2019-02-262019-02-262017-10-24http://hdl.handle.net/10919/87822The present invention provides a method for testing a helmet that uses a risk function that incorporates both linear and rotational acceleration to predict the helmet's ability to prevent a concussion. In certain embodiments, the testing matrix includes 3 impact energy levels and 4 impact locations, for a total of 12 testing conditions per helmet.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/21/978/097/0.pdf14806595A42B3/046G01N3/30G01M7/089797821