We report on the laser cutting of carbon fiber reinforced thermo-plastic (CFRTP) and carbon fiber reinforced plastic (CFRP) with a cw IR fiber laser (average power: 2 kW). CFRTP and CFRP are a composite material which contains carbon fibers and binding plastics. A well-defined 2D laser cutting of CFRTP and CFRP flat plates which were free of debris around the groove was performed by the laser irradiation with a fast beam galvanometer scanning on a multiple-scan-pass method. The area of laser-induced damages in the samples was observed by microscopic X-ray Computed Tomography. Laser cutting with a high speed beam scanning exhibits a clean top and an excellent sidewall quality along with a negligible heat affected zone. In addition, the laser cutting of CFRP for a three-dimensional molded sample was performed with a five-axis laser cutting machine.
The dual beam of cw-350 W single-mode near-IR fiber laser and ns-pulsed-35 W UV laser were used in the experiments
for cutting. The laser beam on the sample surface was scanned with a galvanometer scanner and focused with the f-theta
lens of 400 mm focal length for IR and UV laser irradiations. A prototype remote scanner head for the multiple laser
irradiations has been developed for a high-quality and high-speed laser processing of carbon fiber reinforced plastics
(CFRP). In this paper, we report on the laser trepanning of circular patterns on CFRP.
We report on the laser cutting of carbon fiber reinforced thermo-plastics (CFRTP) with a cw IR fiber laser (single-mode
fiber laser, average power: 350 W). CFRTP is a high strength composite material with a lightweight, and is increasingly
being used various applications. A well-defined cutting of CFRTP which were free of debris and thermal-damages
around the grooves, were performed by the laser irradiation with a fast beam galvanometer scanning on a multiple-scanpass
method.
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