Expansion into vacuum of a shocked tungsten carbide-epoxy mixture.

[摘要] The behavior of a shocked tungsten carbide / epoxy mixture as it expands into a vacuum has been studied through a combination of experiments and simulations. X-ray radiography of the expanding material as well as the velocity measured for a stood-off witness late are used to understand the physics of the problem. The initial shock causes vaporization of the epoxy matrix, leading to a multi-phase flow situation as the epoxy expands rapidly at around 8 km/s followed by the WC particles moving around 3 km/s. There are also small amounts of WC moving at higher velocities, apparently due to jetting in the sample. These experiments provide important data about the multi-phase flow characteristics of this material.

[发布日期] 2009-03-01

[学科分类] 化学（综合）

[关键词] BEHAVIOR;DATA;EVAPORATION;EXPANSION;MATERIALS;MIXTURES;PARTICLES;PHYSICS;TUNGSTEN;TUNGSTEN CARBIDES;VELOCITY;WELLS;X-RAY RADIOGRAPHY Materials-Research.;Epoxy compounds.;Tungsten-Analysis.