Two automobile intersection collision experiments were conducted under identical crash conditions to evaluate date reproducibility and provide a bases for studying performance differences accompanying changes in important sub variables.Studies were made of collision performance as a function of whether the cars had been involved in a previous more severe impact. Comparison of vehicle dynamics, skid and derris patterns, damage patterns, and cost to repair is provided. Average coefficients of friction operating during specific post contact spin-out trajectories of vehicles were calculated, and related findings discussed. In addition, the difference between laminated and tempered side-window glass for the struck car was evaluated for this particular collision exposure. Triaxial accelerometer, mounted in the heads and chests of anthropometric dummies, safety belt tensiometers and high speed photography provided the principal sources of recorded data. An IBM 7090 computer facilitated data reduction. The relative performances of lap belt vs combination shoulder and lap belts were studied for simulated adult motorists child and infant dummies were used to evaluate special restraining devices.
Abstract