Research Article
Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions
Table 4
Standard deviation and relative spread using copper crusher method at 25 mm.
| Test ammo # | Mean of 10 fired rounds | Chamber pressure [MPa] | Standard deviation [MPa] | Max value [MPa] | Min value [MPa] | Relative spread (%) |
| 1-NATO | 297.69 | 6.34 | 308.8 | 291.5 | 5.93 | 2-NATO | 293.6 | 6.39 | 302.4 | 287.2 | 5.29 | 3-NATO | 296.9 | 5.34 | 304.5 | 287.2 | 6.02 | 1-NSTD | 296.24 | 9.80 | 321.2 | 287.2 | 11.83 | 2-NSTD | 297.77 | 8.32 | 310.8 | 287.2 | 8.21 | 3-NSTD | 300.93 | 11.81 | 321.2 | 287.2 | 11.83 |
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