| EPSRC Reference: |
GR/J02049/01 |
| Title: |
PREDICTING STABLE CRACK GROWTH AND THE BRITTLE-DUCTILE TRANSITION IN SEMI-BRITTLE MATERIALS |
| Principal Investigator: |
Roberts, Professor SG |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Materials |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1993 |
Ends: |
31 January 1996 |
Value (£): |
84,969
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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Experiments will be performed on stable crack growth (SCG) and its variation with temperature and strain rate in molybdenum, iron-silicon and MgO. The conditions (temperature/strain rate/precrack depth) at which SCG starts, and the rate of SCG will be monitored by load cycles to leave beach marks on the advancing crack surface and by acoustic emission. These results will be used in development of our existing dislocation dynamic model for the brittle-ductile transition to include the SCG mechanism. The model will be developed from its current two-dimensional simulation motion near crack tips to a full three-dimensional configuration. The aim is to be able to understand crack tip microplasticity in semi-brittle crystals, in particular the balance between crack advance by local anti-shielding and the development of longer-range shielding arrays. The ultimate aim is to produce a predictive model for the BDT of semi-brittle materials near the lower shelf.
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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 |