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Innovative Repair Technique For Polymer Composite Laminates


Title: Innovative Repair Technique For Polymer Composite Laminates

Authors: Mohammad B. Uddin, Shashwata Chakraborty, Ajit D. Kelkar

DOI: 10.33599/nasampe/s.21.0610

Abstract: During the last few decades, the use of lightweight composite materials has increased dramatically. They are widely used for a variety of applications including aerospace, automotive, wind turbine blades and numerous others. Usually, these composites are exposed to various types of loads like axial, flexural, fatigue, impact, etc. Out of these loadings, the impact loading causes severe damage to the composite laminate which may prove catastrophic. Thus, when laminates are damaged, there needs to be an effective methodology to repair these damages. Composite repairs are normally considered as a cumbersome process. Hence, this paper proposes a novel repair technique to address this issue. This paper focuses on the study of composite laminates subjected to impact loading, and then replacing the damaged area with various shapes of cutouts to facilitate the load transfer after repair and reduce the loss of compressive strength significantly in the process. Composite laminates of carbon fiber with epoxy resin were fabricated using Heated Vacuum-Assisted Resin Transfer Molding (HVARTM) method. The laminates were subjected to low-velocity impact loading. The resulted damage areas were cut using a water jet cutter and replaced with innovatively designed shapes of cutouts. The compressive strengths of the repaired laminates were compared with undamaged and impact damaged laminates.

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Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000610

Pages: 9

Price: FREE

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