M.Sc. Tezi Görüntüleme

      In this study, the ballistic performance of Ramor 500 and Ramor 550 armour steel plates were experimentally and numerically investigated at various conditions against 7.62 mm bullets. The experimental parts of the study consist of the monolithic plate, double-layered composite plate and oblique plate. In total, seven ballistic impact tests were conducted. For the monolithic plates, 6.7 mm thick Ramor 500 and 6.2 mm thick Ramor 550 were used. Plates were perforated and the failure mechanism of petaling observed. For the double-layered composite plates, 6.7 mm thick Ramor 500 and 6.2 mm thick Ramor 550 were layered at two different ordering structure and they were impacted. It was found that Ramor 550 as a facing plate and Ramor 500 as a backing plate exhibit better resistance than the configuration of the opposite layering order and the main failure modes of the targets were plugging and bulging. For the oblique plates, 4.5 mm thick Ramor 500 armour steels were impacted at 0, 30 and 60 degree obliquity. The result showed that ballistic resistance of plates increased as the impact angle was increased. In the numerical analysis, the oblique plates were examined. The results of finite element analyses reflected the experimental results with high accuracy.

      Keywords: Ballistic penetration, monolithic plate, double-layered composite plate, oblique