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Due to the development of technology and high-tech industrialization, various processing technologies requiring precision are developed and the high degree of precision is further required. Therefore, laser-aided manufacturing has been applied in many engineering fields due to many advantages. However, without understanding fundamental interaction characteristics, its advantages cannot be fully utilized. In this study, the interaction between laser and material is investigated by laser process applied with the different repetition. The wavelength of IR laser used in this experiment is 1064nm. the parameters of IR laser are laser power (20 W), repetition rate (105 kHz, 200 kHz), pulse duration (20 ns) and these parameters are constant during the laser drilling. In addition, the experiment is performed by increasing the laser total energy. For the component analysis of specimen and result of experiment, we use scanning electron microscope (SEM) and energy dispersive X-ray (EDX). And then the result of the Heat affected zone, Material removal zone and Burr is measured. Through this study, it seems that the interaction characteristic is controlled by repetition rate.

Experimental Investigation of Infrared Laser Drilling Process Applied with Different Repetition Rate on Ni-Au Coated BeCu