2ifi SHOCK WAVE MEASUREMENTS 



Although the data for pentoUte give the most detailed verification of 

 the principle of similarity, investigations with other explosives (TNT, 

 tetryl, and mixed explosives) have established similarity curves for 

 these explosives also, some of which are discussed in comparison with 

 each other and with theory in the next section. 



7.4. Similarity Curves for Various Explosives 



Shock wave similarity curves for a considerable range of charge 

 weights and distances from the charge have been obtained for several 





2 Olio 



s 0.0« 



jP aoo 



^ O.M 



0«4 OM OMOJ ot a* C« M M I* 



TIME CONSTANT /»^ 



lAk pressure 



JV« iLaS^rri 



■^/n (iJk/rn 



IMf>ULSE / Vl^ (MTCONATCD TO %.! 



• ) 



ENERGY /\(l^ (MTIOMATCO TO %3 NOMMAL •) 



Fig. 



Similarity curves for spherical TNT charges plotted against Vi^^^lR. 

 Fig. 7.8 (upper left), Peak pressure Vm. 

 Fig. 7.9 (upper right), Reduced time constant Q/W^^^. 

 Fig. 7.10 (lower left), Reduced impulse I jW^^^ to time 6.70. 

 7.11 (lower right), Reduced energy flux density Ej/W^^^ to time 6.70. 



