Investigation of patch hybridization effect on the composite patch repair of a cracked aluminum plate: A pragmatic approach

ABSTRACT

A distinct perspective of using the hybrid composite patches with varying stiffness for repair of a cracked Al 6061-T6 plate and its influence on repair performance is presented. The hybrid composite patches of carbon and glass fibers are considered. The volume fraction of constituents is selected in accordance with the required stiffness ratio. Numerical analysis is performed to evaluate the J-Integral, reduction factor of SIF and interfacial stresses. Patch hybridization has restricted the J-Integral and shown positive impact on interfacial stresses at the edges. The obtained results indicate that the hybrid composite patches have ensured alternative and effective repair solution.

KEYWORDS:

• Composite patch repair
• hybrid composite
• micromechanical model
• J-integral
• interfacial stresses