TITLE

Possible detection of failure wave velocity in SiC using hypervelocity penetration experiments

AUTHOR(S)
Orphal, D. L.; Kozhushko, A. A.; Sinani, A. B.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p577
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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 km/s, corresponding to v ≈ 4.5 km/s. The apparent decrease in the slope of u versus v for u > 3 km/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.
ACCESSION #
5985456

 

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