This paper summarizes efforts on improving the methodology for arrest of unstable axial ductile crack propagation for the assessment of new and future gas pipeline projects. The past ductile fracture methodologies generally involve using the Charpy V-notch test, but that test has proven to be unreliable for high toughness materials and for materials that have rising-shelf energies, and is questionable for higher strength steels than X70 grade linepipe. The improved methodology utilizes the energy from a full-thickness impact specimen, of which the DWTT is the most frequently used. Various modified-notch specimens have been proposed in order to obtain the propagation energy component of the tests. On-going efforts involve developing a more fundamental relationship between technically defensible steady-state crack propagation fracture parameters and the DWTT energy. Recent experimental dynamic data and fracture analyses are presented in this paper.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Recent efforts on characterizing propagating ductile fracture resistance of linepipe steels


    Weitere Titelangaben:

    Jüngste Bemühungen zur Beschreibung der sich ausbreitenden Verformungsbruchzähigkeit von Rohrleitungsstahl


    Beteiligte:
    Wilkowski, G. (Autor:in) / Wang, Y.Y. (Autor:in) / Rudland, D. (Autor:in)


    Erscheinungsdatum :

    2000


    Format / Umfang :

    28 Seiten, 26 Bilder, 23 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Characterizing dynamic fracture toughness of linepipe steels using the pressed-notch drop-weight-tear test specimen

    Rudland, David L. / Wang, Yong-Yi / Wilkowski, Gery et al. | Tema Archiv | 2004


    Studies on inhibition of hydrogen-induced cracking of linepipe steels

    Elboujdaini, M. / Sastri, V.S. / Perumareddi, J.R. | Tema Archiv | 2006


    Mechanical properties and bending behaviors of low temperature toughness linepipe steels

    Ahn, Seong-Soo / Cho, Woo-Yeon / Yoon, Tae-Yang et al. | Tema Archiv | 2007


    Buckling resistance of large diameter spiral welded linepipe

    Zimmerman, Tom / Xie, Jueren / Timms, Chris et al. | Tema Archiv | 2004


    Microstructure and strength dependence of occurrence of HIC in linepipe steels

    Endo, S. / Doi, M. / Ume, K. et al. | Tema Archiv | 1997