You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Statistical Aspects of Constraint with Emphasis on Testing and Analysis of Laboratory Specimens in the Transition Region

    Published: 0

      Format Pages Price  
    PDF (380K) 25 $25   ADD TO CART
    Complete Source PDF (9.0M) 514 $122   ADD TO CART


    The effect of specimen thickness, side grooving, large-scale yielding of the ligament, and ductile tearing upon the probability of cleavage fracture initiation is examined within the framework of a general statistical model for cleavage fracture initiation. First, a derivation of the statistical model is presented, and then the model is used to explain the effects of different factors affecting the cleavage fracture probability. As a result, a specimen size requirement for elastic-plastic cleavage fracture toughness testing with bend-type specimens is obtained. Additionally, a simple correction function to validate invalid test results with insufficient ligament size and prior ductile tearing is presented.


    cleavage fracture initiation, constraint, statistical modelling, fracture toughness testing, transition region

    Author Information:

    Wallin, K
    Senior advisor, Technical Research Center of Finland (VTT), Metals Laboratory, Espoo,

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP18032S