About the Author

S.S. Manson was Professor Emeritus, Case Western Reserve University. Professor Manson joined the National Advisory Committee for Aeronautics (the precursor to NASA). He is world renowned for his cutting-edge theoretical and experimental work in stress analysis, fatigue, and the development of the basic relation of low-cycle fatigue behavior (the Manson-Coffin law).
G.R. Halford (deceased prior to publication of this work) was Senior Scientific Technologist, NASA Glenn Research Center, Cleveland, Ohio. Following his education in the Department of Theoretical and Applied Mechanics at the University of Illinois under the guidance of Professor JoDean Morrow, he joined the NASA Center in 1966.