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Online ISSN : 1884-0329
Print ISSN : 1880-9928
ISSN-L : 1880-9928
INFLUENCE OF INCOMPLETE PENETRATION SIZE ON FATIGUE CRACK INITIATION POINTS OF LOAD-CARRYING CRUCIFORM WELDED JOINTS
Koji KINOSHITAShinpei ARAKAWA
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JOURNALS FREE ACCESS

2009 Volume 16 Issue 64 Pages 64_65-64_70

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Abstract

This paper investigates influence of incomplete penetration size on fatigue crack initiation points of load-carrying cruciform welded joints. The investigation was performed by fine meshed FEM using Effective Notch Stress Approach. As a result, to prevent fatigue crack initiated from welded root when the plate thickness is about 34mm, incomplete penetration size should be less than 10% of the plate thickness, and the influences of incomplete penetration size increase with an increase of the plate thickness. Also, a reduction of the stress at the weld root by increasing the weld size is not expected when the plate thickness is thick and welding becomes an unequal leg length welding.

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© 2009 Japanese Society of Steel Construction
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