Abstract
Abstract To investigate the pressure response characteristics of head physical surrogate under different sensor arrangement methods, the experimental study on the pressure measurement inside circumferent confined gelatin under the shock waves was conducted. A setup of one-dimensional pressure wave flatbed was constructed, consisting a pneumatic launcher, PVC pipe, and water. The pressure wave of three sensor arrangement methods were compared. The result shows that the three sensor arrangement methods have minimal influence on pressure testing results inside circumferentially constrained gelatin. When the sensitive surface flush with the inner wall (A1) is chosen as a baseline, the peak pressure and impulse differ by less than 3.44% and 5.14% in sensor arrangement method with sensitive surface flush with the pipe center (A2), and by less than 6.75% and 5.83% in sensor arrangement method with sensitive surface into a conical platform flush with the center of the pipe (A3). Smooth and reliable one-dimensional pressure waves can be obtained by the pressure testing method. The one-dimensional pressure wave obtained using this method can effectively be used to study the damage mechanisms of shock waves on the brain and air-containing organs.
Published Version
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