Naslov
Fatigue Behaviour of Ti−6al−4v Alloy Subjected to Combined HCF/LCF Loading

Autori
Jelaska, Damir

Izvornik
Advanced engineering (1846-5900) 9 (2015); 25-36

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Combined HCF/LCF loading; Ti-6Al-4V; Fatigue limit

Sažetak
The closed form expressions are derived for estimating both the crack initiation life and the crack propagation life at combined HCF/LCF loading for the combined high cycle fatigue fatigue (HCF) and low cycle fatigue/(LCF) loading of the Ti-6Al-4V titanium alloy, which stress history is simplified in the way that it consists of one LCF stress block with number of cycles equal to the number of start-up in-service operations and one HCF stress block with summed-up all HCF cycles, the closed form expressions are derived for estimating both the crack initiation life and the crack propagation life at combined HCF/LCF loading. As an example of the use, Smith and Haigh diagrams are obtained for the components made of titanium alloy Ti-6Al-4V, which enable the fatigue strength estimation for designed fatigue life, known load ratio and certain number of HCF cycles per one combined stress block.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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