Volume 13, Issue 3 (January 1991)

    A Study of Failure Characteristics in Thermoplastic Composite Material at 250°F (121°C)

    CODEN: CTROAD

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    Abstract

    A study was conducted to investigate the failure characteristics of thermoplastic composite graphite/polyetheretherketone (Gr/PEEK) at 250°F (121°C). The stacking sequences of specimens used in the study were [0°]16, [90°]16, [±45°]45, and [0°/±45°/90°]2s. Specimens of the first three ply layups, namely, [0°]16, [90°]16, and [±45°]4s were used to determine the basic stress-strain data at 250°F (121°C). In addition, specimens containing a hole (one-third diameter-to-width ratio) corresponding to all the four stacking sequences were manufactured to determine the stress-strain response, the progression of failure, and ultimate tensile strengths. Testing the specimens with ply layups of [±45°]4s and [0°/±45°/90°]2s containing ±45° plies was complicated by the development of high strains, thereby causing the strain gages to peel off during tests.


    Author Information:

    Palazotto, AN
    Professor, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH

    Fisher, JM
    Robins Air Force Base, GA

    Sandhu, RS
    Aerospace engineer, Structural Concepts Branch, Structures Division, Wright Laboratory, Wright-Patterson Air Force Base, OH


    Stock #: CTR10220J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10220J

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    Author
    Title A Study of Failure Characteristics in Thermoplastic Composite Material at 250°F (121°C)
    Symposium , 0000-00-00
    Committee D30