Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth

Offshore support structures and mooring systems are predominantly subject to corrosion and fatigue. These structures are typically covered with marine growth of various types. Conventional inspection methods for assessment of the structural integrity require access to the cleaned surface of these st...

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Main Authors: Sarjoon Alkhateeb, Filippo Riccioli, Felipe Leon Morales, Lotfollah Pahlavan
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/23/1/161
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author Sarjoon Alkhateeb
Filippo Riccioli
Felipe Leon Morales
Lotfollah Pahlavan
author_facet Sarjoon Alkhateeb
Filippo Riccioli
Felipe Leon Morales
Lotfollah Pahlavan
author_sort Sarjoon Alkhateeb
collection DOAJ
description Offshore support structures and mooring systems are predominantly subject to corrosion and fatigue. These structures are typically covered with marine growth of various types. Conventional inspection methods for assessment of the structural integrity require access to the cleaned surface of these structures; however, the cleaning process is highly undesirable from the technical, economical, and environmental points of view. This paper highlights research on feasibility assessment of detection and localization of corrosion damage under marine growth using acoustic emission (AE). Experiments were conducted on two carbon steel plates, one baseline sample and one covered with artificially fabricated marine growth. The results of accelerated corrosion experiments suggest that corrosion-induced ultrasound signals can be detected with satisfactory signal-to-noise ratio using non-contact AE sensors. Ultrasound waves passing through marine growth showed around 12 dB drop in amplitude when compared to the base plate. A localization algorithm for corrosion induced-ultrasound signals was successfully implemented.
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spelling doaj.art-23fff0f4b10d4ffb92e553bb941380c32023-12-02T00:53:48ZengMDPI AGSensors1424-82202022-12-0123116110.3390/s23010161Non-Contact Acoustic Emission Monitoring of Corrosion under Marine GrowthSarjoon Alkhateeb0Filippo Riccioli1Felipe Leon Morales2Lotfollah Pahlavan3Department of Maritime and Transport Technology, Delft University of Technology, 2628 CD Delft, The NetherlandsDepartment of Maritime and Transport Technology, Delft University of Technology, 2628 CD Delft, The NetherlandsCORROSION Laboratory, 2751 DB Moerkapelle, The NetherlandsDepartment of Maritime and Transport Technology, Delft University of Technology, 2628 CD Delft, The NetherlandsOffshore support structures and mooring systems are predominantly subject to corrosion and fatigue. These structures are typically covered with marine growth of various types. Conventional inspection methods for assessment of the structural integrity require access to the cleaned surface of these structures; however, the cleaning process is highly undesirable from the technical, economical, and environmental points of view. This paper highlights research on feasibility assessment of detection and localization of corrosion damage under marine growth using acoustic emission (AE). Experiments were conducted on two carbon steel plates, one baseline sample and one covered with artificially fabricated marine growth. The results of accelerated corrosion experiments suggest that corrosion-induced ultrasound signals can be detected with satisfactory signal-to-noise ratio using non-contact AE sensors. Ultrasound waves passing through marine growth showed around 12 dB drop in amplitude when compared to the base plate. A localization algorithm for corrosion induced-ultrasound signals was successfully implemented.https://www.mdpi.com/1424-8220/23/1/161acoustic emissioncorrosiondamage detectionlocalisationmarine growth
spellingShingle Sarjoon Alkhateeb
Filippo Riccioli
Felipe Leon Morales
Lotfollah Pahlavan
Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
Sensors
acoustic emission
corrosion
damage detection
localisation
marine growth
title Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
title_full Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
title_fullStr Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
title_full_unstemmed Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
title_short Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth
title_sort non contact acoustic emission monitoring of corrosion under marine growth
topic acoustic emission
corrosion
damage detection
localisation
marine growth
url https://www.mdpi.com/1424-8220/23/1/161
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AT filipporiccioli noncontactacousticemissionmonitoringofcorrosionundermarinegrowth
AT felipeleonmorales noncontactacousticemissionmonitoringofcorrosionundermarinegrowth
AT lotfollahpahlavan noncontactacousticemissionmonitoringofcorrosionundermarinegrowth