Thermal effect of laser ablation on the surface of carbon fiber reinforced plastic during laser processing

Although laser processing is widely used for many applications, the cutting quality of carbon fiber reinforced plastic (CFRP) decreases around the heat-affected zone (HAZ) during laser processing. Carbon fibers are exposed around the HAZ, and tensile strength decreases with increasing length of the...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2018-02, Vol.124 (2), p.1-7, Article 149
Main Authors: Ohkubo, Tomomasa, Sato, Yuji, Matsunaga, Ei-ichi, Tsukamoto, Masahiro
Format: Article
Language:English
Subjects:
Applied physics
Carbon fiber reinforced plastics
Carbon fiber reinforcement
Characterization and Evaluation of Materials
Condensed Matter Physics
Fiber lasers
Fluid dynamics
Heat affected zone
Kerf
Laser ablation
Laser processing
Lasers
Machines
Manufacturing
Materials science
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Simulation
Surfaces and Interfaces
Temperature distribution
Thin Films
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Summary:Although laser processing is widely used for many applications, the cutting quality of carbon fiber reinforced plastic (CFRP) decreases around the heat-affected zone (HAZ) during laser processing. Carbon fibers are exposed around the HAZ, and tensile strength decreases with increasing length of the HAZ. Some theoretical studies of thermal conductions that do not consider fluid dynamics have been performed; however, theoretical considerations that include the dynamics of laser ablation are scarce. Using removed mass and depth observed from experiments, the dynamics of laser ablation of CFRP with high-temperature and high-pressure of compressive gas is simulated herein. In this calculation, the mushroom-like shape of laser ablation is qualitatively simulated compared with experiments using a high-speed camera. Considering the removal temperature of the resin and the temperature distribution at each point on the surface, the simulation results suggest that a wide area of the resin is removed when the processing depth is shallow, and a rounded kerf is generated as the processing depth increases.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-018-1578-5