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

作　　者：Elmar STRASSBURGER Steffen BAUER Steffen WEBER Heiner GEDON 

机构地区：[1]Fraunhofer Institute for High-Speed Dynamics,Ernst-Mach-Institute(EMI),Am Christianswuhr 2,79400 Kandern,Germany [2]DLR–German Aerospace Center,Institute of Structures and Design,Pfaffenwaldring 38-40,70569 Stuttgart,Germany [3]WIWeB–Bundeswehr Research Institute for Materials,Fuels and Lubricants,Institutsweg 1,85435 Erding,Germany

出　　处：《Defence Technology（防务技术）》2016年第3期277-283,共7页Defence Technology

基　　金：financial support of the study by the Bundeswehr Research Institute for Materials, Fuels and Lubricants (WIWe B) (grant number E/E210/AB015/9F120)

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 k V 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 Si C ceramics.Two commercial Si C grades and MICASIC(Metal Infiltrated Carbon derived Si C),a C-Si Si C 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.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 k V 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 Si C ceramics. Two commercial Si C 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.

关 键 词：BALLISTIC resistance DWELL FLASH X-RAY CINEMATOGRAPHY SiC ceramics 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]