An experimental effort was conducted to assess the neck muscle's biodynamic characteristics using electromyographic (EMG) data collected during a human impact study. EMG data were collected from specific neck muscles of volunteer human subjects before, during, and after the subject was exposed to a vertical impact. Data analysis consisted of the Integrated Threshold Detector method, and then using the integrated EMG to determine muscle recruitment patterns and frequency distributions. The ...
During 1986-1987, eighty-two human impact experiments were accomplished on a vertical deceleration tower to determine the influence of variable seat back angles on human dynamic response to short-duration acceleration applied in the +x axis. Subjects were exposed to acceleration at a level of 10 G using a vertical deceleration tower. The seat back angle varied as follows: (1) +5 deg (5 deg aft of vertical), (2) 0 deg (vertical), (3) ...
A motion analysis system is a critical component in the evaluation of the dynamic response of the human body during impact testing of crew restraint and protection systems. The Selspot motion analysis system was obtained to test and evaluate its performance under impact accelerations produced by a horizontal impulse accelerator. A pendulum-like motion standard was designed and fabricated to be installed on the horizontal accelerator's impact sled. Tests were run ...
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