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Determination of the Efficiency of a Spaced Thin Layer Steel Target Against Small Caliber Ammunition



Ships have great internal volume with steel structure walls having a low thickness. On another side, in the unstable international field, vessels are able to be shot by kinetic projectile threat. We tried to estimate the protection capacity of steel structure plates with a low thickness against small caliber projectiles. From experimental results, we elaborated a simple analytical model to determinate the ballistic limit velocity. We can show that the energy associated to the bending phenomenon at the end of the perforation decreases when the yield strength of the target material increases. This model has been used also for inclined plates. It is then able to take account of different targets made of spaced thin layer steel plate according to the configuration met inside ships.

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