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The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions

Horstemeyer, Mark

Abstract Details

1987, Master of Science, Ohio State University, Mechanical Engineering.
The fatigue failure mechanisms of three unidirectional laminated composite material systems (consisting of a common fiber in three varying matrices) were investigated. Static tension tests of the composites, in both axial and transverse directions, and of the resins were used along with acoustic emissions to evaluate fatigue test data. The resins with the highest strain energy and ultimate strain were best in fatigue. Hence, unidirectional glass-polymer composites possessed a matrix dominated failure mode. But when fatigue curves for the resins and composites were compared, interface debonding was shown to be a failure mechanism. Acoustic emissions also showed that interface debonding was a major failure mechanism involved in fatigue. Acoustic Emissions also gave insight into the intermediate failure mechanisms during the fatigue life. The important aspect of the analysis is that matrix cracking and interface debonding are both involved in determining the major failure mechanism.
George Staab (Advisor)
Brian Harper (Advisor)
85 p.

Recommended Citations

Citations

  • Horstemeyer, M. (1987). The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561

    APA Style (7th edition)

  • Horstemeyer, Mark. The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions. 1987. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561.

    MLA Style (8th edition)

  • Horstemeyer, Mark. "The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions." Master's thesis, Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561

    Chicago Manual of Style (17th edition)