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Squid-based nondestructive evaluation of carbon fiber reinforced polymer

Carr, C. and Graham, D. and MacFarlane, J.C. and Donaldson, G.B. (2003) Squid-based nondestructive evaluation of carbon fiber reinforced polymer. IEEE Transactions on Applied Superconductivity, 13 (2). pp. 196-199. ISSN 1051-8223

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Abstract

Recent work with HTS SQUIDs in nondestructive evaluation has concentrated on the detection of flaws in aircraft-grade aluminum, with particular emphasis on surface-breaking tears beside rivets. More complex materials are now also being used in aircraft manufacture, with carbon fiber reinforced polymer (CFRP) being one of the most common. Existing technologies such as ultrasound are particularly well suited to the detection of impact-damaged sites and until now there have only been a few reports of eddy current examination of CFRP samples. Here we present results on samples with regions of heat damage, impact damage and with nonmagnetic inserts using eddy current detection techniques. We compare the signal to noise ratio and spatial resolution for a variety of sensors including HTS SQUIDs and gradiometers and conventional induction coils, and discuss variations in detection efficiency with field component measured.

Item type: Article
ID code: 18261
Keywords: CFRP, eddy currents, HTS SQUIDs, nondestructive evaluation, Chemistry, Physics, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Condensed Matter Physics
Subjects: Science > Chemistry
Science > Physics
Department: Faculty of Science > Pure and Applied Chemistry
Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 01 Apr 2010 11:49
    Last modified: 05 Sep 2014 01:20
    URI: http://strathprints.strath.ac.uk/id/eprint/18261

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