Some useful concepts for the designer in treating cumulative fatigue damage at elevated temperaturesThe paper concentrates on three subjects: (1) further development of the double-linear damage rule for cumulative fatigue damage summation in the sub-creep temperature range; (2) a new consideration of the effect of strain reversals in the creep range of materials, whereby reversals that occur later in the histogram can influence the degree of damage caused by earlier loading events; and (3) the application of the minimum-commitment time-temperature parameter to the treatment of creep rupture of multiheats wherein considerable differences in properties of individual heats may occur. Numerical examples and plots are given.
Document ID
19800067958
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Manson, S. S. (Case Western Reserve University Cleveland, Ohio, United States)