| EPSRC Reference: |
GR/J15513/01 |
| Title: |
PREDICTION OF THE EARLY STAGES OF CRACK GROWTH IN HIGH TEMPERATURE COMPONENTS (ERCOS) |
| Principal Investigator: |
Webster, Professor G |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Mechanical Engineering |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
04 October 1993 |
Ends: |
03 October 1996 |
Value (£): |
174,231
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Summary on Grant Application Form |
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This research project is aimed at developing a fundamental understanding of the early states of crack growth in high temperature components so that improved safety and lifetime prediction procedures can be produced. Three materials, 1 1/2 Cr 1/2 Mo 1/4 V steel, a 1 Cr 1/2 Mo steel and type 316 stainless steel of industrial relevance will be tested. These alloys will be subjected to static and superimposed cyclic loading conditions. In some cases residual stresses will be deliberately introduced into specimens prior to testing. Test variables that will be examined will include minimum to maximum load ratio, frequency, and dwell period. Some experiments will be interrupted for metallurgical examination to identify the mechanisms of damage, development and crack propagation. Damage mechanics and fracture mechanics concepts will be applied to interpret the data. The influence of residual stress will be established. Cumulative damage laws will be developed for describing creep-fatigue interaction. Limit analysis and finite element methods will be used to provide an assessment procedure for components.
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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.imperial.ac.uk |