Improving Strength Performance of Adhesively Bonded Single-lap Composite Joints

Abstract

The present study examines a new reinforcing method for glass fiber-reinforced composites using inter-adherend glass fibers that get through the composite adherend like a pin. Two types of inter-adherends were used. One is the fiber used like pins (type B), and the other is the fiber pin whose edges were bent and stuck on the surface of the adherend (type C). Static tensile test was performed for both types of joints and for joints without inter-adherend fibers (type A). Experiments were performed for different overlap lengths in accordance with ASTM standards. The results show that ultimate static strength of single-lap joints was found to be significantly increased by using the inter-adherend fibers. In addition, in case of type A, the failure is catastrophic. However, in types B and C, the joint does not fail catastrophically.

Keywords

glass fibers strength adhesion joints/joining.

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