Having a mathematical model of the helmet in all its parts allows us to perform Finite Elements Method (FEM) analyses which provide computer simulations of a series of crash tests reproducing not only the official approved standards, but the more demanding AGV standards as well. The FEM analysis and its results show whether the helmet structure needs to be modified to achieve the performance required by the AGV EXTREME Standards. This procedure allows a helmet to undergo a much greater variety of tests many more times than is possible with “real-world” tests because it doesn’t involve the destruction of the shell tested.
The protection capacity criteria specified by the new standards are:
G-FORCE: residual force of impact transmitted to the head.
HIC = Head Injury Criterion: degree of risk of brain injury due to impact acceleration.
During this important phase, agv worked and has been working in conjunction with MIPS AB STOCCOLMA e PADUA UNIVERSITY, (Mechanical Engineering, Materials Characterisation).