39 



457 



12 16 20 24 



d(,. Charge Distance in inches 



28 



32 



Figure 35 - Central Deflection Just before Arrival of the Second Pulse 

 Caused by the Globe Oscillations 



Compare with Figure 32. 



3.0 



2.0 



1.0 



12 16 20 24 



d(. , Chorge Distonce in inches 



28 



32 



Figure 34 - Central Deflection Just after the Second Pulse, 

 from the Gas-Globe Oscillations, Has Done Its Damage 



the final central deflections Z^, plotted in Figure 35- For the ruptured 

 diaphragms, estimates of the central deflections were made by assuming par- 

 abolic shapes in the torn central region. These doubtful deflection values 

 are distinguished by plotting them as crosses. Of course, there is consider- 

 able scatter among these latter points, but the break in the curve at the 

 critical rupture distance is quite clear. Little damage is done to the dia- 

 phragms after the second blow, as can be verified by comparing Figure 35 with 

 Figure 3'+. 



