Ballistic Behaviour of Austempered Compacted Graphite Iron Perforated Plates

Petar Janjatovic; Sebastian Balos; Igor Radisavljevic; Miroslav Dramicanin; Olivera Eric Cekic; L. Sidjanin

doi:10.14429/dsj.69.14010

Petar Janjatovic Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000
Sebastian Balos Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000
Igor Radisavljevic Military Technical Institute, University of Belgrade, Belgrade, 11132
Miroslav Dramicanin Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000
Olivera Eric Cekic Faculty of Mechanical Engineering, Innovation Centre, University of Belgrade, Belgrade, 11000
L. Sidjanin Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000

DOI: https://doi.org/10.14429/dsj.69.14010

Keywords: Austempered compacted graphite iron, Perforated plates, Ballistic protection

Abstract

In this study, the performance of austempered compacted graphite iron was evaluated to find its suitability as perforated plates used in add-on armour. Perforated compacted graphite plates were subjected to austenitisation at 900 °C for 2 h followed by austempering at 275 and 400 °C for 1 h. The basic plate was fixed at 400 mm away from the perforated plate and armour and then piercing incendiary projectile was shot from a distance of 100 m. It was observed that both 7 mm and 9 mm perforated plates austempered at lower temperature of 275 °C producing higher hardness and lower ductility were effective in fracturing the penetrating core, thereby significantly decreasing the chances of penetrating the basic plate.

Author Biographies

Petar Janjatovic, Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000

Mr Petar Janjatovic received his MSc, in 2010. Presently working as an Assistant-master at the Department of Production Engineering, Faculty of Technical Sciences Novi Sad, Serbia. He is currently involved in the research related to dual-phase austempered ductile iron optimisation of micropstructural and mechanical properties, activated tungsten inert gas welding and gas-powder thermal spraying process.
Contribution in the current study he did metallographic tests, micorhardness tests

Sebastian Balos, Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000

Prof. (Dr) Sebastian Balos received his PhD, in 2010. Presently working as an Associate Professor, Head of the Department of Production Engineering, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia. His current research activity is in the field of material science, particularly ballistic protection, polymer nanocomposites, austempered cast iron and welding, most particularly activated tungsten inert gas, friction stir welding and friction stir processing.
Contribution in the current study he designed the experiment, damaged area calculation, interpretation of data, wrote

the paper.

Igor Radisavljevic, Military Technical Institute, University of Belgrade, Belgrade, 11132

Dr Igor Radisavljevic received his PhD in 2014. Presently working as a Scientific Associate in the field of technical and technological Scienes at the Military Technical Institute, University of Belgrade, Serbia. His field of research is related to the development of metallic material and ballistic testing, characterisation and mechanical properties, failure analysis, fracture mechanics, implementation of production technology into industrial process.
Contribution in the current study he did ballistic tests, perforation design.

Miroslav Dramicanin, Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000

Mr Miroslav Dramicanin eceived his MSc, in 2010. Presently working as an Assistant-master at the Department of Production Engineering, Faculty of Technical Sciences Novi Sad, Serbia. His current fileds of interest are related to activated tungsten inert gas welding and gas-powder thermal spraying process and ballistic testing.
Contribution in the current study, he did mechanical property testing, editing the paper.

Olivera Eric Cekic, Faculty of Mechanical Engineering, Innovation Centre, University of Belgrade, Belgrade, 11000

Dr Olivera Eric-Cekic received her PhD, in 2006. Presently working at the Innovation Centre of the Faculty of Mechanical Engineering, University of Belgrade. Her current field of research are austempered ductile irons. In addition, she was also involved in research of metal matrix composites.
Contribution in the current study, she provided the resourcescasting the specimens, perforation drilling.

L. Sidjanin, Faculty of Technical Sciences, Department of Production Engineering, University of Novi Sad, Novi Sad, 21000

Prof. Dr L.Sidjanin received her PhD in 1983 in the field of characterisation and micromechanism of fracture of ferrous alloys. She is Emeritus Professor at the Department of Production Engineering, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Republic of Serbia. She contributed to scientific research activities at the School of Metallurgy and Materials, University of Birmingham, UK, and at the Department of Materials Science and Mineral Engineering, University of California at Berkeley, U SA, in a Fulbright post-doctorprogram. Her current research is focused on the optimization of chemical content and process parameters of austempered ductile iron (ADI) material, as well as in the field of ceramic materials and military vehicles.

Contribution in the current study, she did text editing and corrections.