Penetration of confined boron carbide targets by tungsten long rods at impact velocities from 1.5 to 5.0 km/s
✍ Scribed by D.L. Orphal; R.R. Franzen; A.C. Charters; T.L. Menna; A.J. Piekutowski
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 938 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0734-743X
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✦ Synopsis
Forty terminal ballistics experiments were performed to measure the penetration of simple confined boron carbide targets by long tungsten rods. Impact velocities ranged from 1.5 to about 5.0km/s. The experiments were performed in the reverse ballistic mode using a two-stage light-gas gun. For tests with velocities 1.493 < v < 2.767 km/s, the penetrator diameter was 1.02mm (0.040inch). For tests with impact velocities v>2.778km/s the penetrator diameter was 0.762mm (0.030inch). For tests in the velocity range 2.335 < v< 2.761 km/s both penetrator sizes were used. The length-to-diameter ratio for the penetrator was L/D = 20 for all but the three highest velocity tests; in these three tests L/D = 15. Primary instrumentation for these experiments was four independently timed, 450 kV flash X-rays. These X-rays provided four views of the penetrator-target interaction during the penetration event from which he following data were determined: p = penetration depth as a function of time, L r = remaining length of penetrator as a function of time, as well as target hole geometry, spatial distribution of the eroded rod material etc. From these data, u = dp/dt = speed of penetration into the target, vc = d(L -L~)/dt = "consumption" rate of the long rod and final penetration depth were obtained.