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Validation of semi-empirical blast pressure predictions for far field explosions - is there inherent variability in blast wave parameters?

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Figure

Figure 2: Pressure gauge location and general test arrangement.
Figure 3: Pressure-time histories and best fit curves recorded 4 m orthogonal distance and 2 m along  bunker wall from 250 g hemispherical PE4 charge
Figure 4: (a) Scaled arrival times and (b) positive phase duration for experimental trials compared to empirical (ConWep) predictions
Table 1: Experimental and ConWep peak reflected pressures and ratio of experiment/ConWep for normally reflected pressure recordings *Curves fit to data from Tyas et al.[15] †Curves fit to data from Rigby et al.[17]
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