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    Volume 44, Issue 6 (November 2016)

    Correlation of Global Quantities for Material Characterization by Sharp Indentation Testing of Elastoplastic Materials

    (Received 13 January 2015; accepted 13 August 2015)

    Published Online: 29 November 2016

    CODEN: JTEVAB

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    Abstract

    Indentation problems pertinent to sharp indenters were examined. The analysis concerned classical elastic-plastic materials and, especially so, the details of the behavior of global contact quantities, such as mean contact pressure and the size of the contact area, in the transition region where elastic and plastic effects are of equal magnitude. The global contact quantities were correlated accurately using a single parameter, comprising both geometrical and mechanical properties, and presented using closed form expressions directly applicable to material characterization or measurements of residual mechanical fields by sharp indentation tests, but also for situations such as contact in gears or in electronic devices. The derived relations were based on highly accurate previous results from finite element studies of sharp indentation problems.


    Author Information:

    Larsson, Per-Lennart
    Dept. of Solid Mechanics, Royal Inst. of Technology, Stockholm,


    Stock #: JTE20150011

    ISSN:0090-3973

    DOI: 10.1520/JTE20150011

    Author
    Title Correlation of Global Quantities for Material Characterization by Sharp Indentation Testing of Elastoplastic Materials
    Symposium ,
    Committee E28