| EPSRC Reference: |
GR/M21232/01 |
| Title: |
TOWARDS A DEFORMATION AND LIFING METHODOLOGY FOR THERMOMECHANICAL FATIGUE OF NI BASE ALLOYS |
| Principal Investigator: |
Knowles, Dr D |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Materials Science & Metallurgy |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
18 January 1999 |
Ends: |
17 June 2002 |
Value (£): |
222,380
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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 cycle loading conditions at high temperatures. These equations have generally been based around isothermal conditions. In many applications, however, components are subject to combined cycles of temperatures and stress or strain, where the results of such isothermal models are inadequate, because they fail to identify correctly the interaction between 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 lifting methodology and to incorporation in finite element routines. This work will increase the accuracy of stress-strain determination for this material and their 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.cam.ac.uk |