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Dwell and interface defeat on borosilicate glass

: Anderson, C.E.; Holmquist, T.J.; Orphal, D.L.; Behner, T.


International journal of applied ceramic technology 7 (2010), No.6, pp.776-786
ISSN: 1546-542X
ISSN: 1744-7402
Journal Article
Fraunhofer EMI ()

We have conducted impact experiments using gold long rods into borosilicate glass and the measured the penetration velocity as a function of impact velocity. At sufficiently low-impact velocities, the glass target resists penetration and there is dwell; dwell is observed to approximately 450 m/s for bare glass. If a copper buffer is placed over the glass to eliminate the impact shock, significant dwell can be seen at impact velocities as high as 890 m/s. These impact velocities correspond to Bernoulli stresses of approximately 2.0 and 7.6GPa, respectively. The paper describes the experimental data, and summarizes the results and our findings.