Secondary Manufacturing Techniques for Polymer Matrix Composites

This chapter summarises the various aspects, issues, challenges and progress in the context of secondary manufacturing of polymer matrix composites (PMCs). Conventional drilling is by far the most extensively used secondary manufacturing process. However, the process is not very conducive when the materials to be machined are composite materials. De-lamination coupled with tool wear and damage to the chosen polymer, to name a few, are few of the major challenges associated with drilling of PMCs. The quality of the drilled hole to a great extent is influenced by the process parameters used, such as (1) drill point geometry, (2) spindle speed, (3) feed rate and (4) tool material. In this chapter, the intrinsic influence of the controlling parameters on drilling performance of PMCs is presented and discussed.. The process outcomes, such as (1) drilling-induced forces and damage, (2) surface quality of the drilled hole and (3) chip formation characteristics, are presented and adequately discussed with the primary intent of assessing the drilling behaviour of PMCs.