Report
Amorphous alloy reinforced Whipple shield structure
| العنوان: | Amorphous alloy reinforced Whipple shield structure |
|---|---|
| المؤلفون: | 黄鑫, 凌中, Liu ZD, 张虎生, 戴兰宏, Dai, LH, Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| سنة النشر: | 2012 |
| المجموعة: | IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) / 中国科学院力学研究所机构知识库 |
| مصطلحات موضوعية: | Hypervelocity Impact, Amorphous Alloy, Metallic Glass, Whipple Shield, Ballistic Limit Equations, Bulk Metallic Glasses, Debris Clouds, Electrothermal Explosion, Spacecraft, Fracture, Coatings, Powders, 固体力学::冲击动力学, 一类, space vehicles, 超高速撞击, 超高速碰撞, hochgeschwindigkeitsbeanspruchung, impact a vitesse tres elevee, 非晶态合金, space rockets, space shuttle, planetary rovers, raumflugkoerper, satellites, vehicules spatiaux, space ships, 脆性断裂, fractures, bones--fractures |
| الوصف: | In 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. |
| نوع الوثيقة: | report |
| اللغة: | English |
| Relation: | INTERNATIONAL JOURNAL OF IMPACT ENGINEERING; Huang X,Ling Z,Liu ZD,et al. Amorphous alloy reinforced Whipple shield structure[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2012,42:1-10.; http://dspace.imech.ac.cn/handle/311007/46667; http://dx.doi.org/10.1016/j.ijimpeng.2011.11.001 |
| DOI: | 10.1016/j.ijimpeng.2011.11.001 |
| الاتاحة: | http://dspace.imech.ac.cn/handle/311007/46667 https://doi.org/10.1016/j.ijimpeng.2011.11.001 |
| رقم الانضمام: | edsbas.EE091B1A |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.ijimpeng.2011.11.001 |
|---|