The relationship between fracture toughness estimated using standard single edge notch bend (SENB), single edge notch tension (SENT) test specimens and fracture toughness associated with a circumferential flaw in a pipe girth weld is explored in terms of constraint using the Q parameter. It is shown that in the elastic-plastic regime, use of standard deeply notched SENB specimens provides a conservative assessment of fracture toughness, for both weld metal and HAZ, because of the high constraint associated with this specimen geometry. Use of specimen geometries and loading modes associated with lower constraint (e.g. SENT and shallowed notched SENB specimens), allow for improved estimates of fracture toughness to be made that are appropriate for the assessment of circumferential flaws in pipe girth welds. Recommendations are given on the specimen designs and notch orientations to be employed when evaluating weld metal and HAZ fracture toughness.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Fracture toughness estimation for pipeline girth welds


    Beteiligte:
    Pisarski, H.G. (Autor:in) / Wignall, C.M. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    5 Seiten, 7 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Fracture toughness testing of pipeline girth welds

    Shen, G. / Gianetto, J.A. / Bouchard, R. et al. | Tema Archiv | 2004


    Tensile and toughness properties of pipeline girth welds

    Gianetto, J.A. / Bowker, J.T. / Bouchard, R. et al. | Tema Archiv | 2007


    Defect tolerance in pipeline girth welds

    Hopkins, P. / Jones, D.G. / Fearnehough, G.D. | Tema Archiv | 1984


    Local strain accumulation in pipeline girth welds

    Mohr, Wjlliam / Gordon, Robin / Smith, Robert | Tema Archiv | 2004


    An experimental study of the fracture properties of oil pipeline girth welds

    Qu, W. / Dhang, Y. / Bao, Y. et al. | Tema Archiv | 1999