Temperature Effects on Ultimate Bearing Strength of Polymeric Composite Joints

    Volume 24, Issue 1 (January 2002)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 7


    Counts, WA

    Johnson, WS
    G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA

    (Received 11 December 2000; accepted 18 September 2001)

    Abstract

    The ultimate bearing strength (UBS) of IM7/PETI-5 composite materials in a quasi-isotropic lay-up, 64 plies thick, was determined using a compressive bearing test setup. Testing was performed at room temperature, 177°C (350°F) and −50°C (−58°F). Some specimens were thermally aged at 177°C (350°F) for up to 10000 h. It was found that the IM7/PETI-5 composite material's UBS was essentially unaffected by the thermal aging. At elevated temperature, the UBS of IM7/PETI-5 decreased, while at low temperature, the UBS increased slightly. Despite the increase in UBS at low temperature, the bearing failure was catastrophic, resulting in widespread delamination due to the brittleness of the matrix.


    Paper ID: CTR10893J

    DOI: 10.1520/CTR10893J

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    Author
    Title Temperature Effects on Ultimate Bearing Strength of Polymeric Composite Joints
    Symposium , 0000-00-00
    Committee D30