Research on the Dynamic Response Properties of Nonlethal Projectiles for Injury Risk Assessment

Abstract

Based on the models already on the market, we have manufactured six types of nonlethal projectiles. We have made convex heads out of polyurethane foam (PUR) filled with mineral fillers like alumina (Al2O3) and montmorillonite (MMT). We chose a suitable holder for nonlethal projectiles. Also, we made a custom industrial model and used CAD modeling in SolidWorks to simulate the deformation of the nonlethal projectiles. The polymeric nonlethal projectile holders were then 3D-printed. We performed a dynamic mechanical analysis (DMA) and discussed the results. Likewise, we conducted ballistic impact experiments on nonlethal projectiles (XM1006) and nonlethal projectiles manufactured that were evaluated using a rigid wall and a pneumatic launcher. Furthermore, we looked at cell structure, the spread of the mean pore diameter, and the particle size distributions of the mineral fillers using scanning electron microscopy (SEM). We evaluated and discussed injury risks from nonlethal impacts. Data on nonlethal projectile lethality and safe impact speed are collected. This study explains how lab studies and real-world practice coexist through nonlethal projectile properties.

Effects of liquid lubricants on the surface characteristics of 3D-printed polylactic acid

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Influence of Microstructure on the Dynamic Behaviour of Polyurethane Foam with Various Densities

“…The elastomeric touchpad has a factor of linearity and stiffness in the contact area. In another function [6], the application of the contact platform was designed by nonlinear or linear contact hardness, and the effect varied [7]. The models can be analyzed to provide only the load pressure for various heights.…”