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为探究激光辐照角度对激光定向能毁伤效能的影响,开展激光辐照角度对碳纤维复合材料的损伤阈值研究。通过傅里叶热传导方程理论计算了复合材料受激光辐照时表面的温升曲线,发现随着激光辐照角度增大,激光辐照区域中心点位置的最高温度逐渐降低,且液-固相变凝固时间缩短,复合材料损伤难度增大。实验研究表明,随着激光辐照角度增大,复合材料表面烧蚀半径逐渐增加,烧蚀深度逐渐减小,损伤阈值逐渐提高。这是由于激光辐照角度增大导致相同能量的激光照射光斑面积增大,复合材料表面的激光功率密度降低。同时,由于损伤形貌增大,辐照中心区域温度受周围较低温度的材料导热影响,最高温度也逐渐降低,从而使复合材料损伤阈值增大。
Abstract：To investigate the effect of laser irradiation angle on the damage efficiency of laser-directed energy,this paper researches the damage threshold of carbon fiber reinforced polymer/plastic under different laser irradiation angles.By using the Fourier heat conduction equation,we calculate the temperature on the surface of the composites under laser irradiation.The temperature rise curves show that the peak temperature at the center of the laser irradiation area decreases with the laser irradiation angle increasing.The liquid-solid phase change solidification time shortens,making it more difficult to damage the composites.Experimental research shows that the ablation radius on the surface of the composites gradually increases with the increase of the laser irradiation angle.Moreover,the ablation depth decreases gradually,and the damage threshold improves gradually.This is because of the increase in laser irradiation angle spot for the same amount of energy,resulting in a decrease in the laser power density on the surface of the composites.At the same time,due to the increase in damage morphology,the temperature in the irradiation center area is influenced by the heat conduction from the surrounding lower-temperature materials,causing the maximum temperature to also gradually decrease,thereby increasing the damage threshold of the composites.
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基本信息:
中图分类号:TB33;TN249
引用信息:
[1]张银福,王瀚,黄伟,等.激光辐照角度对碳纤维复合材料损伤阈值的影响[J].应用激光().
基金信息:
嵩山实验室预研项目(YYYY072022004)
2026-08-28
2026-08-28
2026-08-28