Effects of stress ratio on fatigue crack propagation in Q1N (HY80) pressure vessel steel
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2015, Engineering Fracture MechanicsCitation Excerpt :Whereas in the unstable regime where extensive yielding presented at the crack tip, crack closure load was decreased with the extension of crack length until little or no closure occurred [121]. Soboyejo and Knott [122] explained the different crack closure level among various R by considering the increase of crack opening displacement with the increase of R and ΔK in the near-threshold regime. Dubey et al. [15] developed a three-parameter multiple regression model to describe FCG rate as a function of R, crack closure and ΔK for Ti–6Al–4V.
An investigation of the effects of microstructure on dwell fatigue crack growth in Ti-6242
2005, Materials Science and Engineering: AAn investigation of the effects of colony microstructure on fatigue crack growth in Ti-6Al-4V
2001, Materials Science and Engineering: A
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W.O. Soboyejo was a graduate student at the Department of Materials Sciences & Metallurgy and is now a research scientist with the McDonnell Douglas Research Laboratories in St Louis.
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Dr. J.F. Knott was a Reader with the Materials Science and Metallurgy Department at Cambridge University and is now Head of the Department of Physical Metallurgy at the University of Birmingham.