Virtual Bookstore Citation Title FREQUENCY EFFECTS ON FLAWED-COMPOSITE FATIGUE RELIABILITY, Author(s) Reifsnider ,K. L. ;Stinchomb ,W. W. ;Williams ,R. S. ;Turgay, H. M. ; Corporate Author(s) VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS Report Date 8/1/1975 Page Count 18 Abstract variations in the degradation and subsequent fatigue reliability oflaminated composite plate specimens with a center hole due to changes in cyclefrequency have been identified and investigated.boron-epoxy and boron-aluminumspecimens were examined, principally for stiffness and strength variations.various combinations of stiffness and strength changes were observed as afunction of cycle frequency and specimen material, including a mode whereinstiffness decreased significantly while residual strength increased. a kineticdamage model was developed and combined with a weibull extreme value expressionto attempt to represent the stochastic aspects of the fatigue process. the modelshows some promise, especially from the standpoint of representing widelyvarying fatigue behavior, including the unusual situation of stiffness drop withstrength increase. frequency dependence is included in the model. Out Of Print Prices are plus sales tax when purchased within New York State and shipping charges, if applicable