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ABSTRACT
In this study, failure behaviors of edge-notched composite plates which were repaired with using patch and adhesive were investigated experimentally and numerically. The composite plates had a (0°/90°)3 anti-symmetric stacking sequence; the patches were obtained from the same plates and were bonded using an epoxy-based adhesive. The effects of the geometry of the notch were investigated using U-, V-, and square-shaped notches. We varied the notch geometry, investigated single-lap and double-lap repairs, and varied the patch fiber-stacking sequence. Simulations were carried out to analyze the three-dimensional failure progression using ANSYS. The failure loads of the repaired plates increased by 170–304% for single-lap repairs and 240–476% for double-lap repairs compared with the notched plates. The simulated and measured failure loads were in agreement within 0.2–23.6%.
Acknowledgment
We thank Dicle University for providing composite materials and adhesives.
Funding
This work was supported by Dicle University Scientific Research Projects Unit (DUBAP) [grant number 13-MF-109].