Mechanics of Composite Materials

, Volume 17, Issue 6, pp 651–656 | Cite as

Anisotropy of fracture of composites with orthogonal placement of the fibers under low-cyclic loading

  • M. Ya. Mikel'son
  • I. V. Grushetskii
  • L. V. Katinova
  • V. P. Tamuzh
Article
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Conclusions

  1. 1.

    Periodic tensile loading of orthogonally reinforced composites causes the accumulation of oriented damages through the material. After preloading the modulus of elasticity decreases in all directions.

     
  2. 2.

    As a result of low-cyclic loading of glass fabric-reinforced plastic separation of the twisted threads of the fabric orthogonal to the loading direction occurs, and microcracks form. The distance between cracks is from 0.1 to 0.25 mm.

     
  3. 3.

    During fatigue loading of aluminoboron plastic with a preassigned site of fracture crushing of the fibers occurs, and the value of P whenσ=0.75σt reaches 20%.

     
  4. 4.

    Theoretical calculation of theσ —ε relation of undamaged and damaged orthogonally reinforced plastic with consideration of cracking of the transverse layer gives a satisfactory coincidence with experiment.

     

Keywords

Fatigue Anisotropy Theoretical Calculation Tensile Loading Fatigue Loading 
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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Copyright information

© Plenum Publishing Corporation 1982

Authors and Affiliations

  • M. Ya. Mikel'son
    • 1
  • I. V. Grushetskii
    • 1
  • L. V. Katinova
    • 1
  • V. P. Tamuzh
    • 1
  1. 1.Institute of Polymer MechanicsAcademy of Sciences of the Latvian SSRRiga

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