摘要
为了研究激光辐照过程中芳纶纤维/环氧和碳纤维/环氧两种复合材料吸收特性的变化情况,采用双积分球-光电管测试系统和对实验回收样品进行微观分析的方法,得到了两种复合材料在1.319μm连续激光辐照过程中吸收率的变化结果。在烧蚀前,材料的吸收率随激光功率增大而缓慢减小,芳纶纤维/环氧材料从0.6减小到0.55,碳纤维/环氧材料从0.85减小到0.8;当材料发生烧蚀时,芳纶纤维/环氧材料的吸收率迅速增大,而碳纤维/环氧材料的吸收率无明显变化。结果表明,烧蚀对芳纶纤维/环氧材料的吸收特性影响较大,对碳纤维/环氧材料无明显影响。
The absorption characteristics of polyaryl amide-fibers/epoxy and carbon-fibers/epoxy composite radiated by continuous wave laser beam at of 1. 319μm were obtained by means of double integrating spheres-photodiode system and microanalysis of recovery specimen. When laser power intensity increases before composite ablation, the absorptive of both the composites slowly decreases. It changes from 0.6 to 0.55 for polyaryl amide-fibers/epoxy composite and from 0.85 to 0.8 for carbon-fibers/epoxy composite. When ablation appears on the composite,the absorptivity of polyaryl amide-fibers/epoxy composite rapidly increases. However, it change little for carbon-fibers/epoxy composite. The results show that ablation has obvious effect on the absorption characteristics of polyaryl amide-fibers/epoxy composite and has little effect on carbon-fibers/epoxy composite.
出处
《激光技术》
CAS
CSCD
北大核心
2009年第6期590-592,596,共4页
Laser Technology
关键词
激光物理
吸收特性
双积分球-光电管
微观分析
复合材料
laser physics
absorption characteristics
double integrating spheres-photodiode
micro-analysis
composite material
