MECHANICAL PROPERTIES FOR THICK FIBER REINFORCED COMPOSITE MATERIALS HAVING TRANSVERSELY ISOTROPIC FIBERS

By using equations developed by Hashin it was shown that lamina and fiber properties could be obtained at any fiber volume fraction. Improvements on the experimental ultrasonic techniques for determining experimental properties was demonstrated. Specimen sizing was calculated based on energy flux deviation from the plane wave normal. In particular for AS-3501 graphite/epoxy the largest energy flux deviation was found to be 44 degrees. It was found that the transversely isotropic fiber properties could be accurately obtained by curve fitting experimental data using Hashin's equations. Graphite fibers were found to be definitely transversely isotropic such that the ratio of the transverse to the longitudinal fiber modulus was equal to one tenth.

  • Corporate Authors:

    Virginia Polytechnic Institute and State University, Blacksburg

    Department of Agronomy
    Blacksburg, VA  USA  24061

    Air Force Office of Scientific Research

    Bolling AFB
    Washington, DC  USA  20332
  • Authors:
    • Kriz, R D
    • Stinchcomb, W W
  • Publication Date: 1977-5

Media Info

  • Pagination: 104 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00155358
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: VPI-E-77-13
  • Contract Numbers: AF-AFOSR-2358-72
  • Files: NTIS
  • Created Date: Jul 19 2002 12:00AM