Abstract
Composites have gained wide acceptance because of their unique properties. Drilling is a prerequisite operation for composite materials to form assemblies. Poor hole quality can affect tensile strength, structural integrity in long-term usages. The parameters to predict machinability of a good-quality hole are lower specific cutting energy, minimum drilling-induced damages like peel up at entrance and push out delamination. In this article, effect of different tool geometries, speeds and feeds are investigated during drilling on a composite plate having different chemical composition for specific cutting energy, peel up at entrance and push out delamination. A series of experiments was established based on the techniques of Taguchi. Statistical tools like signal-to-noise ratio, the analysis of variance and regression analysis are used to investigate effect on specific cutting energy and delamination. Conclusions show that proper selection of tool and cutting parameters influence specific cutting energy and delamination.
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