阵列激光辐照碳纤维复合材料温度场分析  

Temperature⁃Field Analysis of Carbon⁃Fiber Composites Irradiated via Array Laser

作　　者：吴静 田明[1] 王菲[1,2] 张承双[3] 包艳玲[3] 阮英波[3] 苏忠民 Wu Jing;Tian Ming;Wang Fei;Zhang Chengshuang;Bao Yanling;Ruan Yingbo;Su Zhongmin(College of Optoelectronic Engineering,Changchun University of Technology,Changchun 130022,Jilin,China;Zhongshan Research Institute,Changchun University of Technology,Zhongshan 528400,Guangdong,China;Xi'an Aerospace Composite Materials Research Institute,Xi’an 710065,Shaanxi,China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]长春理工大学中山研究院,广东中山528400 [3]西安航天复合材料研究所,陕西西安710065

出　　处：《中国激光》2024年第14期61-71,共11页Chinese Journal of Lasers

基　　金：国家自然科学基金-航天先进制造研究联合基金(U1937201);吉林省重点研发计划(20200401100GX)。

摘　　要：阵列激光辐照技术是实现碳纤维复合材料(CFRP)快速高效固化的有效办法,辐照区域温度场的均匀性是影响构件质量的重要因素,因此对温度场均匀性进行量化分析具有重要意义。基于阵列激光辐照原理建立了CFRP的有限元温度场分析模型并完成了实验验证,通过计算辐照区域内温度场的均匀性指数,分析了不同激光光斑间距、不同激光光斑尺寸和不同激光功率条件下温度场的变化趋势。结果表明:在单个激光光斑边长为50 mm的条件下,当激光光斑中心间距从45.0 mm增加至55.0 mm时,热影响区面积逐渐增大,均匀性指数先增大后减小,当光斑中心间距与光斑边长相等时,均匀性指数最高为0.95;当激光光斑边长从40 mm增加至60 mm时,热影响区面积逐渐增大,均匀性指数从0.92增加至0.98;当激光功率从50 W增加至250 W时,热影响区面积几乎不变,均匀性指数从0.97减小至0.93。Objective Laser irradiation is a rapid, efficient, non-contact, and high-precision method that has been widely used in carbon-fiber composite processing. Using laser technology to heat carbon-fiber composites is crucial for improving productivity. To enhance the precision, quality, and industrial applicability of carbon-fiber composite processing while minimizing damage, a laser-processing technology that can achieve larger processing areas and higher processing quality must be developed. Array-laser irradiation technology is an effective approach for curing carbon-fiber composites rapidly and efficiently. The temperature-field uniformity in the irradiation region is an important factor affecting the quality of the components and thus must be analyzed quantitatively. Based on the principle of array-laser irradiation, this study establishes a finite-element temperature-field analysis model for carbon-fiber composites, which is then verified based on experiment. Additionally, the effects of spot spacing, spot size, and laser power on the temperature field of the material are evaluated based on the uniformity index and the maximum temperature difference. These results serve as an important reference for optimizing laser-processing parameters and improving the heating uniformity and efficiency of materials.Methods The material used in this study is an orthogonal woven laminate of CF/PPS, which is modeled as a macroscopic equivalent homogenized model to simplify the calculations. The geometrical and thermodynamic properties of the material are modeled using the COMSOL simulation software. A 980 nm continuous semiconductor laser is used to irradiate the material, obtain the overall warming pattern of the material target plate, calculate the overall temperature-rise effect on the material plate after the laser arrives at the target, and calculate the temperature-field distribution on the surface of the laminate when it is irradiated by the laser. An arraylaser irradiation control system is constructed to regulate and co

关 键 词：碳纤维复合材料 激光辐照 有限元 温度场 均匀性评价 

分 类 号：TN249[电子电信—物理电子学]