| EPSRC Reference: |
GR/J07037/01 |
| Title: |
NEW APPROACHES TO ELECTROMAGNETIC NDE,INC. MATERIAL CHAR.USING ADV. SQUID TECH. |
| Principal Investigator: |
Donaldson, Professor GB |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Physics |
| Organisation: |
University of Strathclyde |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
16 March 1994 |
Ends: |
15 March 1997 |
Value (£): |
190,261
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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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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Elementary SQUID NDE can detect surface and interior flaws in magnetic and non- magnetic materials without contact with the test subject. As high-Tc superconducting devices develop, an increasing number of applications will be identified. Here, we propose some fundamental studies of more advanced techniques for flaw characterisation and stress measurement. The work has two themes. The first is novel experimental mapping methods and the second is finite element modelling to relate measured maps of magnetic properties to actual flaw characteristics. Our experiments will be concerned primarily with AC measurements, exploiting the sensitivity of the SQUID and the skin depth of magnetic and non-magnetic metals (including mild and stainless steels). AC flow around flaws will be mapped with greater sensitivity than is possible using other techniques, then related to the physical properties of the test subjects. Similar studies will be carried out on surface wave impedances to provide depth dependent information on average conductivity, and hence the possibility of detecting flaws deep below the surface. Mapping techniques using the same equipment will also be applied to permeability, hysteresis and Barkhausen noise studies, in the expectation that results can be correlated with flaw or stress distribution. For each experiment, we will explore the use and limits of modelling based on a commercial FEM package and various programs, developed or enhanced as part of our work, for both forward and inverse problems.
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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.strath.ac.uk |