The idea of using biosensors to fight against TBI and concussion has been the inspiration for many types of research. Ouckama et al., 2010 used the force-sensing resistor to test the effectiveness of wearing a helmet (Ouckama 2010). Sport-helmets are believed to secure the head and surrounding tissue against impact. They are regulated by different agencies like ISO and ASTM International. With stimulation studies using the 3D Finite Element Analysis (FEA), a clear evidence of how much these helmets can protect the head is uncertain. In fact, Greenwald et al., 2008 showed unpredictable head injury in regard to the relative of translational head acceleration and concussion (Greenwald 2008). Lacking the helmet's measurement on impact forces affecting the brain, the argument about the helmet's
…show more content…
The sensor array was then put under an expanded polypropylene or EPP (a commonly used multiple impact helmet foam) with three different foam's densities 54.8, 69.0, and 86.1 kg/m3. A 20kN loaded cell was at the base of the array to collect the impact recording. The setup tried to evaluate the contact force between the helmet foam and the head. The helmet foams were tested at 5 J with the cold (-25C) and the room (20C) temperature. The sensor array covered only 36% of the total tested area but still good enough to capture the load. Knowing the impact stress could not cause the bone fracture; it can induce local tissue distress or propagate stress wave pulses to the underlying cortex. The data revealed how much the stress was absorbed by the bone and neurovascular structure under an impact. The Ouckama et al. 2010's test faced a challenge with the sensor impact duration and loading rates. At the time, these sensors reading on flexible and curvature surface were
The sensor array was then put under an expanded polypropylene or EPP (a commonly used multiple impact helmet foam) with three different foam's densities 54.8, 69.0, and 86.1 kg/m3. A 20kN loaded cell was at the base of the array to collect the impact recording. The setup tried to evaluate the contact force between the helmet foam and the head. The helmet foams were tested at 5 J with the cold (-25C) and the room (20C) temperature. The sensor array covered only 36% of the total tested area but still good enough to capture the load. Knowing the impact stress could not cause the bone fracture; it can induce local tissue distress or propagate stress wave pulses to the underlying cortex. The data revealed how much the stress was absorbed by the bone and neurovascular structure under an impact. The Ouckama et al. 2010's test faced a challenge with the sensor impact duration and loading rates. At the time, these sensors reading on flexible and curvature surface were