Fatigue Damage Evaluation through Stiffness Measurements in Boron-Epoxy Laminates

  • O'brien T
  • Reifsnider K
  • 14


    Mendeley users who have this article in their library.
  • 87


    Citations of this article.


Stiffness reductions, resulting from fatigue damage, were measured for unnotched [{+/-}45]s, [0/90] s, and [0/90/ {+/-}45 ] s boron/epoxy laminates. Deg radation in the various in-plane stiffnesses (Exx, Byy, Gxy) were measured using a combination of uniaxial tension, rail shear, and flexure tests. An attempt was made to predict stiffness loss at failure from a secant modulus criterion. Damage growth and stiffness loss were load-history dependent, hence, the secant modulus criterion is not a valid criterion for general application.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • T. Kevin O'brien

  • Kenneth L. Reifsnider

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free