On the Fatigue Behaviour and Modelling of Fatigue Life for Laser-welded Ti-6Al-4V

On the Fatigue Behaviour and Modelling of Fatigue Life for Laser-welded Ti-6Al-4V PDF Author: Fedor Fomin
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Languages : en
Pages : 0

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Book Description
This aim of this work is to investigate the fatigue behaviour of laser-welded Ti-6Al-4V titanium alloy in the region of high cycle fatigue. The crack initiation mechanism and the influence of weld defects on fatigue performance were comprehensively studied. A set of post-weld treatments that can mitigate the effect of inherent weld imperfections and thereby extend the fatigue life were analysed. A robust and efficient analytical assessment model for internally-flawed materials has been developed based on a fracture mechanics approach. The developed methodology can be used for the reliability assessment of components with various types of defects, thus enabling a defect-tolerant design of welded structures.