Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites-Reference-Cited by-同舟云学术

Effect of Scarf Repair Geometry on the Impact Performance of Aerospace Composites

Published:2023-05-20 Issue:10 Volume:15 Page:2390
ISSN:2073-4360
Container-title:Polymers
language:en
Short-container-title:Polymers

Author:

Shankar Sridharan Vijay¹^ORCID,Idapalapati Sridhar¹²^ORCID

Affiliation:

1. Rolls-Royce @ NTU Corporate Laboratory, Nanyang Technological University, Singapore 639798, Singapore

2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore

Abstract

This experimental study investigates the effect of scarf geometry in restoring the impact response of scarf-patched 3 mm thick glass-fiber reinforced polymer (GFRP) matrix composite laminates. Traditional circular along with rounded rectangular scarf patch configurations are considered 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 the repair patch which includes matrix cracking, fiber fracture, and delamination, and no discontinuity in the adhesive interface was witnessed. When compared with the pristine samples, the top ply damage size of the circular repaired specimens are 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 a more suitable choice of repair approach under the condition of a 37 J low-velocity impact event even though the global force-time response is similar.

Funder

National Research Foundation (NRF) of Singapore

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

Link

https://www.mdpi.com/2073-4360/15/10/2390/pdf

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