Monitoring Monopile Penetration Through Magnetic Stray Field Measurements

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Current methods to infer the penetration of a steel monopile during an offshore installation are rather inaccurate. Since a large number of foundation piles will be installed offshore in the coming years, a reliable technique to infer the penetration depth is vital. This paper proposes a non-contact method to monitor the pile progression into the seabed based on measurements of the magnetic stray field that permeates the air surrounding the structure, eliminating the necessity of a predefined pattern on the pile’s surface. A simple magnetisation model for the monopile is proposed from which the relative motion between the moving pile and a stationary magnetic field sensor can be extracted. Comparison between the measured and simulated stray field data show a promising correlation, providing the basis for the new non-contact monitoring technique that is applicable offshore.
Original languageEnglish
Title of host publicationEURODYN 2020 XI International Conference on Structural Dynamics
Subtitle of host publicationAthens, Greece, 23–26 November 2020
EditorsM. Papadrakakis, M. Fragiadakis, C. Papadimitriou
PublisherEuropean Association for Structural Dynamics (EASD)
Number of pages9
Publication statusPublished - 2020
EventEURODYN 2020: XI International Conference on Structural Dynamics - Athens, Greece
Duration: 23 Nov 201926 Nov 2020

Publication series

NameEASD Procedia
ISSN (Electronic)2311-9020


ConferenceEURODYN 2020
Internet address


  • Pile penetration monitoring
  • Non-contact method
  • Magnetic stray field


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