Shankar, S.V.; Idapalapati, S. Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites. Polymers2023, 15, 2390.
Shankar, S.V.; Idapalapati, S. Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites. Polymers 2023, 15, 2390.
Shankar, S.V.; Idapalapati, S. Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites. Polymers2023, 15, 2390.
Shankar, S.V.; Idapalapati, S. Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites. Polymers 2023, 15, 2390.
Abstract
This experimental study investigates the effect of scarf geometry in restoring the impact response of scarf patched 3 mm thick glass-fibre reinforced polymer (GFRP) matrix composite laminates. Traditional circular along with rounded rectangular scarf patch configurations considered as repair patches. Experimental measurements revealed that the temporal variations of force and energy response of the pristine specimen are close to that of circular repaired specimens. The predominant failure modes were witnessed only in repair patch which include the matrix cracking, fibre fracture, delamination and no discontinuity in adhesive interface was witnessed. When compared with the pristine samples, the top ply damage size of the of the circular repaired specimens is larger by 9.91 %, while that of the rounded rectangular repaired specimens is larger by 434.23 %. The results show that circular scarf repair is more suitable choice of repair approach under the condition of 37J low-velocity impact event even though the global force-time response is similar.
Keywords
Scarf patch; Film adhesive; Secondary bonding; Impact loading; Failure analysis
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
