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Published in:
2018 | OriginalPaper | Chapter
32. Evaluation of Concrete Penetration Resistance Using Small Caliber Bullets
Authors : Stephan Bless, Michael McAleer, Rey Guzman
Published in: Dynamic Behavior of Materials, Volume 1
Publisher: Springer International Publishing
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Abstract
Small caliber armor-piercing bullets were fired at two difference types of concrete, 3.5 ksi or 10 ksi. The projectiles all had the same diameter, 5.6 mm, but had different lengths, and hence different masses. Exit velocity was measured. Therefore the data provided information for penetration resistance as a function of impact velocity, projectile mass, and concrete strength. Data were fit with a Poncelet equation. Superior fits were achieved when both the inertial term and strength terms were included. The empirical Poncelet parameters were compared with those computed from conventional cavity expansion analysis that includes both inertia and compressive strength. The cavity expansion model provided a good fit to residual velocity as a function of impact velocity for the 3.5 ksi targets but not the 10ksi targets.