Study on shielding performance of aerogel/fiberglass composite stuffed shield. (March 2023)

• Record Type: Journal Article
• Authors: Jing, Li; Xuezhong, Wen; Jie, Huang; Qiang, Song; Fawei, Ke; Lin, Jiang
• Is Part Of: International journal of impact engineering. Volume 173(2023)
• Publication Date: 2023-03
• Subjects: Hypervelocity impact -- Space debris -- Shield -- Aerogel -- Composite; Impact -- Periodicals; Shock (Mechanics) -- Periodicals; Impact -- Périodiques; Choc (Mécanique) -- Périodiques; Impact; Shock (Mechanics); Periodicals; 620.1125
• DOI: 10.1016/j.ijimpeng.2022.104467
• Languages: English
• ISSNs: 0734-743X

Abstract

Highlights: SAFC stuffed shield increased critical projectile diameter by 160% at 4.8km/s. SAFC stuffed shield performed well when impact velocity increased to 8.46km/s. SAFC stuffed shield performed better than Whipple shield at 8.3±0.2km/s. Abstract: In previous research, excellent shielding performance was found when the SiO2 aerogel/fiberglass composite (SAFC) was stuffed in shield. It could be an economical choice to improve debris shielding performance by applying SAFC stuffed shield to spacecrafts. A series of hypervelocity impact tests were carried out on the hypervelocity impact range A and range C in CARDC. The projectiles are aluminum spheres with diameter of 5.5 mm to 6.3 mm and the impact velocity was around 4.8 km/s. The targets were SAFC stuffed shield and aluminum triple-wall shield with the same areal density. Comparing with the aluminum triple-wall shield, the shield stuffed with SAFC was capable to considerably increase the critical projectile diameter by 160% at 4.8 km/s. Furthermore, the same SAFC stuffed shield structure was hit by 6.0 mm aluminum sphere at 8.3 ± 0.2 km/s and shielding performance were primarily discussed.