Tribology Properties of Fiber-Reinforced Polymer Composites

Abstract

The application spectrum of fiber-reinforced polymer composites is increasing rapidly in every sector of engineering. Fiber-reinforced polymer composites replace metals in various structural and non-structural components because of their properties including light weight, high specific strength, corrosion resistance and good thermal and insulation properties. However, any rubbing contact causes wear and tear of these composites. In various bearing applications, these composites face the problem of worn-out surfaces, which increases the maintenance cost of the developed component. Before application of these composites, analysis of tribological characteristics (friction and specific wear rate) of developed composites is necessary. This chapter presents the analysis of tribological properties of fiber-reinforced polymer composites. Tribological analysis includes the study of adhesive wear and study of coefficient of friction of the developed composite. A tribo-testing machine with a steel counterface is used to conduct experiments on how different input parameters affect tribological properties. The tribological performance of fiber-reinforced polymer composites depends on the percentage volume of fiber and polymer matrix, the orientation of fiber shape and the size of fiber. Poor wettability of reinforcing fiber with polymer matrix weakens the interfacial bond between the fiber and polymer matrix. Poor bonding between fiber and polymer debonds the fibers from the polymer matrix during sliding action, which increases the fracture and wear of developed composites.