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Investigation on Shielding Application of B4C-Al based Composite for Hypervelocity Impact of Space Debris
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Affiliation:

1.Hypervelocity Aerodynamics Institure,China Aerodynamics Research and Development Center;2.University of Electronic Science and Technology of China;3.Northeastern University

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Fund Project:

NSFC(61873305,51502338),Sichuan Science and Technology Plan Project(2018JY0410,2019YJ0199),Mianyang Science and Technology Plan Project(17YFCL004),HIRC Open Foundation(20190101)

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    Abstract:

    In order to improve the shielding ability of spacecraft against space debris hypervelocity impact, the B4C-Al based composites prepared by pressureless presintering and aluminium infiltration in vacuum were designed as the front bumper of Whipple shielding configuration, and the hypervelocity impact tests were carried out on a hypervelocity impact range to evaluate the shielding performance of B4C-Al bumper and Al alloy bumper under the impact velocity of 3 km/s ~ 6.5 km/s. By comparising the bumper penetration, the rear wall damage state and the debris clould structure of the two different bumper materials under various impact velocity as well as the SEM and EDS results, the relationship among the bumper material properties, the cratering mechanics of rear wall and the debris cloud characteristics was discussed. The research results indicated that the B4C-Al bumper can break the projectile into smaller pieces and even make the debris melt, and the impact damage of debris cloud on rear wall was alleviated significantly, meanwhile, the good toughness of Al metallic phase can keep this bumper structure intact. Hence, both the pulverized small debris and the decreased impact kinetic concentration of debris cloud are the main reasons to obtain higher shielding capability of B4C-Al bumper. This primary investigation provided theoretical and technical instructions for the design and application of B4C-Al based composite materials in space debris shielding configuration.

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[Xuegang Huang, Chun Yin, Hongqiang Ru, Yongjun Deng, Yunjia Guo, Qing Luo, Hui Chen, Sen Liu. Investigation on Shielding Application of B4C-Al based Composite for Hypervelocity Impact of Space Debris[J]. Rare Metal Materials and Engineering,2020,49(2):487~493.]
DOI:10.12442/j. issn.1002-185X. QH20190041

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History
  • Received:March 21,2019
  • Revised:April 22,2019
  • Adopted:October 23,2019
  • Online: March 12,2020
  • Published: