BACKGROUND Currently, there is a greater use of nonlethal force in law enforcement and military operations. Because facial injuries have been observed, there is a need to understand the human response to ballistic impacts involving various regions of the face. This study aimed to establish blunt ballistic response corridors for high-speed, low-mass facial impacts to the forehead, zygoma, and ma...

Experimental studies have been performed of foreign object damage (FOD) imparted to a thermal barrier system under conditions representative of those found in a turbine engine. The sub-surface damage has been characterized by using the focused ion beam (FIB) imaging system. The characterization reveals changes in the thermal barrier coating (TBC), caused by particle impact, that confirm and ela...

Abstract In the structural layout of missiles and rockets, engine is generally placed behind warhead. order to investigate effects on penetration performance semi-armor piercing (SAP) warheads, this study numerically simulated oblique an SAP warhead a free-flight rocket into armor plates. The results showed that under condition penetration, compressive force underwent was asymmetric attitude ch...

Assessing the lethality of Kinetic Energy Non-lethal Weapons (KENLW) is very complicated because of the wide variety of projectiles currently in use, as well as the complexity that characterises the interaction between the projectile and the human body. This article describes and applies injury criteria found in the literature to perform a lethality assessment of a 40mm Nobel Sport sponge grena...

Abstract The overload signal of fuze is prone to be adhesion while projectile penetrating multi-layer target with high speed. This problem would cause failure judgment the layers. ahhesion phenomenon related many factors, such as penetration speed, parameters projectile, characteris and so on. In this paper, influence speed length-diameter ratio on overlaod analyzed by numerical simulation. Fir...

Nonlinear factors such as the contact stiffness and friction damping at threaded interface of a projectile–fuse system significantly affect dynamic response characteristics. To obtain fuse body accurately during penetration, it is necessary to characterize these nonlinear reasonably. Because existing structural dynamics software cannot effectively deal with factors, thin-layer element method wa...