Investigation of Forensic Glass Fractography made by Different Ammunition

At the scene of crime, investigating officer/crime scene manager or forensic glass examiner often encounters the shooting at inanimate target such as glass, door, window panes, windows of an automobile etc. Now a day, window panes are coated with transparent, but colored sun control coated film for fancy purpose as well as to maintain inside privacy in the houses/offices or in an automobile. These films are easily available in the open market. The main aim of this experiment is to study the fracture characteristics of sun control coated film on various thickness of windowpane by using regular jacketed, non-jacketed and semi jacketed ammunitions manufactured in an Indian Ordnance factory, India. The film-coated window panes were kept at front and away from the muzzle end. The experimental findings of types of bullets on sun control coated film windowpane were completely different. At the crime spot, investigating officers may confuse if the actual shooting took place through film coated glass panes and simulation of crime scenes are not correctly carried out in the laboratory. The detailed findings of this fractography study of the sun control coated film windowpane by .315”, AK-47, .303” rifles and 9 mm regular and country made pistol may be efficacious to forensic community.