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(A) Sketch of sphere section and pressure gages in gelatin: P2, P3, and P4 and air: P1, P8; (B) skull with pressure gages: P3 and P2; (C) strain gages: R1–R4; (D) opening orientation with respect blast direction in different tests: top(test 1), rear (test 4), front (test 9), side (test 12).
