Significance and Use Creep-fatigue testing is typically
performed at elevated temperatures and involves the sequential
or simultaneous application of the loading conditions necessary
to generate cyclic deformation/damage enhanced by creep
deformation/damage or vice versa. Unless such tests are
performed in vacuum or an inert environment, oxidation can also
be responsible for important interaction effects relating to
damage accumulation. The purpose of creep-fatigue tests can be
to determine material property data for (a) assessment input
data for the deformation and damage condition analysis of
engineering structures operating at elevated temperatures (b)
the verification of constitutive deformation and damage model
effectiveness (c) material characterization, or (d) development
and verification of rules for new construction and life
assessment of high-temperature components subject to cyclic
service with low frequencies or with periods of steady
operation, or both. In every case, it is advisable to have comp