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Amorphous alloy reinforced Whipple shield structure
Huang X(黄鑫); Ling Z(凌中); Liu ZD; Zhang HS(张虎生); Dai LH(戴兰宏); Dai, LH; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
AbstractIn this paper, a new concept space shield structure, namely amorphous alloy reinforced Whipple shield structure, is proposed. A series of experiments have been performed on this new Whipple shield structure which consists of an amorphous alloy reinforced bumper and an LY12 Al (similar to 2024 Al alloy) rear wall using two-stage light-gas gun at impact velocities of 3.5 km/s and 5.5 km/s. Damages including penetration hole in the front bumper and craters on the rear wall have been studied, and it is found that the protective capability of Whipple shield was improved by replacing LY12 Al alloy bumper with Fe-based amorphous alloy reinforced bumper, especially at low impact velocity of 3.5 km/s. A dimensional analysis of the parameters involved in the hypervelocity impact indicates that the coating material with higher density, lower specific heat and not very high melting temperature is helpful for better performance of the new shields. Wave propagation in the projectile and bumper is discussed, and the shock wave strength and temperature rise are calculated, it is found that the amorphous alloy reinforced bumper can produce higher shock pressures and induce higher temperature rise in the projectile. Thus, our preliminary research shows some positive indications that the new Whipple shield structure may provide higher protection level than the traditional one.
KeywordHypervelocity Impact Amorphous Alloy Metallic Glass Whipple Shield Ballistic Limit Equations Bulk Metallic Glasses Hypervelocity Impact Debris Clouds Electrothermal Explosion Spacecraft Fracture Coatings Powders
Subject Area冲击动力学
Indexed BySCI ; EI
WOS IDWOS:000301216100001
Funding OrganizationFinancial support is from the NSFC (Grants Nos.10872206, 10725211, 11021262, 11002144, and 11132011), the National Natural Science Foundation of China-NSAF. Grant No: 10976100, the National Key Basic Research Program of China (Grant No. 2009CB724401).
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorDai, LH; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Huang X,Ling Z,Liu ZD,et al. Amorphous alloy reinforced Whipple shield structure[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2012,42:1-10.
APA 黄鑫.,凌中.,Liu ZD.,张虎生.,戴兰宏.,...&Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China..(2012).Amorphous alloy reinforced Whipple shield structure.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,42,1-10.
MLA 黄鑫,et al."Amorphous alloy reinforced Whipple shield structure".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING 42(2012):1-10.
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