Armour steels have typically been used in the construction of light armoured vehicles. Improvement in performance of armour is usually achieved by increasing the strength of the steel. In this paper, an experimental study has been carried out to investigate the performance improvement in steel through incorporation of perforations in the plate. Circular holes of diameter equal to that of the projectile were drilled in high hardness armour steel plates. These plates were subjected to ballistic impact of 7.62 mm AP projectiles by backing them with thick plate of 7017 Aluminium alloy. Improvement in efficiency of such perforated plates was evaluated by comparing the DOP under different conditions of impact. Results show that there is an improvement of about 37% in thickness efficiency and about 70% in mass efficiency of high hardness armour steel only due to perforations. Computational simulations were also carried out to correlate the effects of perforated armour. Results of experiments and simulations showed good correlation. Photographs of the target and backing plate after the experiments along with analysis of the ballistic efficiency of the perforated armour have been presented in this paper.
An experimental and numerical study of edge impact of 7.62 mm AP projectile on perforated high hardness armour steel plates
Eine experimentelle und numerische Studie des Kantenaufpralls eines 7.62 mm AP-Projektiles auf perforierte Panzerstahlbleche hoher Härte
2009
12 Seiten, 10 Bilder, 1 Tabelle, 12 Quellen
Conference paper
English
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