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Research on Pre-loaded Composite Irradiated by Laser Beam

机译：激光束照射预装复合材料的研究

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This paper investigates failure behavior tests of T300/AG80 composite laminated specimens under tensile and compressive preload using a load holding device and laser irradiation from an Nd: YAG laser. By changing the magnitudes of the preload and the power densities of the laser, the effects of preload and laser power density on the time-to-failure of the specimens were observed. The response process of specimens was synchronized taken in using high-speed camera in experiment. The experimental results showed that tensile mechanical properties of T300/AG80 composite laminated specimens were obviously superior to ones in compression test. The relational expressions between the time-to-failure of specimens and pre-loads as well as with laser power densities were acquired through fitting experiment data. The time-to-failure reduced with the pre-load increasing, the relationship is approximating linear when the laser power density kept invariable. When the pre-load kept unchanged, the time-to-failure reduced as the laser power density increased. The relationship is approximating exponential. A basis for life prediction of structure mechanically loaded in either tension or compression during the irradiation by laser is provided by fitting expression.
机译：本文使用负载保持装置和来自Nd：YAG激光的激光照射来研究T300 / AG80复合层压试样的故障行为试验。通过改变预加载的大小和激光器的功率密度，观察到预载荷和激光功率密度对样本的失效时间的影响。在实验中使用高速相机采用了标本的响应过程。实验结果表明，T300 / AG80复合层压标本的拉伸力学性能明显优于压缩试验中的力量。通过拟合实验数据，获取试样和预载的时间和预负载的故障时间和激光功率密度之间的关系表达。由于预负载增加，失败减小，当激光功率密度保持不变时，关系近似线性。当预负载保持不变时，随着激光功率密度的增加，失效减小。这种关系是近似指数。通过拟合表达提供在通过激光照射期间张力或压缩期间的张力或压缩的结构的寿命预测的基础。

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