Automotive manufacturers typically use resistance spot welding (RSW) for their automotive body sheet metal assembly. RSW offers a number of advantages over other sheet-metal-joining techniques, including high speed, ease of automation, and energy efficiency. However, one of the major concerns of spot weld joints is fatigue. Recently, a fatigue enhancement process for resistance spot welds, namely a post-weld cold-working process, has been introduced and has given significant improvement in fatigue lives of resistance spot welds. The post-weld cold-working process imparts compressive residual stresses around the joint, which can benefit the fatigue strength. This paper presents experimental and numerical investigations on the use of the post-weld cold-working process to improve the fatigue strength of low-carbon steel resistance spot welds. The effect of the post-weld cold-working process parameters on fatigue strength is investigated and the optimum process condition is proposed. In addition, a finite element analysis is carried out to evaluate the residual stress distribution after cold working.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fatigue enhancement of post-weld cold-worked low-carbon steel resistance spot welds


    Contributors:
    Kim, D-W (author) / Blake, D (author) / Kim, B-J (author) / Kim, M-H (author) / Lim, B-S (author)


    Publication date :

    2008-09-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Fatigue enhancement of post-weld cold-worked low-carbon steel resistance spot welds

    Kim,D.W. / Blake,D. / Kim,B.J. et al. | Automotive engineering | 2008


    Improvement of fatigue life in post-weld cold worked aluminum resistant spot welds

    Kim, D.-W. / Blake, D. / Ryu, S. et al. | British Library Conference Proceedings | 2005


    Fatigue Strength Improvement of Low Carbon Steel Resistance Spot Welds by the StressWave™ Process

    Flinn, B. D. / Kim, D. / Easterbrook, E. T. et al. | SAE Technical Papers | 2005


    Fatigue strength improvement of low carbon steel resistance spot welds by the StressWaveTm process

    Flinn,B.D. / Spitsen,R. / Kim,D. et al. | Automotive engineering | 2005