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    Volume 25, Issue 4 (October 2003)

    Stress Corrosion Cracking in a Unidirectional E-Glass/Polyester Composite Subjected to Static and Cyclic Loading Conditions

    (Received 10 April 2003; accepted 17 July 2003)

    CODEN: CTROAD

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    Abstract

    This work evaluates the effects of static and cyclic loading conditions on the stress corrosion process in unidirectional glass/modified polyester composite in the presence of a nitric acid solution. The composites were investigated under static, cyclic, and static with overload conditions using a rectangular specimen with centrally positioned grooves. The stress corrosion process was monitored using acoustic emission (AE). It was found that the time-to-failure of the composite specimens were only slightly affected by loading conditions. However, the large scatter in the time-to-failure of the specimens did not allow for the proper evaluation of the effect of the cyclic loads on the stress corrosion fracture process. It seemed that the time-to-failure were more influenced by the specimen variations than by the type of loading. By using an AE digital set-up based on four transducers, not only can the fiber fracture by stress corrosion be very accurately monitored, but also the location of AE sources can be precisely determined.


    Author Information:

    Benedikt, B

    Armentrout, D

    Kumosa, L

    Gentz, M

    Kumosa, M
    University of Denver, Denver, CO


    Stock #: CTR10959J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10959J

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    Author
    Title Stress Corrosion Cracking in a Unidirectional E-Glass/Polyester Composite Subjected to Static and Cyclic Loading Conditions
    Symposium , 0000-00-00
    Committee D30