A blowout in a 14 in. diameter, 1/4 in. thick API 5L X46 oil pipeline was due to the sudden propagation of a fracture at the longitudinal Electrical Resistance Welding (ERW) weld. The cracks initiated from small hook crack-type defects on the external surface of the tube, in the highly deformed and hardened central area of the ERW weld. Fatigue tests were carried out to characterize initiation and propagation of fatigue cracks in base and weld metals, in two regions of the pipeline. Specimens were subjected to cyclic stresses similar to those that were produced during the passage of the scraper. The fatigue growth was modeled by integrating experimental results. Predicted fatigue lives of about 20,000 cycles justify fatigue propagation up to failure in weld metal, from initial 2 mm deep defects introduced during manufacturing.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fatigue assessment of an electrical resistance welded oil pipeline


    Contributors:

    Published in:

    Publication date :

    2002


    Size :

    8 Seiten, 20 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Fatigue assessment of a double submerged arc welded gas pipeline

    Fazzini, P.G. / Belmonte, J.C. / Chapetti, M.D. et al. | Tema Archive | 2007


    Fatigue assessment of naval welded assemblies

    Erny, Carole / Thevenet, David / Cognard, Jean-Yves et al. | Tema Archive | 2010


    Fatigue assessment of welded aluminum ship details

    Tveiten, B°ard Wathne | TIBKAT | 1999


    Fatigue Assessment of Welded Aluminium Ship Details

    Tveiten, B. W. / Moan, T. | British Library Conference Proceedings | 1999


    Improving fatigue performance of welded joints of X65 pipeline steel by UIT

    Liu, Jinming / Chen, Tong / Zhang, Yufeng | Tema Archive | 2005