Fatigue tests monitoring on carbon/epoxy composites

  • Fatigue testing (3 Hz) with R=0,1 or 0,5 and stresses equal to 60-80 % of ultimate tensile stress on quasi-isotropic (0, 45, 90) carbon-epoxy specimens
  • An acoustic emission system (VALLEN AMS3) followed the progression of damage throughout the test
  • C- Scan showed the evidence of delamination from the level of transmission on specimens borders
  • Edge replication technique allowed us to discern the presence of delaminations and cracks on the different plies
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