The properties of elastic wave propagation in thin truncated conical shells were studied. Theoretical results were compared with experimental data obtained by impacting a truncated shell with a steel ball. The method of solving the equations yielded continuous waveforms which could be compared directly with strain gage data. The general simultaneous equations for the conical shell were obtained and reduced to a single equation with longitudinal displacement as the unknown. ...
A test machine is described which will load specimens in compression at rates as high as 30 ips or 6000 %/sec for a 1/2 in. thick sample. The rate of compression and the shape of the % compression time curve is readily varied. The stress-% compression diagram associated with any given % compression time curve is plotted directly. An impact method which has been used to obtain stress-% compression diagrams ...
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