Improving industrial inspections combining high-frequency flexible ultrasonic arrays and coded excitation

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Germano, Elmergue and Tabatabaeipour, Morteza and Mohseni, Ehsan and Gachagan, Anthony and Lam, Koko and Lines, David (2023) Improving industrial inspections combining high-frequency flexible ultrasonic arrays and coded excitation. In: BINDT - 60th Annual British Conference on NDT (NDT 2023), 2023-09-12 - 2023-09-14, Northampton, UK.

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Abstract

In this study, a commercial 20-MHz 64-element 1 mm-pitch flexible linear array, developed by Novosound Ltd, was evaluated using two different coded excitation techniques to enhance the signal-to-noise ratio and operability on flat and complex-geometry components. Chirp and Golay coded excitation techniques were employed with an arbitrary waveform generation tool to excite the array. A pulse compression technique consisting of a matched filter was implemented, weighted by a Chebyshev window for Chirp excitation.

ORCID iDs

Germano, Elmergue ORCID logoORCID: https://orcid.org/0000-0003-2499-6458, Tabatabaeipour, Morteza, Mohseni, Ehsan ORCID logoORCID: https://orcid.org/0000-0002-0819-6592, Gachagan, Anthony ORCID logoORCID: https://orcid.org/0000-0002-9728-4120, Lam, Koko and Lines, David ORCID logoORCID: https://orcid.org/0000-0001-8538-2914;
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