QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY
Print ISSN : 0288-4771
Fatigue strength of cruciform joints with laser-arc hybrid welding
Takeshi HANJIKazuo TATEISHIMasaru SHIMIZUDaisuke UCHIDARyosuke KIMURAKoichi ASANO
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2018 Volume 36 Issue 4 Pages 219-229

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Abstract

This study examined fatigue strength of cruciform joints fabricated with laser-arc hybrid welding. Load-carrying and non-load-carrying cruciform welded joints with a plate thickness from 8mm to 25mm were tested under tensile cyclic loads and out-of-plane bending cyclic loads. Measurements of weld toe profile, residual stress and hardness around a welded portion were also conducted. The test results revealed that the fatigue strength of the hybrid welded joints is equivalent to that of arc welded joints and satisfies the fatigue design curves for arc welded joints in JSSC recommendation. Besides, the thickness effect on fatigue strength was observed in the hybrid welded joints as well as in arc welded joints.

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© 2018 by JAPAN WELDING SOCIETY
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