DEBRIS FORMATION FROM LAYERED PLATE TARGET BY MICROPROJECTILE IMPACT

For the feasibility study of the availability of a different-material- laminated spacecraft bumper, double-layered plate targets with the com bination of an aluminum sheet and a copper one were prepared and impac ted by glass microprojectiles at the velocity of 4 km/s. The morpholog y of target perforation and debris dispersion were investigated with r espect to their dependence on material discontinuity in the target. Ob vious difference was observed experimentally in the perforation and de bris dispersion at the discontinuity. The difference was discussed qua litatively according to one-dimensional analysis of shock compression and pressure release in the target.