| EPSRC Reference: |
GR/M21225/01 |
| Title: |
TOWARDS A DEFORMATION AND LIFING METHODOLOGY FOR THERMOMECHANICAL FATIGUE OF NI BASE ALLOYS |
| Principal Investigator: |
Dunne, Professor FP |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Engineering Science |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
18 January 2000 |
Ends: |
17 January 2002 |
Value (£): |
84,368
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
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Summary on Grant Application Form |
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Much progress has been made in the development of constitutive equations to represent the behaviour of materials under cyclic loading conditions at high temperatures. These equations have generally been based around isothermal conditions. In many applications, however, components are subjected to combined cycles of temperature and stress or strain, where the results of isothermal models are inadequate, because they fail to identify correctly the interaction between deformation modes and damage mechanisms. Engineering components are often subjected to multiaxial stress states which affect both deformation and damage failure. Our aim is to generate multiaxial constitutive equations to describe the stress-strain response, under TMF conditions, of a commercial nickel base polycrystalline alloy within a continuum damage framework which will immediately lend itself to a lifing methodology and to incorporation in finite element routines. This work will increase the accuracy of stress-strain determination for this material and predicted life under typical service conditions. In order to generate the constitutive equations and verify the lifetime predictions, a reliable materials property database is essential. A large portion of this information and further material will be supplied by Rolls-Royce.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |