三層構造飛翔体のレーザー加速によるスペースデブリ模擬衝突試験

概要

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We examined hyper-velocity impact tests for CFRP (Carbon Fiber Reinforced Plastics) laminates using laser accelerated multi-layered flyers. The multi-layered flyer consists of three layers; aluminum (Al), polyethylene (CH) and Al. The third layer of the flyer can be accelerated to hyper-velocity by irradiation of a high-power pulsed laser. The thickness of each layer was designed on the basis of the results of numerical analyses. The velocity of the flyers measured in experiments was more than 23km/s using a 30J laser beam. The damages and fracture, such as crater, delamination, spallation and fiber breakage, were observed in the CFRP target after the experiments. It is considered that, in the three-layered flyer impact tests, hyper-velocity damage and fracture occurred according to a series of fracture processes; (1) spallation, (2) crack propagation by shear, (3) fiber kinking and breakage. These processes are similar to those of the Al mono-layered flyer impact tests.
社団法人日本航空宇宙学会の論文
2003-12-05