Flash X-ray cinematography analysis of dwell and penetration of small caliber projectiles with three types of SiC ceramics

Defence Technology

Steffen Weber¹  Elmar Strassburger²  Steffen Bauer²  Heiner Gedon³ 

[1] DLR – German Aerospace Center, Institute of Structures and Design, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany;Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institute (EMI), Am Christianswuhr 2, 79400 Kandern, Germany;WIWeB – Bundeswehr Research Institute for Materials, Fuels and Lubricants, Institutsweg 1, 85435 Erding, Germany;

关键词: Ballistic resistance;    Dwell;    Flash X-ray cinematography;    SiC ceramics;   

DOI  :  10.1016/j.dt.2016.01.011

来源: DOAJ

【 摘 要 】

In order to improve the performance of ceramic composite armor it is essential to know the mechanisms during each phase of the projectile–target interaction and their influence on the penetration resistance. Since the view on the crater zone and the tip of a projectile penetrating a ceramic is rapidly getting obscured by damaged material, a flash X-ray technique has to be applied in order to visualize projectile penetration. For this purpose, usually several flash X-ray tubes are arranged around the target and the radiographs are recorded on film. At EMI a flash X-ray imaging method has been developed, which provides up to eight flash radiographs in one experiment. A multi-anode 450 kV flash X-ray tube is utilized with this method. The radiation transmitted through the target is then detected on a fluorescent screen. The fluorescent screen converts the radiograph into an image in the visible wavelength range, which is photographed by means of a high-speed camera. This technique has been applied to visualize and analyze the penetration of 7.62 mm AP projectiles into three different types of SiC ceramics. Two commercial SiC grades and MICASIC (Metal Infiltrated Carbon derived SiC), a C-SiSiC ceramic developed by DLR, have been studied. The influences, not only of the ceramic but also the backing material, on dwell time and projectile erosion have been studied. Penetration curves have been determined and their relevance to the ballistic resistance is discussed.

【 授权许可】

Unknown