The vehicle acceleration resulted from the load blast was directly transmitted to the lower extremities, resulting in unintended kinematic and interaction on the passenger body. The solid frame as part of seat structure appeared to contribute to an excessive kinematic on the lower extremities. Based on this study, the critical injuries identified on the head injury, neck compression, and tibia axial load. The injury assessment reference values (IARV) for the regulation used in this study were based on AEP-55 volume 2. The load case for this study referred to NATO STANAG 4569 level 3b with 8 kg TNT explosive load underbelly. The military personnel inside the armored vehicle was modeled by using Hybrid III 50 th percentile anthropomorphic test device (ATD) and its biomechanical response was monitored on the head, neck, thorax, spine, femur, and tibia. The subsystem evaluation in this study included the finite element modeling of military personnel, seat system, surrounding interior system, seatbelt, and restraint system with four running conditions.

The available experiment data of occupant survivability test on a medium size tank was used to validate the numerical model. In this research, the numerical studies on the countermeasure analysis to reduce injury biomechanics risk were conducted.

United States: UL752 -Rev.The demand for blastworthy structures increases due to a large number of casualties in the armored vehicle undergoing improvised explosive device (IED) and landmine attacks. Price for SUV at this level is US $80,000 The opaque is ballistic steel reinforced by German Twaron rubberized laminates. In order to protect from this round, we utilize our patented *Glass 80mm* curved glass. The protection greatly exceeds CEN B7 or NIJ IV. This level also effectively protects from heavy fragments thrown by improvised explosive devices (IED's).Ĭurrently the only standard for this round is the is UL 752 armor Level 10 (revised Dec. 50 caliber round is 4.7 times heavier than the 7.62 Nato with about the same speed (2,750 fps).

Here at ISBI Armoring, we are able to go one step ahead of other armoring companies and offer protection from the. Level IV is the commercial equivalent to level B6 CEN European Norm and NIJ IIIĭownload Certificate Close Focus Research *OUR SILICON CARBIDE TILES STOP THEM ALL* The 7.62 NATO and 5.56 NATO are difficult to stop with glass at this level because of the 7.62 NATO's weight and the 5.56 NATO's velocity (930 M/S).Īmmunition type: 5.56 NATO Ball penetrates metals far better than 7.62 NATO Ball (M-80) and type SS109 5.56 NATO 'Green Tip' easily penetrates thin plastics such as Spectra, Famostone and Aristone.Īll ballistic tests are conducted at a distance of 25 meters to allow the projectile to be stabilized. The total weight of the vehicle increases 1,900 lbs. In addition, the roof and floor are usually armored with level IIIA. This level of armor is used when the threat level for rifle fire is high (rifle calibers 7.62 Ball M80 830 meters per second and 5.56 SS109 and M193 called B6+).

Nato stanag 4569 nivel 2