| EPSRC Reference: |
GR/S33970/01 |
| Title: |
DARP: Composite bonded repairs for resin infused structures: strength and fatigue performance |
| Principal Investigator: |
Falzon, Professor BG |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Aeronautics |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
17 February 2004 |
Ends: |
16 August 2007 |
Value (£): |
182,973
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| EPSRC Research Topic Classifications: |
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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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Design methods for adhesively bonded joints and repairs of RTM composites require theoretical models to predict both strength and durability. Although analytical and experimental work has been reported on the static strength of bonded composites, little information is available on their fatigue behaviour. Also, most of these studies examined hot-setting adhesives. Cold-setting (epoxy and acrylic based) adhesives have been available for too short a time for their long term mechanical behaviour to have been assessed. It is clearly desirable to characterise the durability of such repairs with a view to their being given a 'permanent' status. With the introduction of low temperature cure (20-60 C), high temperature end-use pre-preg and adhesive film resins this can become a practical possibility. Subject to validation these adhesive films are ideal candidates for practical low cost repairs to existing composite structures and offer the potential for the low cost composite airframes of the future.The proposed work will address some of the basic engineering science issues involved in characterising the static strength and fatigue life of patch repairs of RTM composite structures bonded with low temperature cure adhesives. Repair quality will be assessed with C-scanning, X-ray radiography and vibration testing. The study will include uniaxial compression since this loading mode is more severe than the tensile mode due to instability of delaminated plies and fibre waviness that may introduce premature instability of the axial plies.
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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 |