Guided waves in ship structural health monitoring – a feasibility study

• Autorzy: Roch Emil , Zima Beata , Woloszyk Krzysztof , Garbatov Yordan

Identyfikatory

DOI

10.2478/pomr-2023-0023

• Języki publikacji: EN

Abstrakty

EN

Ships and offshore structures operate in a severe corrosion degradation environment and face difficulty in providing longlasting corrosion protection. The Classification Societies recommend regular thickness measurements leading to structural component replacements, to ensure structural integrity during service life. The measurements are usually performed using ultrasonic thickness gauges and such an approach requires multiple measurements of the corroded structural components. Otherwise, the collected data are insufficient to precisely assess the corrosion degradation level. This study aims to perform numerical and experimental analyses to verify the use of guided ultrasonic waves in defining the corrosion degradation level of the corroded structural components of a ship. The study incorporates the fundamental antisymmetric Lamb mode, excited by piezoelectric transducers attached at the pre-selected points on stiffened panels, representing typical structural ship components. The specimens are exposed to accelerated marine corrosion degradation, the influence of the degree of degradation on the wave time of flight being analysed. The study indicates that guided waves are a promising approach for diagnosing corroded structural components. The signals characterised by a high signal-to-noise ratio have been captured, even for relatively long distances between the transducers. This proves that the proposed approach can be suitable for monitoring more extensive areas of ship structures by employing a single measurement.

Słowa kluczowe

EN

corrosion; guided waves; non-destructive testing; ship structure

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2023
• Tom: nr 2
• Strony: 76--84
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Roch Emil

• Gdańsk University of Technology, Poland

• https://orcid.org/0000-0003-2649-0151

autor

Zima Beata

• Gdańsk University of Technology, Poland

• https://orcid.org/0000-0001-8228-5959

autor

Woloszyk Krzysztof

• Gdańsk University of Technology, Poland

• https://orcid.org/0000-0002-9088-8570

autor

Garbatov Yordan

• Universidade de Lisboa, Portugal

• https://orcid.org/0000-0001-7308-2586

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).