Drilling Analysis of Natural Fiber-Reinforced Polylactic Acid Composites Fabricated by Hot Compression Moulding

Abstract

In the present study, bamboo fibre/polylactic acid (PLA) composites have been fabricated by hot compression moulding using film stacking method. The drilling behaviour of the developed composites has been experimentally investigated. The influence of three different input parameters such as feed (8, 16, and 22.4 mm/min), spindle speed (710, 1400, and 2000 RPM) and drill geometry (8-facet, dagger, and slot drill) on the drilling induced forces (thrust force and torque) has been studied. The experimental results showed that the drilling induced forces decreases with an increase in the spindle speed and increases with an increase in the feed of the drill bit. It was also observed that the forces induced during drilling with the slot drill bit are low as compared to the 8-facet and dagger drill bit.