کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
830380 | 1470354 | 2013 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experimental studies on the effect of size and shape of holes on damage and microstructure of high hardness armour steel plates under ballistic impact Experimental studies on the effect of size and shape of holes on damage and microstructure of high hardness armour steel plates under ballistic impact](/preview/png/830380.png)
In the present work the effect of size and shape of regularly spaced holes on the ballistic impact behavior of high hardness steel plates has been studied. Thick backing technique was used to evaluate the efficiency of these plates when subjected to ballistic impact of 7.62 mm non-deformable hard steel core projectiles. The ballistic efficiency of these steel plates was found to be sensitive to size of the holes. Higher efficiency was found for plates with hole sizes close to the diameter of the projectile. Damage patterns and microstructure of the perforated steel plate have been compared with those of non-perforated steel plates. It has been found that presence of holes inhibits shear band formation in the target plates.
► The ballistic efficiency of these steel plates was found to be insensitive to shape of the holes.
► The ballistic efficiency of these steel plates was found to be sensitive to size of the holes.
► Higher efficiency was found for plates having hole sizes close to the diameter of the projectile.
► It has been found that presence of holes inhibit shear band formation in the target plates.
Journal: Materials & Design - Volume 43, January 2013, Pages 17–24