Tension and Compression Creep Apparatus for Wood–Plastic Composites

    Volume 39, Issue 6 (November 2011)

    ISSN: 0090-3973


    Published Online: 10 August 2011

    Page Count: 6

    Hamel, Scott E.
    Univ. of Wisconsin–Madison,

    Hermanson, John C.
    USDA Forest Products Laboratory,

    Cramer, Steven M.
    Univ. of Wisconsin–Madison,

    (Received 20 December 2010; accepted 18 July 2011)


    Design of structural members made of wood–plastic composites (WPCs) is not possible without accurate test data for tension and compression. The viscoelastic behavior of these materials means that these data are required for both the quasi-static stress–strain response, and the long-term creep response. Their relative incompressibility causes inherent difficulties in creating effective clamping devices that do not preload the specimens. In order to conduct repeats of both test modes at multiple stress levels for at least 90 days, uni-axial test apparatuses must be economical and mass producible. Further, all tests must be conducted in an environment that is moisture and temperature controlled, creating space constraints. This paper describes economical apparatuses for both tension and compression creep testing that do not preload the specimens, require a minimum of floor space, and are easy and safe to load and unload. The operation and typical data for the tests are presented to demonstrate the apparatuses.

    Paper ID: JTE103715

    DOI: 10.1520/JTE103715

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    Title Tension and Compression Creep Apparatus for Wood–Plastic Composites
    Symposium , 0000-00-00
    Committee D07