A mesoscopic method is developed to analyze the temperature field of composite materials under laser radiation based on their meso-structures. Laser energy coupling to fibers and matrix are characterized by different absorption coefficients, and multi-phase heat transfer process in composites is solved by the lattice Boltzmann method (LBM). The temperature field of carbon fiber reinforced polymer(CFRP) composites with laser intensities ranging from 100 W/cm2 to 500 W/cm2 is calculated, and the results reveal that the temperature distribution of composites is closely related to their meso-structures.
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