Study of joining different types of polymers by friction stir welding

Abstract

Friction stir welding has been successfully employed for various types of polymers. The application of external heat source is beneficial in joining different types of polymers and fiber reinforced polymers by FSW. External heating elements such as heated shoe, viblade, hot air gun have been used to assist the Friction Stir Welding Process. Polymers with low melting point temperatures were easily joined while those with higher melting point temperatures either formed weaker joints or posed difficulty while welding. The Friction stir welding process also applies well to reinforced plastics. Joints of good tensile strength quality factor, flexural strength and shear strength are obtained. This paper reviews the work done with respect to joining of different types of polymers and fiber reinforced polymers and concludes by suggesting further scope for research in friction stir welding of polymers and polymer-hybrid composite materials.