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Evidencing of the Damage Due to a Symmetrical, Alternate, Cyclical and Harmonic Stress, Measuring the Internal Damping in a Carbon Fiber Structure Made of Epoxy-Resin

  • M. Nouillant
  • C. R. Rakotomanana
  • P. Miot
  • M. Chapuis

Abstract

Specimens consisting of thin tubes made of carbon-epoxy symmetrical laminate with various wiring orentations have been submitted to an harmonic torsional test for a wide range of stress level. As the shear stress τ exceeds a given threshold τmp, Δw/w. The so called damage depends on the maximum stress τmax experienced by the material (τ max> τmp).A decomposition in the laminate axes gives normal stresses σl(longitudinal), σt(transverse) and longitudinal shear σlt. The dependence of damage on σ l, σ t, σlt is discussed and seems to be a function of σt only, i.e: σt<(σ t)max

Keywords

Carbon Fiber Fiber Orientation Thin Tube Longitudinal Shear Matrix Modulus 
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

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • M. Nouillant
    • 1
  • C. R. Rakotomanana
    • 1
  • P. Miot
    • 1
  • M. Chapuis
    • 1
  1. 1.Université de Bordeaux / Domaine UniversitaireTalence CedexFrance

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