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Title:Closed form expression for fatigue life prediction at combined HCF/LCF loading
Authors:Jelaska, Damir (Author)
Glodež, Srečko (Author)
Podrug, Srđan (Author)
Files:URL http://facta.junis.ni.ac.rs/macar/macar200301/macar200301-11.html
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:For combined HCF/LCF loading, whose stress history is simplified so that it consists of one LCF stress block with a number of cycles equal to the number of start-up in-service operations and one HCF stress block with all HCF cycles summed-up, we derived the closed form expression for estimating both the crack initiation life and the crack propagation life at combined HCF/LCF loading. As an example of use, Smith and Haigh diagrams were obtained for titanium alloy (Ti-6Al-4V) components, which enable to estimate the fatigue strength for the designed fatigue life, known load ratio and certain number of HCF cycles per one combined stress block.
Keywords:machine elements, fatigue, service life prediction, crack initiation, crack growth, stress history
Year of publishing:2003
ISSN on article:0354-2009
COBISS_ID:8422422 Link is opened in a new window
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Record is a part of a journal

Title:Facta Universitatis
Shortened title:Facta Univ., Mech. Autom. Control Robot.
Publisher:University of Niš
COBISS.SI-ID:4073243 New window

Secondary language

Keywords:strojni elementi, utrujanje, napoved življenjsle dobe, začetek razpoke, širjenje razpoke, časovni potek napetosti


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