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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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In the laser processing of carbon fiber reinforced thermoplastics (CFRTP), we evaluated the interaction between the laser and the material based on parameters such as wavelength (355, 532, and 1064 nm), power, and scanning speed. We observed that shorter wavelengths increased the photon energy, which boosts energy absorption in the PA6 polymer, subsequently influencing the processing quality and outcomes. When the energy per pulse was consistent, the kerf width at 1064 nm exceeded that at 355 nm; however, the heat-affected zone (HAZ) was smaller. Despite the lower energy requirements for penetration, the uniformity of the fiber cross-section was reduced. At 532 nm-positioned between 355 and 1064 nm-the carbon fibers exhibited greater optical absorption than at 1064 nm, whereas the polymer reactivity was lower than that at 355 nm. This wavelength allowed for efficient penetration processing with minimal energy, reduced HAZ, and maintained a fiber cross-sectional uniformity similar to that at 355 nm. Because all three wavelengths were absorbed within tens of nanometers of the carbon surface, the heat transfer mechanisms across the carbon fibers remained consistent. The optimal processing quality was achieved by balancing high carbon fiber absorption with low polymer absorption, a condition best met at 532 nm, facilitating high-quality processing with minimal thermal impact.
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ABSTRACT
1. 서론
2. 실험 방법
3. 실험결과 및 고찰
4. 결론
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