Possible detection of failure wave velocity using hypervelocity penetration experiments
✍ Scribed by A.A. Kozhushko; D.L. Orphal; A.B. Sinani; R.R. Franzen
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 386 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0734-743X
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✦ Synopsis
Data for projectile penetration of silicon carbide (SIC) from two types of experiments are combined. For impact velocities, v, in the range 1.5 -4.6 km/s the data are from reverse ballistic two-stage light-gas gun experiments with long tungsten rods. For impact velocities of about 5 -7 km/s copper shaped charge jets are the projectile. The data exhibit an apparent inflection in the penetration velocity, u, versus impact velocity curve at u 3 kin/s, corresponding to v = 4.5 km/s. The apparent decrease in the slope of u versus v for u -3 kin/s, and the consequent rapid increase in the Alekseevskii and Tate target resistance term Rt with v is tentatively interpreted in terms of a failure wave in SiC. With this interpretation the propagation speed of the failure wave in SiC is about 3 km/s or 1/3 of the compressional wave speed.