Premature fatigue fractures in structural components are a major problem in the manufacturing industry. The challenge for modellers has been to deliver reliable fatigue-analysis tools, because over-designing components is becoming an increasingly unattractive solution to the problem. Currently software packages exist for fatigue simulation of components or systems. However, a common feature of such software is that they all require the fatigue properties of the materials used. When such information is not available, the fatigue simulation cannot proceed until relevant experimental measurements are carried out, which can be both time-consuming and very costly. It is the aim of the current work to help solve this dilemma by developing models that can calculate the strain-life relationship not only at room temperature but also high temperatures. This work extends previous successful models for predicting the monotonic material properties of commercial alloys as a function of alloy chemistry, heat treatment, temperature and strain rate. In the present paper, attempts are made to model the high temperature fatigue properties of some engineering alloys. The effect of strain rate and cyclic loading frequency on fatigue properties are also discussed.
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ASME 2007 Pressure Vessels and Piping Conference
July 22–26, 2007
San Antonio, Texas, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4287-8
PROCEEDINGS PAPER
Modelling the Strain-Life Relationship of Commercial Alloys
Zhanli Guo,
Zhanli Guo
Sente Software Ltd., Guildford, Surrey, UK
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Nigel Saunders,
Nigel Saunders
Sente Software Ltd., Guildford, Surrey, UK
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Peter Miodownik,
Peter Miodownik
Sente Software Ltd., Guildford, Surrey, UK
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Jean-Philippe Schille
Jean-Philippe Schille
Sente Software Ltd., Guildford, Surrey, UK
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Zhanli Guo
Sente Software Ltd., Guildford, Surrey, UK
Nigel Saunders
Sente Software Ltd., Guildford, Surrey, UK
Peter Miodownik
Sente Software Ltd., Guildford, Surrey, UK
Jean-Philippe Schille
Sente Software Ltd., Guildford, Surrey, UK
Paper No:
CREEP2007-26074, pp. 281-287; 7 pages
Published Online:
August 20, 2009
Citation
Guo, Z, Saunders, N, Miodownik, P, & Schille, J. "Modelling the Strain-Life Relationship of Commercial Alloys." Proceedings of the ASME 2007 Pressure Vessels and Piping Conference. Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures. San Antonio, Texas, USA. July 22–26, 2007. pp. 281-287. ASME. https://doi.org/10.1115/CREEP2007-26074
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