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<p>A hybrid of laser and gas-waterjet (HLGW) method was proposed for CFRP hole processing to improve the machining quality. This study investigated the effects of angles between waterjet and traverse direction on hole quality under three different radii, and the hole making mechanism of the HLGW. Compared to conventional gas-assisted laser (GAL) processing, the HLGW method reduced the HAZ on the front surface by 50.7%. As the radius increases, the thermal damage further decreases. Four zones of the hole edge shows different qualities under the HLGW processing method, due to the change of angle between the waterjet and the traverse direction. When the angle ranges from 135° to -135° (Zone 1), the HLGW processing performance is manifested by the neater cross section fracture and the smaller surface thermal damage. In other areas, due to the melting and evaporation of the resin, obvious carbon fiber shedding and breakage will occur. When the hole radius is 16&#xa0;mm, the taper angle in zone 1 is 3.62°, which is 62.9% smaller than the 9.76° in Zone 4 (45°–135°). The matrix recession in Zone 1 is significantly reduced, with vertical height changes within 40&#xa0;μm.</p>

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Hole processing quality of CFRP cut by the hybrid of laser and gas-waterjet

  • 期刊论文

  • 发表日期：

    2026年1月19日

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  • Deng Li,
  • Boshen Yu,
  • Chenxing Fan,
  • Baohua Chen,
  • Yong Wu,
  • Yanzhao Ma

摘要

A hybrid of laser and gas-waterjet (HLGW) method was proposed for CFRP hole processing to improve the machining quality. This study investigated the effects of angles between waterjet and traverse direction on hole quality under three different radii, and the hole making mechanism of the HLGW. Compared to conventional gas-assisted laser (GAL) processing, the HLGW method reduced the HAZ on the front surface by 50.7%. As the radius increases, the thermal damage further decreases. Four zones of the hole edge shows different qualities under the HLGW processing method, due to the change of angle between the waterjet and the traverse direction. When the angle ranges from 135° to -135° (Zone 1), the HLGW processing performance is manifested by the neater cross section fracture and the smaller surface thermal damage. In other areas, due to the melting and evaporation of the resin, obvious carbon fiber shedding and breakage will occur. When the hole radius is 16 mm, the taper angle in zone 1 is 3.62°, which is 62.9% smaller than the 9.76° in Zone 4 (45°–135°). The matrix recession in Zone 1 is significantly reduced, with vertical height changes within 40 μm.