2 - Joining techniques for polymer matrix composites

Abstract

Nowadays the application of polymer matrix composites (PMCs) is increasing in various engineering fields. The secondary processing of fiber-reinforced polymer composites through multiple techniques is being studied for better mechanical and thermal properties of the fabricated products. Development of natural/synthetic fiber-based polymer composites necessitates joining operations to aid the eco-friendly characteristics in sustainable products. The joining turns into an essential and vital space to join exclusively prepared composite parts into a usable assembly. Design of the overlap area plays a vital role in defining the performance of the load-bearing behavior of bonded composite specimens. The bonding techniques for the polymer-based composites are broadly classified as conventional and advanced joining techniques. Adhesive joints (permanent joint) and mechanical joints (temporary joint) comes under the class of conventional joining techniques. All the fusion bonding techniques are called advanced joining processes. Fusion bonding techniques have received significant attention due to their less manufacturing time and labor cost in comparison to conventional techniques. In this chapter, various types of fusion bonding techniques such as hot plate welding, ultrasonic welding, microwave joining, and friction stir welding and the effects of welding parameters on the quality of the joint have been studied and discussed.