Fracture behavior of silicon nitride ceramics subjected to hypervelocity impact

被引：23
|
作者：
Kawai, N. [1 ]
Tsurui, K. [1 ]
Shindo, D. [1 ]
Motoyashiki, Y. [1 ]
Sato, E. [1 ]
机构：
[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, Kanagawa 2525210, Japan
来源：
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2011年 / 38卷 / 07期
关键词：
Hypervelocity impact; Impact-induced damage; Two-stage light-gas gun; Silicon nitride ceramics; STRENGTH DEGRADATION; DAMAGE; PENETRATION; STEEL;
D O I：
10.1016/j.ijimpeng.2011.01.003
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A new advanced ceramic thruster made of monolithic silicon nitride ceramics was developed for the planetary exploration spacecraft AKATSUKI (PLANET-C) at Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA). To ensure its operation onboard the spacecraft, the reliability of the ceramic thruster against micrometeoroid hypervelocity impact has been investigated. Silicon nitride plates were impacted by spheres of stainless-steel and other materials with 0.2-0.8-mm diameters in the velocity range up to 8.0 km/s using a two-stage light-gas gun. Using crater depth data under various impact conditions, the penetration equation of silicon nitride was determined. The impacted samples showed fracture patterns of three types: cratering, cratering with spallation, and perforation. These fracture patterns were well categorized by the multiple forms of the penetration equation. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：542 / 545
页数：4
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