Crack Propagation Studies

David G. LewickiU.S. Army Research Laboratory, Lewis Research Center, Cleveland, OhioAshok D. Sane and Raymond J. DragoBoeing Defense and Space Group, Philadelphia, PennsylvaniaPaul A. WawrzynekCornell University, Ithaca, New YorkPrepared for the Fourth World Congress on Gearing and Power Transmissionsponsored by the Institut des Engrenages et des TransmissionsParis, France, March 16-18, 1999National Aeronautics andSpace AdministrationLewis Research Center