Ramp wave generation using graded areal density ceramic flyers and the plate impact technique

18th APS-SCCM; 24th AIRAPT

Taylor, P.^1 ; Goff, M.^1,2 ; Hazell, P.J.^3 ; Leighs, J.^2 ; Wood, D.^2 ; Appleby-Thomas, G.J.^2

AWE, Aldermaston, Reading

RG7 4PR, United Kingdom^1

Cranfield University, Shrivenham, Swindon, SN6 8LA, United Kingdom^2

School of Engineering and Information Technology, UNSW Canberra, University of New South Wales, Northcott Drive, Canberra

ACT

2600, Australia^3

关键词: Alumina ceramic;    Areal densities;    Ceramic stereolithographies;    Electromagnetic particle velocity gauges;    Plate impact;    Polymer target;    Ramp loading;    Square pyramid;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/14/142016/pdf
DOI  :  10.1088/1742-6596/500/14/142016

来源: IOP

【 摘 要 】

A requirement exists to generate realistic insults in energetic targets, for example ramp loadings leading to shock waves. This paper examines the development of a ceramic flyer ramp wave generation technique. Ceramic stereolithography was used to produce fully-dense, graded areal density alumina ceramic flyers. These flyers consisted of multiple square pyramids arranged on a solid base. The gas gun plate impact and electromagnetic particle velocity gauge techniques were used to observe the ramp waves generated when the flyers impacted a Kel-F 81 polymer target. Ramp waves of varying properties were successfully generated in the targets, and good agreement was obtained with 3D hydrocode modelling.