Premium
THE IMPORTANCE OF FAILURE MODE IN FATIGUE–CREEP INTERACTIONS
Author(s) -
PLUMBRIDGE W. J.,
DEAN M. S.,
MILLER D. A.
Publication year - 1982
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1982.tb01228.x
Subject(s) - creep , materials science , dwell time , microstructure , failure mechanism , structural engineering , ultimate tensile strength , low cycle fatigue , strain (injury) , work (physics) , failure mode and effects analysis , fatigue testing , alloy , metallurgy , composite material , engineering , mechanical engineering , medicine , clinical psychology
— The present work emphasizes the need to understand the processes involved in fatigue–creep interactions before reliable life predictions may be sensibly made. In particular, the simultaneous interaction involving a strain controlled cycle with a dwell period at maximum tensile strain is analysed and the accumulation of fatigue–creep damage computed in terms of strain range, extent of dwell and microstructure. Dominant failure modes are thus identified and the findings are used to explain the apparently different failure mechanisms previously reported for a 1Cr–Mo–V alloy steel and a Type 316 stainless steel. Due to lack of data overall mapping of regimes of dominance is not possible, but in cases where a single mechanism prevails throughout the duration of dwell accurate lifetime prediction may be achieved.