STP1329

    Fracture Toughness Measurements in the Transition Regime Using Small Size Samples

    Published: Jan 1998


      Format Pages Price  
    PDF Version (384K) 24 $25   ADD TO CART
    Complete Source PDF (12M) 24 $162   ADD TO CART


    Abstract

    The present paper reports the treatment of fracture toughness data in the ductile-to-brittle transition regime by using Charpy size specimens. Size effect and statistical variation are taken into account according to a statistical model associated to the weakest link model. The methodology is first calibrated on a reference reactor pressure vessel material, for which fracture toughness data obtained on large samples are available. This methodology is successfully applied to a number of RPV steels to determine the fracture toughness behaviour in the transition regime. Monte Carlo simulations are performed to determine the confidence interval of the reference temperature as derived from a small number of tests.

    Keywords:

    fracture toughness, Charpy, transition, crack extension, scatter, probability of failure, reactor pressure vessel steel, Weibull statistics, size effect, Monte Carlo, reference temperature


    Author Information:

    Chaouadi, R
    Research scientist, SCK∙CEN, Reactor Materials Research, Mol,


    Paper ID: STP37993S

    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP37993S


    CrossRef ASTM International is a member of CrossRef.