Acoustic response of aluminium and Duroid plates to hypervelocity impacts

作者：Burchell M J^*; Standen S; Cole M J; Corsaro R D; Giovane F; Liou J C; Pisacane V; Sadilek A; Stan**ery E

来源：International Journal of Impact Engineering, 2011, 38(6): 426-433.

DOI：10.1016/j.ijimpeng.2010.10.012

• Acoustic
• Hypervelocity
• Impact
• Sensors

The growing need for real-time impact sensors for deployment on both space vehicles and space habitats (in orbit or on the surface of atmosphere-less bodies such as the Moon) has stimulated sensor development programmes. The sensors should be low mass, low power, easily read-out electronically, cover large areas and be sensitive to impacts which can cause damage up to and including penetration. We propose that piezo-strain acoustic sensors can play an important role in this work. Accordingly we report on a series of hypervelocity impact tests of acoustic sensors mounted on thin plates (aluminium and Duroid plates). The acoustic sensors gave strong signals for impacts of sub mm-mm scale projectiles. We investigated dependences on impactor speed and size, angle of incidence and tested the difference between cratering and penetrating impacts.

• 出版日期2011-6