Development of magnetic gauges for the measurement of particle velocities during one-dimensional shock loading

摘要: The measurement of particle velocity in shock-loaded materials (that is the material flow behind shock front) an important parameter understanding a material's response to loading. This can be measured directly by use embedded sensors within target material, which track flow. takes advantage Faraday's law, where moving conductor magnetic field experiences imposed voltage, magnitude dependent upon length that and through field. However, such measurements are not as widespread other techniques interferometers or stress gauges. In this paper, development discussed, results from their whose already known (polymethylmethacrylate) presented. Much work previous authors concerning gauges has introduced them at angle impact axis. was done prevent each gauge element interfering with those immediately it impeding Therefore we have investigated role plane on resultant records. We also included separate castellated element, tracker, measure position respect time, thus determine front velocity. both context under conditions others.