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Automatic Scanning with Multi-frequency Eddy Current on Multilayered Structures

Barend van den Bos, Stefan Sahlén, Joakim Andersson, CSM Materialteknik, Box 1340, 581 13 Linköping, Sweden
E-mail : barend.van-den-bos@csm.se
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Summary

Background

Purpose

Optimisation of single frequencies

Influence of disturbances

Multi frequency testing

Adaption of scanner

Examples of improvements achieved using multi-frequency testing

Conclusions

Future prospects / ideas

Acknowledgements

References

  1. Nondestructive Testing Handbook, Volume 4, Editor P McIntire, ASNT.
  2. J Thompson, Subsurface Corrosion Detection in Aircraft Lap Splices Using a Dual Frequency Eddy Current Inspection Technique, Materials Evaluation, December 1993.

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