用轻气炮低速撞击PVDF靶
Low-Velocity Impacts on PVDF Targets Using a Light Gas Gun
摘要：
轨道碎片对任何航天器的长期健康都是一个制约因素，在飞行任务规划期间必须加以考虑。已经提出了不同的机制来量化这个问题。对于自1950年代以来用于空间飞行任务的旨在探测轨道碎片撞击的各种传感器来说，准确的现场数据是必不可少的[1]。其中最早的是PZT（压电锆钛酸铅）传感器，通常用于现场测量粒子在撞击时的动量。最近，PVDF（聚偏二氟乙烯）[2]已被采用，因为它具有压电能力以及耐用性，无偏置要求，易于大面积传感器结构，高计数率能力和空间可靠性的优点，使其成为理想的空间碎片传感器。其大的感应表面积和易于集成到压电传感器系统中，使其成为任何现场空间碎片传感器中的理想元件。
英文摘要：
Orbital debris is a constraint on the long-term health of any spacecraft and must be consi-dered during mission planning. Varying mechanisms have been proposed to quantify the problem. Accurate in-situ data is essential with various types of sensors designed to detect orbital debris impacts employed on space missions since the 1950's [1]. The earliest of these was the PZT (piezoelectric lead zirconate tita-nate) sensor which was often used in-situ to measure the momentum of a particle at the time of impact. More recently, PVDF (Polyvinylidene fluoride) [2] has been employed as it exhibits piezoelectric capabilities along with the advantages of ruggedness, no bias re-quirement, ease of large area sensor construction, high counting rate capability, and space reliability, making it an ideal space debris sensor. Its large sensing sur-face area and ease of integration into a PZT sensor system makes it a desirable element in any in-situ space debris sensor.
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