Back to the drawing board. This set back led us to further research of car seat and head restraint designs and the study of hundreds of research papers on the biomechanics of whiplash. After a solid month of research and field testing on hundreds of vehicle makes and models for comfort, our prototype was again ready for the crash tests. The New Jersey Association of Accident Reconstructionists' Joint Conference - Atlantic City, NJ, October 2, 1997. State of the art equipment, accelerometers and computers, are used to accurately measure vehicle speeds, or more specifically the change in velocity of the vehicles.
Volunteers wear a head band fitted with an array of accelerometers.
Computers process the information and provide data plot graphs showing the G force to the head's center of gravity in various agngular and linear paths. These forces are considered the primary indicators for injury. A multitude of information is recorded for each test. The following information was recorded of two comparative tests to evaluate the effectiveness of the Add On Head Rest . . Crash Test Results .