Polymer Mechanics

, Volume 12, Issue 3, pp 375–379 | Cite as

Anisotropy of the low-cycle tensile fatigue strength and deformability of a glass-reinforced plastic

  • N. E. Sarkisyan
Strength Of Materials
  • 17 Downloads

Abstract

Experimental results on the anisotropy of the strength and deformability of a 1:1 SVAM oriented glass-reinforced plastic in low-cycle tension in the directions ϕ=0, 15, 30, and 45° are discussed. The loading frequency was 1–1.5 cycles/minute. A three-dimensional fatigue strength diagram is constructed in σmax - ϕ - log N coordinates. It is shown that in the direction ϕ=0° the fracture strain depends on stress, whereas at ϕ≠0° the glass-reinforced plastic fails at almost the same maximum strain, the value of which depends on ϕ, but is invariant with respect to σmax. It is established that the rate of development of the strain extrema on the linear part of the ɛ (N) graph and the stress σmax are related by a power-law dependence, whose parameters are determined by the anisotropy of the mechanical properties of the composite.

Keywords

Fatigue Mechanical Property Anisotropy Fatigue Strength Linear Part 

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Literature cited

  1. 1.
    A. K. Malmeister, V. P. Tamuzh, and G. A. Teters, Strength of Rigid Polymeric Materials [in Russian], 2nd ed., Riga (1972).Google Scholar
  2. 2.
    B. I. Panshin, G. M. Bartenev, and G. N. Finogenov, "Strength of plastics under repeat loading," Plast. Massy, No. 11, 47–54 (1960).Google Scholar
  3. 3.
    M. K. Smirnova, B. P. Sokolov, Ya. S. Sidorin, and A. P. Ivanov, Strength of Glass-Reinforced Plastic Hulls [in Russian], Leningrad (1965).Google Scholar
  4. 4.
    E. N. Kvasnikov and G. M. Dolganov, "Effect of high cyclic tensile stresses on the strength and deformability of glass-reinforced plastics. Engineering structures," in: Proceedings of the 25th Scientific Conference of the Leningrad Structural Engineering Institute [in Russian], Leningrad (1967), pp. 124–126.Google Scholar
  5. 5.
    S. F. Glazov, "Deformability of glass-reinforced plastics in repeated static bending," Plast. Massy, No. 1, 58–61 (1967).Google Scholar
  6. 6.
    G. P. Zaitsev and V. S. Strelyaev, "Resistance of glass-reinforced plastics to deformation and fracture in static tension," in: Structural Properties of Plastics [in Russian], Moscow (1968), pp. 36–70.Google Scholar
  7. 7.
    T. K. James, F. J. Appl, and C. W. Bert, "Low-cycle fatigue of glass-fabric-reinforced plastic laminate," Exp. Mech.,8, No. 7, 327–330 (1968).Google Scholar
  8. 8.
    Kavada Yukti and Kobayasi Khirosi, "Low-cycle fatigue of glass-reinforced plastics," Ref. Zh. Mekh. (1971), 12VI677.Google Scholar
  9. 9.
    N. E. Sarkisyan, "Effect of heat treatment on the fatigue properties of a nonfabric glass-reinforced plastic," Izv. Akad. Nauk ArmSSR,25, No. 5, 71–76 (1972).Google Scholar
  10. 10.
    A. K. Mitropol'skii, Statistical Computation Technique [in Russian], Moscow (1961).Google Scholar
  11. 11.
    G. L. Slonimskii, A. A. Askadskii, and V. V. Kazantsev, "Brittle and nonbrittle polymer fracture," Vysokomolek. Soed.,14, No. 5, 1149–1155 (1972).Google Scholar

Copyright information

© Plenum Publishing Corporation 1977

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  • N. E. Sarkisyan

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