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Graphite-Fiber Elastic Constants: Determination from Ultrasonic Measurements on Composite Materials

  • Subhendu Datta
  • Hassel Ledbetter
  • Tetsuyuki Kyono

Abstract

We determined the complete five-component transverse-isotropic-symmetry elastic-constant tensor for two graphite fibers: high-strength/low-modulus and low-strength/high-modulus. We did this in two steps. First, we measured ultrasonically the complete elastic constants of a metal matrix with embedded uniaxial graphite fibers. Second, we did an inverse—modeling calculation to extract the fiber’s elastic constants. This calculation requires three inputs: composite elastic constants, matrix elastic constants, and fiber-matrix phase geometry, principally the fiber volume fraction. We compare the results with those expected for a random quasiisotropic graphite aggregate and for a hypothetical graphite fiber with perfectly aligned basal planes.

Keywords

Elastic Constant Fiber Volume Fraction Graphite Fiber Magnesium Matrix Phenyl Salicylate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    A. Kitamura and S. Kataoka, in Proceedings, International Carbon Conference (Bordeaux, France, July 1984), p. 216. Toray Data Sheet TY-111A (June 1983).Google Scholar
  2. 2.
    H.M. Ledbetter and D.T. Read, J. Appl. Phys. 48, 1874–1879 (1977).CrossRefGoogle Scholar
  3. 3.
    H.M. Ledbetter, N.V. Frederick, and M.W. Austin, J. Appl. Phys. 51, 305–309 (1980).CrossRefGoogle Scholar
  4. 4.
    R.D. Kriz and W.W. Stinchcomb, J. Exper. Mech. 19, 41–49 (1979).CrossRefGoogle Scholar
  5. 5.
    Z. Hashin and B.W. Rosen, J. Appl. Mech. 31, 223–232 (1964).CrossRefGoogle Scholar
  6. 6.
    S.K. Bose and A.K. Mal, J. Mech. Phys. Solids 22, 217–229 (1974).CrossRefGoogle Scholar
  7. 7.
    R. Hill, J. Mech. Phys. Solids 12, 199–212 (1964).CrossRefGoogle Scholar
  8. 8.
    S.K. Datta and H.M. Ledbetter, Int. J. Solids Struct. 19, 885–894 (1983).CrossRefGoogle Scholar
  9. 9.
    S.K. Datta, H.M. Ledbetter, and R.D. Kriz, Int. J. Solids Struc. 20 429–432 (1984).CrossRefGoogle Scholar
  10. 10.
    H.H. Wawra, B.K.D. Gairola, and E. Kroner, Z. Metallkd. 73, 69–71. (1982).Google Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • Subhendu Datta
    • 1
  • Hassel Ledbetter
    • 2
  • Tetsuyuki Kyono
    • 3
  1. 1.Department of Mechanical Engineering and CIRESUniversity of ColoradoBoulderUSA
  2. 2.Institute for Materials Science and EngineeringNational Institute of Standards and TechnologyBoulderUSA
  3. 3.Composite Materials LaboratoryToray IndustriesShigaJapan

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