Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth

S. Alkhateeb, F. Riccioli*, Felipe Leon Morales, Lotfollah Pahlavan

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

10 Downloads (Pure)


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.
Original languageEnglish
Article number161
Number of pages18
Issue number1
Publication statusPublished - 2023


  • acoustic emission
  • corrosion
  • damage detection
  • localisation
  • marine growth


Dive into the research topics of 'Non-Contact Acoustic Emission Monitoring of Corrosion under Marine Growth'. Together they form a unique fingerprint.

Cite this