Abstract
In this work, a novel laminated polyester composite that contains waste tire rubber particles and glass fiber is developed. This composite is expected to possess better mechanical and physical properties, than other conventional polyester composites which consist of CaCO3 and glass fiber. This novel composite can be used in car bodies and in the aviation industry. Flat laminated specimens from both composites are prepared by hand layup. Tensile and impact testing are done to evaluate and compare the mechanical properties of these composites. An experiment is done to study the damage that can occur to the novel composite when drilling holes which can be used for joining composite laminates with other parts. Twelve trials were made to reduce the damage by better selection of the drilling conditions. Peel up and push out delamination factors are calculated to investigate the damage. Digital optical microscope is used to investigate the fracture surface of broken specimens and the nature of drilling damage. Comparison between novel and conventional composites shows an improvement by approximately 47% and the density of the new composite decreases by 8%. The optimum drilling cutting speed is approximately 1150 rpm which gives the least delamination factor at the front and back of specimen.
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