10.1201/b10430-510 ◽

2010 ◽

pp. 643-643

Author(s):

K Kinoshita ◽

K Ueda

Keyword(s):

Fatigue Strength ◽

Welded Joints ◽

Low Cycle Fatigue ◽

Plate Thickness ◽

Cycle Fatigue

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Fatigue strength of non-load-carrying cruciform welded joints by a test maintaining maximum stress at yield strength

Engineering Fracture Mechanics ◽

10.1016/0013-7944(94)90056-6 ◽

1994 ◽

Vol 49 (4) ◽

pp. 639-645 ◽

Cited By ~ 3

Author(s):

Ohta Akihiko ◽

Matsuoka Kazuyoshi ◽

Suzuki Naoyuki ◽

Maeda Yoshio

Keyword(s):

Fatigue Strength ◽

Yield Strength ◽

Welded Joints ◽

Maximum Stress ◽

Load Carrying

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Recent developments and future challenges in fatigue strength assessment of welded joints

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406214550015 ◽

2014 ◽

Vol 229 (7) ◽

pp. 1224-1239 ◽

Cited By ~ 17

Author(s):

Wolfgang Fricke

Keyword(s):

Fatigue Strength ◽

Welded Joints ◽

Plate Thickness ◽

Stress Gradient ◽

Fatigue Behaviour ◽

Welded Structures ◽

Strength Assessment ◽

Propagation Law ◽

Recent Developments ◽

Fatigue Strength Assessment

Fatigue is an important design criterion for welded structures subjected to cyclic loading. Several approaches for fatigue strength assessment have been developed which are either based on Woehler S–N curves and damage accumulation rule or on crack propagation law. The paper briefly reviews the different approaches, highlighting their advantages and limitations. In this connection, the problematic distinction between crack initiation and propagation phases is discussed, followed by considerations about some parameters which have large influence on the fatigue behaviour of welded joints but are considered differently in the approaches, such as plate thickness and stress gradient effects, multiaxial stress states, welding-induced distortions and residual stresses. Finally, ways of improving the fatigue behaviour of welded structures, either during design by reducing the stress concentration or during fabrication by improved quality or post-weld treatment or else by special material characteristics, are addressed. Emphasis will be placed on recent developments and challenges for the future from a personal perspective of the author.

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