A combined experimental and analytical investigation of an adhesively bonded composite joint was conducted to characterize the fracture mode dependence of cyclic debonding. The system studied consisted of graphite/epoxy adherends bonded with EC 3445 adhesive. Several types of specimens were tested which provided the cyclic debond growth rate measurements under various load conditions: mode I, mixed mode I and II, and almost mode II. This study showed that the total strain-energy-release rate was the governing factor for cyclic debonding.

Issue Section:
Research Papers
Topics:
Composite materials, Adhesives, Epoxy adhesives, Epoxy resins, Fracture (Materials), Fracture (Process), Graphite, Stress
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Copyright © 1987
 by ASME
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