Experimental Investigation of Drilling Parameters on Composite Materials

Composite materials are light weight, remarkable strong and relatively inexpensive. Now these materials are being used for many automotive applications. It is difficult to machine hemp fiber composite materials with high efficiency to yield good quality products. Conventional drilling with twist drilling still remains one of the most economical and efficient machining process for Hole making as well as for riveting and fastening structural assemblies in the aerospace and automotive industries. The present work investigates the effects of the drilling parameters, speed and feed, on the damage factor in drilling composites glass, hemp & sandwich fibers with different fiber volume fractions (i.e10%,20%&30%). Three speeds, four feeds and three volume fractions are used in this study. The objective of this paper is to decrease the damage factor of composite materials with different fiber volume fractions, by varying drill parameters such as speed and feed. The composite material having the size of 100503 mm and using the drill diameter as 6 mm.