Study of thermophysics during diamond drilling of fibreglass and carbon fibre-reinforced polymer composites

This paper examines thermophysics of the drilling process polymeric composite materials, such as carbon-fibre-reinforced plastics (CFRP) and fibreglass by tubular diamond drill bits. Features COMSOL Multiphysics engineering software package were used. We employed Fourier heat equations, which express intensity gain a mobile source in moving coordinate system. The research was performed using proprietary method modelling spatial thermal action upon polymer materials (fibreglass plastics) environment. A bit with diameter 10 mm two slots chosen model cutting tool. Solid plates thickness 5.5 made layered fibrous (fibreglass, plastic) used preform. As result computer calculations, we obtained temperature fields plastic during When studying behaviour plastics, maximum located. study revealed that reaches 413.6 448.7 K CFRP drilling, respectively. It shown distance transfer from edge hole into preform 6.42 6.40 for fibreglass, effects when developed environment allows complex analytical calculations temperatures induced to be simplified. In addition, its use prevents overheating assessing depth distribution inside formed different materials. These measures increase machining quality