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DIVULGATION ARTICLES

Our Scientific publications, thesis, methods for innovation, and divulgation articles.

Subwavelength resolution of delaminations

Subwavelength resolution of delaminations
This paper was presented in 8th International Symposium on NDT in Aerospace, November 3-5, 2016

Abstract: In this paper, we demonstrate the application of a holey structured metamaterial lens for sub-wavelength imaging
of defects in a laminated metallic sample in the ultrasonic regime. Finite Element (FE) simulations are used to
study longitudinal wave interaction with ideal delaminations in isotropic elastic materials. Holey-structured
metamaterial lens is then used to transmit the scattered wave field. This paper discusses the subwavelength
resolution of λ/7 delamination in a laminated aluminium sample which to the best of our knowledge this is the
highest resolution achieved in the ultrasonic regime.
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November 2016

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