| EPSRC Reference: |
GR/M44200/01 |
| Title: |
ACOUSTIC EMISSION TRACEBLE SENSING AND SIGNATURE DIAGNOSTICS |
| Principal Investigator: |
Jones, Professor BE |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Design and Systems Engineering |
| Organisation: |
Brunel University London |
| Scheme: |
Faraday (PreFEC) |
| Starts: |
01 November 1998 |
Ends: |
31 January 2002 |
Value (£): |
257,112
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| EPSRC Research Topic Classifications: |
| Instrumentation Eng. & Dev. |
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Summary on Grant Application Form |
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Acoustic emission (AE) in the range of 100kHz to 1MHz is created by local pressure (fluid) and mechanical stress (solid) instabilities within, or on the surface of a material. It occurs in discrete bursts which can lead to continuous emission. The output signals from AE transducers are highly dependent upon positioning of the transducers and on ill-defined propagating structures. The relationships between the signals and the mechanical stresses are at present poorly defined. The reseach will address these problems by: (i) development of miniature artificial AE energy sources, principally by using laser generated light probes and optical fibres; (ii) establishing means for traceable calibration of the new AE energy sources; (iii) identifying efficient and effective technique for decomposition and interpretation of AE signals: (iv) validating a dynamical system model for each demonstrator; (v) establishing a robust scheme for signature analysis with statistically reliable estimates; (vi) developing several industrial demonstrators as exemplars. This novel approach to AE transducer calibration, based upon traceable calibrated miniature AE energy sources and using the appopriate signature analysis and in-situ calibration methodology, should significantly reduce the effect on the AE measurement result obtained from an AE transducer of the actual AE propagating structure.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Keywords describing areas of proposalAcoustic emission, optoacoustics, signature analysis, condition monitoring
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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 |
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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.brunel.ac.uk |