Ralph I. Stephens

Ralph I. Stephens
Emeritus Faculty, Mechanical Engineering
(319) 335-6397
1128 Seamans Center for the Engineering Arts and Sciences
Joined the College of Engineering: 
Ph.D., Engineering Mechanics, University of Wisconsin, 1965.
M.S., Theoretical and Applied Mechanics, University of Illinois, 1960.
B.S., General Engineering, University of Illinois, 1957.

Selected Publications:

Stephens, R.I., Fatemi, A., Stephens, R.R. and Fuchs, H.O., Metal Fatigue in Engineering, 2nd edition, Wiley Interscience, New York, 2000, (455 pages).

Pals, T.J. and Stephens, R.I., "The Influence of High R Ration on Mild and Sharp Notched and Unnotched Fatigue Behavior of 1045 Steel with Three Different Heat Treatments," International Journal of Fatigue, Vol. 26, pp. 651-661, 2004.

Sigl, K.M., Hardin, R.A., Stephens, R.I., and Beckermann, C., "Fatigue of 8630 Cast Steel in Presence of Porosity," International Journal of Cast Metals Research, Vol. 17, No. 3, pp. 130-146, 2004.

Stephens, R.I., Bradley, N.J., Horn, J.J., Gradman, J.M., Arkema, J.M., and Borgwadt, C.S., " Fatigue of High Strength bolts Rolled Before or After heat Treatment with Five Different Preload Levels," SAE publication, 2005.

Vo, L.D. and Stephens, R.I., "Effect of Shot and Laser-Peening on SAE 1010 Steel Tubes with Transverse Center Weld Subjected to Constant and Variable Amplitude Loading." ICF 12 Proceedings Ottawa, Canada, July 2009.

Active Scientific and Professional Society Memberships: 
Sigma Xi
Pi Tau Sigma
American Society of Testing and Materials, E08 on Fatigue and Fracture
Society of Automotive Engineers Fatigue Design and Evaluation
Registered Professional Engineer, State of Iowa
Special Fields of Knowledge: 
fracture mechanics
product liability