PSI - Issue 54

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ScienceDirect

Procedia Structural Integrity 54 (2024) 264–270 Structural Integrity Procedia 00 (2023) 000–000 Structural Integrity Procedia 00 (2023) 000–000

www.elsevier.com / locate / procedia www.elsevier.com / locate / procedia

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers Abstract The damage detection in structures using modulation transfer phenomena is a topic of increasing interest. However, the lack of comprehensive knowledge and established signal processing methods have hindered its widespread application. This paper explores the potential of the modulation transfer phenomenon for damage localisation by conducting experiments on test stands with two structures: a damaged and an undamaged beam. A well-defined procedure for processing response signals and damage indicators was established. Before the experiments, modal analysis was conducted to select the appropriate excitation frequency. The presented results include spectra and trends of the damage indicators, demonstrating the viability of using the modulation transfer phenomenon for damage localisation. Furthermore, the vibroacoustic modulation phenomenon was observed during the tests. These findings underscore the potential of modulation transfer techniques in structural health monitoring applications. © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers. Keywords: nonlinear acoustic; modulation transfer; damage localisation; structural health monitoring International Conference on Structural Integrity 2023 (ICSI 2023) Experimental investigation of modulation transfer technique for damage detection of structures Jakub Gorski a , Kajetan Dziedziech a , Andrzej Klepka a, ∗ a AGH University of Science and Technology, Department of Robotics and Mechatronics, al. Mickiewicza 30, Cracow 30-059, Poland Abstract The damage detection in structures using modulation transfer phenomena is a topic of increasing interest. However, the lack of comprehensive knowledge and established signal processing methods have hindered its widespread application. This paper explores the potential of the modulation transfer phenomenon for damage localisation by conducting experiments on test stands with two structures: a damaged and an undamaged beam. A well-defined procedure for processing response signals and damage indicators was established. Before the experiments, modal analysis was conducted to select the appropriate excitation frequency. The presented results include spectra and trends of the damage indicators, demonstrating the viability of using the modulation transfer phenomenon for damage localisation. Furthermore, the vibroacoustic modulation phenomenon was observed during the tests. These findings underscore the potential of modulation transfer techniques in structural health monitoring applications. © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers. Keywords: nonlinear acoustic; modulation transfer; damage localisation; structural health monitoring International Conference on Structural Integrity 2023 (ICSI 2023) Experimental investigation of modulation transfer technique for damage detection of structures Jakub Gorski a , Kajetan Dziedziech a , Andrzej Klepka a, ∗ a AGH University of Science and Technology, Department of Robotics and Mechatronics, al. Mickiewicza 30, Cracow 30-059, Poland

1. Introduction 1. Introduction

Structural health monitoring (SHM) employs nonlinear acoustic techniques for damage detection and localisation. Recently, these methods have gathered heightened attention, primarily because of their sensitivity and straightforward hardware implementation. One group of diagnostic techniques based on nonlinear acoustic phenomena is the phenomenon of vibroacoustic modulation (VAM), reviewed by Pieczonka et al. (2015). This phenomenon is based on the reciprocal modulation of the waves introduced into the structure with damage occurring in it. During tests, 2 sources are usually used to generate independent waves. The first generates a high-powered harmonic wave called a pumping wave. The second also generates a lower-power harmonic wave called the probing wave. During the measurements, the response of the structure is acquired and analysed. On this basis, the structure condition is assessed. Structural health monitoring (SHM) employs nonlinear acoustic techniques for damage detection and localisation. Recently, these methods have gathered heightened attention, primarily because of their sensitivity and straightforward hardware implementation. One group of diagnostic techniques based on nonlinear acoustic phenomena is the phenomenon of vibroacoustic modulation (VAM), reviewed by Pieczonka et al. (2015). This phenomenon is based on the reciprocal modulation of the waves introduced into the structure with damage occurring in it. During tests, 2 sources are usually used to generate independent waves. The first generates a high-powered harmonic wave called a pumping wave. The second also generates a lower-power harmonic wave called the probing wave. During the measurements, the response of the structure is acquired and analysed. On this basis, the structure condition is assessed.

∗ Corresponding author. Tel.: + 48-126-174-865. E-mail address: klepka@agh.edu.pl ∗ Corresponding author. Tel.: + 48-126-174-865. E-mail address: klepka@agh.edu.pl

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers 10.1016/j.prostr.2024.01.082 2210-7843 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers. 2210-7843 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ICSI 2023 organizers.