Abstract
Thermal damage of aluminum honeycomb panel (AHP) irradiated by continuous laser is studied in this paper. Firstly, facula radius and power density caused by defocusing are considered to model thermal damage of continuous laser. An accurate simulation model is established to calculate the shape of a damage hole. The relative errors of entrance hole and exit hole are less than 15 percent. The simulation results are in good agreement with the experimental results. Then, the effects of laser parameters on damage are experimentally investigated, and the damage rule of AHP irradiated by continuous laser is obtained. The experimental results show that edge diameters of entrance hole and exit hole increase with the use of higher laser power and smaller incident angle. A larger defocusing amount decreases edge diameter of entrance hole and increases the diameter on the edge of exit hole.
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