| EPSRC Reference: |
GR/R44362/01 |
| Title: |
Bragg grating sensor fabrication, testing and evaluation for application to engineering structures |
| Principal Investigator: |
Sun, Professor T |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Engineering and Mathematical Sci |
| Organisation: |
City, University of London |
| Scheme: |
Fast Stream |
| Starts: |
12 June 2001 |
Ends: |
11 June 2003 |
Value (£): |
60,383
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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| EPSRC Industrial Sector Classifications: |
| Manufacturing |
Communications |
| Construction |
Energy |
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| Related Grants: |
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| Panel History: |
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Summary on Grant Application Form |
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Monitoring of structures, whether in concrete, composites, aeroengines or a wide range of industrial materials, or in the oil industry, is a key aspect for safety, extended lifetime of use and added value for industry. Optical methods offer a number of interesting possibilities to create new monitoring methods and systems which are immune to electromagnetic interference, being light in weight and have the potential to be multiplexed in a simple wad Bragg gratings written into fibres have revolutionized intrinsic fibre optic sensors, by being simple and convenient to use. However, the avilable techniques incorporating Bragg gratings for strain and temperature monitoring are limited by their sensing range especially at high temperature region.This work aims to combine the powerful Bragg grating approach with the versatile fluorescence decay time approach to create a unique sensor schem by using Bragg gratings written in rare-earth doped fibres with the potential for multiplexing to achieve a simple yet effective sensor network. This unique technique benefits from high temperature characteristics of rare-earth doped fibre which offers the possibility of high temperature compensatio of several measurands. The project will focus upon the setting up and evaluation of the grating fabrication facility, the optimization of the fabrication process for the special sensors, the investigation of the parameters of the system and signal processing scheme and thus the determination of the potential for both wavelength- and time-division multiplexing to create a unique, simple, inexpensive sensor networking concept.
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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.city.ac.uk |