Table 1.
Characterization of blast by training course.
| Data collection | Number of charges | Types of charges | Peak overpressure | Cum. Impulse |
|---|---|---|---|---|
| 1 | 3-4 | CFCF |
Mean = 4.35 (SD = 1.24) Min = 0.64, Max = 7.36 |
Mean = 32.59 (SD = 4.02) Min = 21.63, Max = 41.63 |
| 2 | 2-4 | CFCF |
Mean = 4.11 (SD = 1.10) Min = 1.39, Max = 6.81 |
Mean = 32.22 (SD = 7.63) Min = 18.60, Max = 45.82 |
| 3 | 2-4 | CFCF |
Mean = 4.18 (SD = 0.80) Min = 2.76, Max = 6.74 |
Mean = 33.93 (SD = 10.13) Min = 16.90, Max = 47.20 |
| 4 | 2 | CC |
Mean = 4.33 (SD = 0.62) Min = 2.90, Max = 6.02 |
Mean = 23.46 (SD = 2.22) Min = 19.50, Max = 28.80 |
| 5 | 2 | CC |
Mean = 4.55 (SD = 0.82) Min = 3.26, Max = 7.36 |
Mean = 26.11 (SD = 1.92) Min = 21.90, Max = 30.40 |
| 6 | 2 | CC |
Mean = 4.47 (SD = 1.14) Min = 2.57, Max = 7.80 |
Mean = 21.91 (SD = 3.71) Min = 15.05, Max = 30.36 |
| 7 | 2 | CC |
Mean = 4.38 (SD = 1.06) Min = 3.19, Max = 9.17 |
Mean = 23.98 (SD = 2.08) Min = 19.80, Max = 29.40 |
Charge number varied within data collection based on team. Some teams could not receive as many charge opportunities as others due to number of students per group, or time commitment. CFCF indicates 2 concrete, and 2 fence charges, whereas CC indicates participants only had exposure to 2 concrete charges. Once charge frequency was reduced, cumulative impulse decreased over the courses evaluated.