STP677: Fracture Analysis of a Pneumatically Burst Seamless-Steel Compressed Gas Container

    Christ, BW
    Deputy chief and project leaders, National Bureau of Standards, Washington, D.C.,

    Smith, JH
    Deputy chief and project leaders, National Bureau of Standards, Washington, D.C.,

    Hicho, GE
    Deputy chief and project leaders, National Bureau of Standards, Washington, D.C.,

    Pages: 12    Published: Jan 1979


    Abstract

    This paper describes the fracture analysis of a seamless steel compressed gas container which burst at a reported pressure of 17.3 MPa (2500 psi) during filling. Design burst pressure was about 35.2 MPa (5100 psi). The container was made of a quenched and tempered carbon-manganese steel with yield and tensile strengths of 517 and 687 MPa (75 000 and 99 800 psi), respectively. The vessel had been in service for about 6 months and had been filled perhaps twice before it burst. The fracture origin was a pair of part-through cracks in a gouged region on the outside surface. fracture at the origin was ductile and the fast fracture was also ductile. The empirical methodology developed at Battelle-Columbus for analyzing the burst of line pipe was utilized to analyze the ductile fracture initiation of this compressed gas container. Kc, JIC and KIc were estimated for this carbon-manganese pressure vessel steel.

    Keywords:

    pressure vessel, pneumatic burst, steel, ductile fracture, fracture toughness, fatigue (materials), crack propagation


    Paper ID: STP34946S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP34946S


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