AN ASSESSMENT METHOD OF BEHIND ARMOR BLUNT TRAUMA BASED ON STUN ENERGY

Abstract

In order to effectively conduct the evaluation of behind armor blunt trauma (BABT), the stun energy induced by the pressure wave was proposed to evaluate the injury level of BABT. The expression of the stun energy was derived according to the relation between the stress wave propagation in the gelatin and the stun energy. The experiments of several typical bullets impacting gelatin covered with armor were carried out to validate the method of stun energy, and the characteristic parameters of stun energy, the maximum pressure and the pressure impulse were obtained. The assessment results based on stun energy and the score of Maximum Abbreviated Injury Scale (MAIS) in the biological experiments were compared, and it was indicated that the stun energy in the gelatin impacted by different bullets was consistent with the score of MAIS. The evaluation method based on stun energy can be used to quantitatively measure the effects of behind armor blunt trauma.