Influence Of Hygrothermal Aging On The Quasi-Static And Impact Behavior Of Single Lap Joints Using Cfrp And Aluminum Substrates

The use of adhesive to bond composites in vehicles continues to increase. Due to hygrothermal conditions, both adhesive and composite properties can be altered, making the mechanical behavior of a joint unpredictable. The novelty of this work is the assessment of the behavior of joints manufactured using composite and aluminum substrates tested under quasi-static and impact conditions in the following states: unaged, hygrothermally aged, and dried after hygrothermal aging. A significant reduction of failure load was registered for composite joints (quasi-static and impact) after hygrothermal aging. Joints dried after aging achieved a recovery in the failure load of quasi-static tests.