A unified equation for creep-fatigue

• Published in: International journal of fatigue Vol. 68; pp. 186 - 194
• Main Authors: Wong, E.H., Mai, Y.-W.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2014; Elsevier
• Subjects: Applied sciences; Brazing. Soldering; Creep; Creep (materials); Creep-fatigue; Economic conditions; Exact sciences and technology; Fatigue; Fatigue (materials); Fatigue equation; Joining, thermal cutting: metallurgical aspects; Life prediction; Mathematical analysis; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Solder; Solder; Life prediction; Fatigue equation; Fatigue; Creep-fatigue; Lifetime; Creep; Prediction; Mechanical properties; Soldering

•Coffin–Manson equation Δεp=CoN-βo is a special case of a unified creep-fatigue equation, Δεp=Cos(σ)c(T,f)N-βob(T,f).•The stress function s(σ) incorporates the stress-characteristic of creep.•The creep functions c(T, f) and b(T, f) embody the time-temperature characteristic of creep.•At the referenc...