High-frequency electromagnetic non-destructive evaluation for high spatial resolution, using metamaterials

  1. Lookup NU author(s)
  2. Professor Raimond Grimberg
  3. Professor Gui Yun Tian
Author(s)Grimberg R, Tian GY
Publication type Article
JournalProceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences
Year2012
Volume468
Issue2146
Pages3080-3099
ISSN (print)1364-5021
ISSN (electronic)1471-2946
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
This study presents a new high-frequency electromagnetic method for a non-destructive evaluation of metallic strip gratings from printed circuit boards and of some carbon-fibre-reinforced plastic composites, allowing the detection of small defects. The electromagnetic transducer is based on a metamaterial lens realized with two conical Swiss rolls, that allows the transmission and intensification of purely evanescent modes generated in the slits of metallic strip gratings and in the dielectric that insulate the carbon fibres between them. The method and the transducer used allow the localization of metallic strip interruptions whose widths are greater than 0.2 mm, the non-alignment of carbon fibres, the breaking of carbon fibres, the lack of resin or delaminations due to impact at low energies, with spatial resolution being greater than 0.1 mm.
PublisherThe Royal Society Publishing
URLhttp://dx.doi.org/10.1098/rspa.2011.0666
DOI10.1098/rspa.2011.0666
Actions    Link to this publication