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<p>This study presents a comparative investigation of conventional laser beam percussion drilling and ultrasonic vibration-assisted laser beam percussion drilling for 4.5-mm-thick Al/SiC MMC. Laser beam drilling experiments were conducted using a pulsed Nd:YAG laser, and the effects of process parameters were evaluated on key response parameters (hole circularity and taper), using a central composite design. In UV-assisted laser drilling, a transverse vibration (32&#xa0;kHz, 4.5&#xa0;μm) was applied to the workpiece. Hole top circularity and hole taper served as quality metrics. A multi-objective genetic algorithm (GA) was employed to determine optimal process parameters. The result demonstrates that ultrasonic vibration significantly enhances drilling performance. Under optimized conditions, the hole circularity improvement is 6.61%, while the hole taper improvement is 37.36% compared to the non-vibration condition. These findings establish ultrasonic-assisted laser drilling as an effective technique for precision machining of metal matrix composites in advanced engineering applications.</p>

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Experimental Analysis of Ultrasonic Vibration-Assisted Laser Beam Percussion Drilling of 4.5-mm-Thick MMC

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Anurag Yadav,
  • Avanish Kumar Dubey,
  • B. N. Upadhyaya

摘要

This study presents a comparative investigation of conventional laser beam percussion drilling and ultrasonic vibration-assisted laser beam percussion drilling for 4.5-mm-thick Al/SiC MMC. Laser beam drilling experiments were conducted using a pulsed Nd:YAG laser, and the effects of process parameters were evaluated on key response parameters (hole circularity and taper), using a central composite design. In UV-assisted laser drilling, a transverse vibration (32 kHz, 4.5 μm) was applied to the workpiece. Hole top circularity and hole taper served as quality metrics. A multi-objective genetic algorithm (GA) was employed to determine optimal process parameters. The result demonstrates that ultrasonic vibration significantly enhances drilling performance. Under optimized conditions, the hole circularity improvement is 6.61%, while the hole taper improvement is 37.36% compared to the non-vibration condition. These findings establish ultrasonic-assisted laser drilling as an effective technique for precision machining of metal matrix composites in advanced engineering applications.