ABLATION OF A HOLLOW SPHERE
POLYTECHNIC INST OF BROOKLYN FARMINGDALE NY DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS
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This report covers a study of metallic, multiple layer composite materials. Samples of Ag-Cr, Ag-Fe, Ag-Cu, Ag-Mg, Pb-Zn, Cd-Sn and Pb-Sn have been considered. Three fabrication techniques were considered-alternate evaporation in vacua, alternate electroplating and cold rolling of alternate layer stacks. Significant strength increases over pure and alloy materials have been observed for Ag-Cu and Pb-Zn composites. These strengths do not approach the theoretically predicted levels, but the authors feel that they do warrant further study.