Ultrasonic modulated waves for diagnostics of concrete elements in bending
Błażej Meronk
Department of Structural Mechanics and Bridges; Faculty of Civil and Environmental Engineering; Gdansk University of Technology (Poland)
https://orcid.org/0000-0002-3154-5068
Krzysztof Wilde
Department of Structural Mechanics and Bridges; Faculty of Civil and Environmental Engineering; Gdansk University of Technology (Poland)
https://orcid.org/0000-0001-6878-3126
Abstract
The paper presents the experimental study on the diagnostics of concrete elements with the use of nonlinear acoustic effects. The tests were conducted on a concrete plate subjected to ultrasonic waves modulated with and without an additional low frequency actuator. The experimental results showed that the new method based on the direct modulation of diagnostic ultrasonic waves also provided sub-harmonic frequencies that indicated the presence of damage. The new method does not require a low frequency actuator for generation of low frequency oscillations, and therefore, is more suitable for practical application.
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Meronk B., Wilde K. Diagnostyka zginanej płyty betonowej z zastosowaniem fal ultradźwiękowych modulowanych drganiami niskich częstotliwości. 59 Konferencja Naukowa KILIW PAN oraz KN PZITB Krynica 2013.
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Authors
Błażej MeronkDepartment of Structural Mechanics and Bridges; Faculty of Civil and Environmental Engineering; Gdansk University of Technology Poland
https://orcid.org/0000-0002-3154-5068
Authors
Krzysztof WildeDepartment of Structural Mechanics and Bridges; Faculty of Civil and Environmental Engineering; Gdansk University of Technology Poland
https://orcid.org/0000-0001-6878-3126
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