THIS 22.1
HIC Value
HIC Value
| The HIC value is calculated from the resultant acceleration time history of the head centre of gravity filtered through a class 1000 filter. The HIC value is then calculated from; |
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| Where a is the acceleration expressed in g, and t 1 and t 2 are any two points in time. It is now usual for an upper limit on the range t 2 -t 1 of 36ms to be applied. |