STP743

    Relationship Between Critical Stretch Zone Width, Crack-Tip Opening Displacement, and Fracture-Energy Criterion: Application to SA-516-70 Steel Plates

    Published: Jan 1981


      Format Pages Price  
    PDF (328K) 10 $25   ADD TO CART
    Complete Source PDF (11M) 10 $65   ADD TO CART


    Abstract

    Relationships are developed between the crack-tip opening displacement (CTOD), fracture-energy criterion (JIc), and critical stretch zone width (WSZc) using a simple geometrical model of the crack tip. Stretch zone width is directly measured from micrographs of fracture surfaces.

    For three-point-bend specimens of SA-516-70 steel, JIc evaluated from measured values of WSZc is equal to 0.173 MJ-m−2 compared with 0.200 MJ-m−2 determined from the single-specimen method in which the crack onset point is detected by the electrical potential method.

    Keywords:

    stretch zone, J-integral, crack-tip opening displacement, fracture


    Author Information:

    Nguyen-Duy, P
    Scientist, Materials Sciences Directorate, Institut de Recherche d'Hydro-Québec (IREQ), Varennes, Québec


    Paper ID: STP28817S

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP28817S


    CrossRef ASTM International is a member of CrossRef.