The crack of football helmets is a distinct sound and one that a University of Alabama mechanical engineering professor and his student believe could be analyzed as part of a less costly method of measuring the severity of impacts on the field.
UA sophomore Brandon McChristian and UA mechanical engineering professor Steve Shepard, began working last fall on a series of experiments to prove a direct correlation between the sound helmets make when they collide and the energy of the impact. Sources: The Tuscaloosa News, The Crimson White