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http://dx.doi.org/10.5781/KWJS.2011.29.4.429

Patterns and Characteristics of Fatigue Failure in Cruciform Fillet Weld Joint  

Lee, Yong-Bok (Department of Mechanical & system design Engineering, Hongik Univ.)
Chung, Joon-Ki (Department of Mechanical & system design Engineering, Hongik Univ.)
Park, Sang-Heup (Mechanical and Automative Engineering, Kongju National Univ.)
Publication Information
Journal of Welding and Joining / v.29, no.4, 2011 , pp. 67-72 More about this Journal
Abstract
The proportion of the welding in the production process of machinery, buildings and marine structures is increasing and the joining are mainly conducted by butt and fillet weld. In the case of fillet weld, the shape of structures is complicated depending on the constraint on the geometry of the structures, therefore, the full penetration is mostly difficult. Accordingly, it is necessary to establish safe and economical criteria of design of the structures through the strength based on the penetration state of the fillet weld. Patterns of fatigue failure in cruciform fillet weld jont appear in the form of the root, toe and mixed failure. In the case of toe and mixed failure, the fatigue strength is higher than root failure. Therefore, we have to make the enough depth of penetration or perform the welding work through improving the fatigue strength of cruciform joints in welded structures. So it is necessary to optimize the penetrated depth in the range of the possible mixed failure and find the way in the cost-effective design to lessen the amount of the welding work.
Keywords
Fillet weld; Fatigue failure; Fatigue strength; Penetrated depth; Toe failure; Root failure; Mixed failure;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 J. R. Garland and P. R. Kirkwood: Toward improved submerged arc weld metal, Metal Construction(Part 1), Metal Construction, 7-5 (1975), 275
2 J. R. Garland and P. R. Kirkwood: Toward improved submerged arc weld metal, Metal Construction(Part 2), Metal Construction, 7-6 (1975), 320
3 D. Radaj: Review of fatigue strength assessment of non-welded and welded structures based on local parameters, Int. J. Fatigue, 18-3 (1996), 153-170   DOI   ScienceOn
4 S. D. Pathak, V. M. Radhakrishnam and B. Guha: Fatigue crack growth in cruciform welded joints, Joining and Materials December, 1988, 12-16
5 V. Balasubramanian and B. Guha: Influence of weld size on fatigue crack growth characteristics of flux cored arc welded cruciform joints, Materials Science and Engineering, A265 (1999), 7-17
6 Yong Bok Lee, Chin Sung Chung, Young Keun Park and Ho Kyung Kim: Effect of Redistributing Residual Stress on the Fatigue Behavior of SS330 Weldment, Int. J. Fatigue, 20-8 (1998), 565-573   DOI   ScienceOn
7 Yong Bok Lee and Byung Duck Oh: Characteristics of Fatigue Crack Propagations with respect to the Angles between Rolling and Tensile Loading Directions of Steel Plates, J. of KSMTE, 14-3 (2005), 74-80   과학기술학회마을
8 S. W. Kang et al: An improvement of the fatigue strength in fillet welded cruciform joints of mild steel under pulsating tension load, JSNA of Japan, 150-11 (1981), 499
9 Yong Bok Lee, Chin Sung Chung and Nam Ik Cho: A Study on Fatigue Behavior Considering Effects of Redistributing Tensile Residual Stress and Crack Closure in SS330 Weldment, J. of KSME(A), 20-7 (1996) 2234-2245   과학기술학회마을
10 V. Balasubramanian and B. Guha: Influence of flux cored arc welded cruciform joint dimensions on fatigue life of ASTM 517 'F' grade steels, Int. J. Pres. Ves. & Pip., 75 (1998), 765-772   DOI   ScienceOn
11 J. M. Ferreira and C. M. Branco: Influence of weld and plate geometry on the fatigue strength of cruciform joints, Theor. Appl. Frac. Mech., 1988, 23-32
12 Y. B. Lee: Characteristics of Fatigue Failure according to Thickness Material and Number of Passes in Cruciform Fillet Weld Zone, Journal of KWJS, 28-6(2010), 45-50 (in Korean)   과학기술학회마을   DOI   ScienceOn
13 J. M. Ferreira and C. M. Branco: Influence of fillet weld joint geometry on the fatigue crack growth, Theor. Appl. Frac. Mech., 15 (1991), 131-142   DOI   ScienceOn