A study on net risk estimation taking human harm avoidance characteristics into consideration

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The study concerns investigation into human harm-avoidance action characteristics for estimating a net risk when a mechanical hazard attacks human eyes. A psychological experiment is conducted in the situation where a sharp endeffector tip of a robot suddenly approaches the eyes of healthy young facing participants. First, we found by a nonparametric test a significant difference of the characteristics between individuals. Second, we developed an extrapolation simulation to observe a virtual collision between the robot and a human model with human cognitive aspect taken into account. Finally, we developed a dummy eye to investigate the avoidance/mitigation possibilities for estimation of the severity of eye injury.