| EPSRC Reference: |
GR/R45345/01 |
| Title: |
Acoustic-emission detection using in-fibre Bragg grating laser sensors |
| Principal Investigator: |
Tatam, Professor RP |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Engineering |
| Organisation: |
Cranfield University |
| Scheme: |
ROPA |
| Starts: |
02 January 2002 |
Ends: |
01 January 2004 |
Value (£): |
163,755
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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| Panel History: |
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Summary on Grant Application Form |
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The proposal seeks to explore the potential of optical fibre Bragg grating lasers as acoustic wave (AW) sensors to monitor real time structural integrity based on acousto-ultrasonic or acoustic emission systems. DFB and DBR fibre laser cavities with typical gauge lengths of 2-Scm will be employed. The sensitivity of the cavity to acoustic emission signals in the range IOOkHz to IMHz will be investigated and compared with that of a conventional piezoelectric transducer. The possibility of directional discrimination will be explored. Sensor multiplexing will be addressed with up to three sensors experimentally investigated. This would allow a number of sensors to be positioned along a single fibre as well as the potential implementation as strain rosettes. Factors influencing sensor sensitivity and fidelity such as sensor/host interface coupling and mean strain and noise levels in the structure will be explored to confirm the practical viability of the technique outside the optics laboratory.
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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.cranfield.ac.uk |