| EPSRC Reference: |
GR/N11766/01 |
| Title: |
EFFECTS OF GEOMETRY AND LOADING ON FRACTURE TOUGHNESS THE USE OF LOCAL APPROACH CONCEPTS |
| Principal Investigator: |
Burdekin, Professor M |
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| Department: |
Manchester Civil and Construction Eng |
| Organisation: |
UMIST |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 2000 |
Ends: |
30 September 2002 |
Value (£): |
91,018
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Summary on Grant Application Form |
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The nuclear industry has a data-base which allows correlations to be made between fracture toughness values in testpieces of size greater than 25mm but surveillance specimens have to be small and -n-service degradation has to be assessecj from smaller specimens, typically of 1OmmxlOmm cross-section. The data obtained from testpieces do not incorporate the full effects of constraint experienced in =hicker sections and the present research is proposed to address this issue by determining local zriteria for brittle and ductile fracture as functions of the constraints developed in small testpieces so that these physically-based criteria can be incorporated into predictions of the behaviour of larger ?ieces. Appropriate local criteria will be determined for both as-heat-treated and degraded material through fracture tests on precracked and notched bars for which the local stress/strain distributions will be calculated by finite element analysis. The validity of existing local approach fracture models will be examined and the models will be modified if necessary. Calculations will be made to predict the behaviour of larger pieces and will be validated experimentally. The aim is to develop a methodology which will allow predictions to be made for full-scale structural components -ncluding weld mis-match and biaxial loading effects.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
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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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