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黄雪刚,黄洁,文雪忠,李晶,姜林,张军,邢英丽,柳森.TiB2基陶瓷复合材料超高速撞击损伤行为研究[J].稀有金属材料与工程(英文),2017,46(10):3081~3090.[Xuegang Huang,Jie Huang,Xuezhong Wen,Jing Li,Lin Jiang,Jun Zhang,Yingli Xing and Sen Liu.Investigation on Damage Behavior of TiB2-based Ceramic Composites under Hypervelocity Impact[J].Rare Metal Materials and Engineering,2017,46(10):3081~3090.]
Investigation on Damage Behavior of TiB2-based Ceramic Composites under Hypervelocity Impact
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Received:July 18, 2016  Revised:November 14, 2016
DOI:
Key words: TiB2-based ceramic composites  hypervelocity impace  damage behavior  debris cloud  shield configuration
Foundation item:国家自然科学基金资助(项目号51502338)
Author NameAffiliation
Xuegang Huang,Jie Huang,Xuezhong Wen,Jing Li,Lin Jiang,Jun Zhang,Yingli Xing and Sen Liu  
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Abstract:
      In order to improve the protective capability of spacecraft shielding configuration for hypervelocity impact of space debris, the Whipple-based shield configuration within the thin-plate bumpers of TiB2-based ceramic composites were manufacture(i.e. the monolayer bumper of ceramic plate, the double-layer bumper of ceramic/metal plate), the hypervelocity impact experiments were carried out on two-stage light-gas gun to compare the above novel bumpers with the typical aluminum alloy bumper under the impact velocity of 2.88 km/s ~7.32 km/s. The perforation characteristics of front bumper, the damage characteristics of rear wall and the structural characteristics of debris could were studied by combining the SEM fracture morphology and EDS elements distribution, especially, the relationship among the material properties and structure features of various bumpers, the formation process of debris clouds, the cratering mechanics of rear wall was discussed seriously. The study results showed that the monolayer ceramic bumper can effectively smash the projectile to smaller pieces in debris cloud, due to the impact kinetic energy of projectile fragments was distributed into the smaller particles of expanded debris cloud, the protective capability of the monolayer ceramic bumper exceed the typical aluminum alloy with equal areal density, moreover, the protective capability of the monolayer ceramic bumper was obviously promoted with the increasing impact velocity. On the other hand, for the double-layer ceramic/metal bumper, due to the difference in acoustic impedance between the ceramic and alumilun, the impact wace could cause the serious fracture in front ceramic plate as well as the curling deformation of rear aluminum plate, and the damge degree of ceramic/metal bumper increased in higher impact velocity. Because of the larger impact fragments and the smaller expanding bubble of the debris cloud, the protective capability of the double-layer ceramic/metal bumper is worse than the traditional aluminum bumper on the contrary. These primary results provide the theoretical and technological sopports for the space shielding application of TiB2-based ceramic composites.
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