Effect of Start Time To Pressure and Powder Content on Single Lap Joint Shear Strength of CFRP/Al using Aluminum Powder /Epoxy Adhesive

When adhesively bonding Al/CFRP Single Lap Joint, a good bond performance both on the strength and stiffness is important for CFRP bonded with aluminum structures. The objectives of the research were to: Investigate the effect of starting time to pressure and Al powder content to shear strength of Al/CFRP Single lap joints with Al/epoxy adhesive; Observe the fracture characteristics Al/CFRP SLJs with Al powder/epoxy adhesive by using macro-photograph and SEM. Single lap joint was prepared for Aluminum and CFRP using Al powder/Epoxy adhesive with 0.5 mm adhesive thickness, 100 mm adherend length, 25 mm adherend width, 3 mm adherend thickness and 25 mm overlap length. Shear strength test was conducted for the single lap joints with variation in strat time to pressure and percent of Aluminum powder content in epoxy adhesive. The best shear strength results for analysis of Al/CFRP SLJs were found for 20 minutes start time to pressure and 12.5% Al powder conten