Enhancement of the Fatigue Property of the Crack of Cruciform Welded Joints by TIG-Dressing

Dong Xia Li; Bao Chun Jia; Yan Zhi Zhu

doi:10.4028/www.scientific.net/AMR.146-147.1419

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 146-147Enhancement of the Fatigue Property of the Crack...

Enhancement of the Fatigue Property of the Crack of Cruciform Welded Joints by TIG-Dressing

Abstract:

The effect of TIG-dressing on fatigue strength in support of the fillet weld of offshore platform was investigated experimentally in the paper. According to the causes in which most cracks are produced in actual structure, the model tests have been performed based upon cruciform weld bead characteristic. The TIG-dressing technique parameters were established by the actual structure and the fatigue specimen tests were done also. The life estimation equation after TIG-dressing is presented by least square method. The fatigue life used by TIG-dressing has increased over 100%. Therefore the TIG-technique gives a big potential for engineering application.

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Periodical:

Advanced Materials Research (Volumes 146-147)

Pages:

1419-1422

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.146-147.1419

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Online since:

October 2010

Authors:

Dong Xia Li, Bao Chun Jia, Yan Zhi Zhu

Keywords:

Crack, Cruciform Welded Joint, Fatigue Life, Four-Point Bending, TIG Dressing

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References

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