High-rate penetration of a striker into SiC ceramic with different void content |
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Authors: | A S Vlasov E L Zil’berbrand A A Kozhushko A I Kozachuk A B Sinani A I Slutsker V I Betekhtin S S Ordan’yan |
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Institution: | (1) Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia;(2) St. Petersburg State Technological Institute (Technical University), Moskovskii pr. 26, St. Petersburg, 198013, Russia |
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Abstract: | The kinetics of penetration of deformable striking rods into SiC ceramics with different void content is studied. The penetration
may be viewed as a two-stage process. At the first stage, the penetration rate is minimal and the rate of contraction of the
rod is maximal. At this stage, the penetration resistance of the ceramic is the highest. At the second (quasi-steady-state)
stage, the penetration kinetics is similar to the kinetics of penetration into a zero-strength medium and resistance to penetration
is largely inertial. At the first stage, the penetration resistance is shown to correlate with the hardness of the ceramic
and depend strongly on the void content. |
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