Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions

Table 5

Standard deviation and relative spread using piezo pressure method at 25 mm.

Test ammo #	Mean of 10 fired rounds
	Piezo pressure [MPa]	Standard deviation [MPa]	Max value [MPa]	Min value [MPa]	Relative spread (%)
1-NATO	317.28	4.73	326.8	310.95	5.09
2-NATO	316.2	3.75	322.7	309.55	4.24
3-NATO	308.125	4.54	317.8	304.3	4.43
1-NSTD	327.675	4.99	336.95	320.9	5.00
2-NSTD	319.305	5.50	326.25	307.5	6.09
3-NSTD	316.775	10.63	329.7	297.5	10.82