3. Model
prediction
3.1 Key outputs
A typical load waveform in stress-controlled creep-fatigue with initial
compression under σ s∈[-150, 150] MPa andT =550 ˚C is shown in Fig. 4. The first cycle is presented for
illustration purpose, and the following cycles are the same. It consists
of a pre-compressive stress hold for a period t cand a tensile stress hold t t. The magnitude of
stress applied during compression is designated as
Δσ c, and the stress applied during tension is
Δσ t. The stress variation rate during load
reversal is constant, symbolised as . Table 2 summarises the default
value for load waveform parameters and test temperature. They are used
to elaborate the key model outputs. A total number of 50 cycles have
been calculated.