Abstract
Over a past few decades Composite Material has gained vast structural applications in many domains because of its high stiffness to weight ratio and other tailor-made properties. Now a day’s polymer matrix composites are excessively used in the structures of aerospace devices and automotive parts. Assembly of these structures require many holes to be made for fastening. These discontinued locations in the structure are the primary locations for failure of the structure because of stress concentration effect. Therefore, a study is made on effect of drilling a hole in a glass fibre reinforced composite before and after post curing with square inbuilt patches at the hole just below the outermost layers in the stacking sequence on the strength of the laminate. Drilling hole after room temperature curing and subsequent post curing the laminate at 140 °C for 2 h results in better strength for a laminate with discontinuity. Also, infrared post curing is more effective than microwave post curing.
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