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Creep is time-dependent deformation under constant stress at elevated temperature; primary, secondary, tertiary stages.
Trin-for-trin guide
- 1Input stress, temperature, material properties
- 2Calculate creep strain vs. time
- 3Estimate time to rupture
Løste eksempler
Input
High-temperature alloy at 800°C, 100 MPa
Resultat
Creep rate varies with time; tertiary creep accelerates toward rupture
Almindelige fejl at undgå
- ✕Neglecting creep in high-temp designs
- ✕Treating creep rate as constant (it changes)
Ofte stillede spørgsmål
Why does temperature affect creep?
Thermally-activated atomic motion enables permanent deformation.
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