Abstract
A significant improvement of drilling efficiency is observed in laser drilling thin steel plate with double-pulse laser technique. The laser used in the experiment is a 1047 nm Q-switched laser with pulse duration of 21 ns and interpulse separation of 52 ns. The maximum ablation rate of double-pulse is about 30 times higher than that in the conventional single-pulse drilling at room temperature. The enhancement ratio of ablation efficiency of double-pulse to single-pulse with the laser energy density, repetition rate, thickness of the samples and the ambient gas pressure is studied. These results can be important for practical applications in efficient laser drilling.
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Wang, X. D., Yuan, X., Wang, S. L., Liu, J. S., Michalowski, A., & Dausinger, F. (2008). Efficient laser drilling with double-pulse laser processing. In Advanced Design and Manufacture to Gain a Competitive Edge: New Manufacturing Techniques and their Role in Improving Enterprise Performance (pp. 759–766). CSREA Press. https://doi.org/10.1007/978-1-84800-241-8_76
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