Evaluation of Composite Method Repair of a Cracked Plate

Abstract

This work evaluates the performance of composite patch repairs for cracked aluminium plates by examining various parameters including patch shape, height, thickness, the influence of stress on the patch, and adhesive thickness. Through a comprehensive analysis of these factors, along with the properties of adhesives and composites, the study aims to enhance the understanding of their impact on repair efficiency. The findings are intended to provide valuable insights for designers of bonded composite repairs, facilitating better predictions of the fatigue life of repaired structures. This study investigates the effectiveness of crack repairs by analyzing the stress intensity factor at the crack front as a key fracture criterion. A comprehensive examination of various repair parameters is conducted to assess their impact on repair efficiency. Utilizing Finite element method numerical simulations in ABAQUS, the research evaluates the performance of bonded composite joints under different conditions. The findings from these simulations are compared to experimental data, providing valuable insights into the fatigue life of repaired structures. This work aims to enhance the understanding of repair methodologies and their implications for structural integrity in engineering applications.