Non-contact excitation of guided waves using air-coupled ultrasonic transmitters for damage detection

Wiesław Ostachowicz; Maciej Radzieński; Paweł Kudela; Michał Jurek

doi:10.1117/12.2514017

1 April 2019 Non-contact excitation of guided waves using air-coupled ultrasonic transmitters for damage detection

Wiesław Ostachowicz, Maciej Radzieński, Paweł Kudela, Michał Jurek

Proceedings Volume 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII; 109711J (2019) https://doi.org/10.1117/12.2514017
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

Guided waves have been extensively explored in the field of Structural Health Monitoring (SHM) and Non-Destructive Testing (NDT) over many years. Guided waves are usually excited and registered by using an array of piezoelectric transducers attached to the surface of the inspected structure. However, in some cases, piezoelectric transducers cannot be used directly on the structure and noncontact wave excitation methods are preferable. This paper is a continuation of authors’ previous research on complete non-contact NDT methods in which low-cost resonant-based ultrasonic transmitters together with scanning laser Doppler vibrometer are used. The aim of the paper is the comparison of guided wave actuation ability in a composite plate by using the single ultrasonic transmitter, flat ultrasonic transmitter array and spherical ultrasonic transmitter array. Full wavefield of propagating guided waves was registered on a fine grid of points by using laser vibrometer and processed by using the wavenumber filtering method. Finally, the accuracy of delamination localization and size was estimated for each actuation setup.

Conference Presentation

Citation Download Citation

Wiesław Ostachowicz, Maciej Radzieński, Paweł Kudela, and Michał Jurek "Non-contact excitation of guided waves using air-coupled ultrasonic transmitters for damage detection", Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109711J (1 April 2019); https://doi.org/10.1117/12.2514017

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