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Isolating failure mechanisms in a fiberglass/epoxy tensile test specimen using acoustic emission signal parameters

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  • معلومة اضافية
    • Added Details:
      Hill, Eric v. K. advisor
      Embry-Riddle Aeronautical University. Department of Aerospace Engineering.
    • Call Numbers:
      TA418.84 .K68 1992eb
    • نبذة مختصرة :
      This study used acoustic emission (AE) signal parameters to isolate the failure mechanisms in a 0° unidirectional, fiberglass/epoxy tensile test specimen. Since several failure mechanisms were known to be present, the lack of any distinctly identifiable bands in the original amplitude distribution indicated that there was considerable overlap between the AE signals of the various failure mechanisms. In order to separate the amplitude bands associated with each mechanism, it was necessary to sort on the duration of the AE signal. Two additional plots, counts versus amplitude and hits versus counts, were used to verify that the amplitude distributions were comprised of a single predominant mechanism. A total of seven failure mechanisms were isolated from the original data set, all but two having a shape similar to that of a normal distribution.
    • الموضوع:
      Acoustic emission testing.; Glass fibers Fatigue.; Epoxy resins Fatigue.; Nondestructive testing.; Contrôle par émission acoustique.; Fibres de verre Fatigue.; Résines époxydes Fatigue.; Contrôle non destructif.; nondestructive testing.; Acoustic emission testing; Nondestructive testing
    • Note:
      Also available in print.
      "Daytona Beach, Florida, December 1992."
      Includes bibliographical references (leaves 47-48).
      Signature page -- Acknowledgements -- Abstract -- List of tables -- List of figures -- 1. Introduction -- 2. Acoustic emission signal identification. 2.1. Acoustic emission parameters ; 2.2. Initial emission parameters ; 2.3. Failure mechanisms -- 3. Experimentation -- 4. Previous research -- 5. Isolation of failure mechanisms. 5.1. Region I - mechanism 1 ; 5.2. Regions II and III ; 5.3. Region II - mechanisms 6 and 7 ; 5.4. Region III - mechanisms 2 through 5. 5.4.1. Mechanism 2 ; 5.4.2. Mechanisms 3 through 5 ; 5.5. Summary -- 6. Conclusions and recommendations. 6.1. Conclusions ; 6.2. Recommendations -- 7. References -- Appendices. Appendix A. Isolation of mechanism 3 ; Appendix B. Isolation of mechanism 4 ; Appendix C. Isolation of mechanism 5.
    • Other Numbers:
      FER oai:commons.erau.edu:db-theses-1148
      1014343156
    • Contributing Source:
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1014343156