Projects
Projects: Projects for Investigator |
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| Reference Number | GR/S43764/01 | |
| Title | A mechanical test for remanent creep life. | |
| Status | Completed | |
| Energy Categories | Not Energy Related 80%; Other Power and Storage Technologies(Electric power conversion) 20%; |
|
| Research Types | Basic and strategic applied research 100% | |
| Science and Technology Fields | ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 100% | |
| UKERC Cross Cutting Characterisation | Not Cross-cutting 100% | |
| Principal Investigator |
Dr M Evans No email address given Engineering Swansea University |
|
| Award Type | Standard | |
| Funding Source | EPSRC | |
| Start Date | 01 December 2003 | |
| End Date | 30 November 2006 | |
| Duration | 36 months | |
| Total Grant Value | £174,102 | |
| Industrial Sectors | Energy | |
| Region | Wales | |
| Programme | Materials, Mechanical and Medical Eng | |
| Investigators | Principal Investigator | Dr M Evans , Engineering, Swansea University (99.999%) |
| Other Investigator | Professor R Evans , Engineering, Swansea University (0.001%) |
|
| Industrial Collaborator | Project Contact , National Physical Laboratory (NPL) (0.000%) Project Contact , GenExP Limited (0.000%) Project Contact , RWE Innogy (0.000%) Project Contact , Institute for Energy and Transport (IET), Joint Research Centre (JRC), Petten, The Netherlands (0.000%) |
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| Web Site | ||
| Objectives | ||
| Abstract | The estimation of remanent life for high temperature plant is best performed through post exposure creep testing. Conventional creep specimens are large and their removal from components often destroys their useful service life. The small disc creep test eliminates this difficulty but the interpretation of the test results is difficult and at present entirely empirical. This research will properly characterise the mechanics of the disc creep test so that quantitative estimates of remanent lifecan be made. It will build a finite element model of the test, which will be verified using existing in house disc creep tests on virgin and creep damaged rotor steels. The model will be elastic-viscoplastic and will incorporate real creep properties obtained from the IRC (Swansea) data bank. A critical part of the model will be the inclusion of work hardening, thermal softening and Kachanov type damage accumulation. The accumulation rates will incorporate the effects of general three dimensional stress states.The model will then be used optimise the test conditions (geometry, surface conditions etc.) so that the test has the maximum sensitivity to pre-imposed levels of damage. The optimisation will be through Response Surface Methodology. The work will include an analysis of variability so that the effects of scatter can be estimated. The overall research will produce a auide to aood practice disc creep testing and will provide a quantitative methodology for remanent life estimation | |
| Publications | (none) |
|
| Final Report | (none) |
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| Added to Database | 01/01/07 | |
