Multiaxial creep-fatigue damage

This paper presents an alternative method for extending the various methods of creep-fatigue damage assessment from the uniaxial to general multiaxial regimes. Specifically, the method gives a procedure for determining a reasonable strain range in multiaxial situations where loading may not be proportional. In determining this strain range, factors which influence crack initiation and growth, such as the plane of maximum sheer strain range and the strain normal to that plane, are considered. (Auth.)