A Method for Determining the Area of a Material (Tissue) Defect in Gunshot Damage Using a Luxmeter
Abstract:
The article describes a new method for determining the area of a material (tissue) defect in gunshot damage, which was developed for forensic and medico-legal practice. The method is based on the use of a portable luxmeter, which allows calculating the area of the damage using an original formula based on three illuminance measurements. Announced as an invention, this method has been successfully tested in experimental and practical activities, demonstrating high accuracy, objectivity, reliability, and speed. It minimizes measurement errors and significantly reduces the laboriousness of determining the sought parameter compared to existing analogues, thereby fully meeting the requirements of forensic practice. The effectiveness of the proposed method is confirmed by the results of experimental studies, in which defects in targets made of vacuum rubber were examined using a universal experimental firing setup and 9-mm pistol bullets fired from a Makarov pistol with a lightly used barrel. A relationship was established between the area of damageof the bullet entry and the velocity of the bullets, provided the mechanism of their formation was the same.
Keywords:
tissue loss, area, luxmeter, measurement, formula, calculation

