STP1077

    A Comparison of the Acoustic Emission Generated from the Fracture and Decohesion of Graphite Nodules with Theoretical Predictions

    Published: Jan 1991


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    Abstract

    It has been known for many years that the fracture and/or debonding of Inclusions or second phase particles during deformation can act as a source of acoustic emission. A number of experimental studies of this phenomena have been reported. Excellent theoretical investigations of the fracture of an elastic spherical particle in a plastic matrix have been carried out and expressions have been derived for the energy released during fracture. However, there is little work where a direct comparison between experimental data and theoretical predictions can be carried out. The purpose of this paper is to report on the acoustic emission generated from the fracture and/or decohesion of spherical graphite nodules during the compressive deformation of nodular cast iron. The correlations of the experimental acoustic emission data with theoretical predictions will be reported.

    Keywords:

    acoustic emission, inclusion fracture, second phase particles, nodular cast iron


    Author Information:

    Carpenter, SH
    Professor of Physicsvisiting scholarscientist, University of DenverUniversity of DenverInstitute of Metals Research, DenverShenyang, CO

    Zhu, Z
    Professor of Physicsvisiting scholarscientist, University of DenverUniversity of DenverInstitute of Metals Research, DenverShenyang, CO


    Paper ID: STP19098S

    Committee/Subcommittee: E07.04

    DOI: 10.1520/STP19098S


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