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Sensing technology using magnetism and IoT technology ‘SenrigaN’ is a non-destructive testing technology currently under development. SenrigaN is a solution that visualizes fracture of internal PC steel wires in concrete structures in real time. By analyzing magnetic data using magnetic sensing and IoT, it is possible to instantly find fracture locations on-site bridges. At the same time, it is necessary to appropriately find whether PC steel wires are fractured. In this study, we used Magnetic Flux Leakage method and using a 3-axis magnetic measurement device to automatically capture the characteristics of changes in the magnetic flux waveform when steel inside concrete breaks and built a model that finds the presence or absence of a break.

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Establishment of Technology to Automatically Determine the Presence or Absence of Steel Wires by Magnetic Data of Pre-tensioned Girder PC Steel Using Non-destructive Testing Device

  • 会议论文

  • 发表日期：

    2025年

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  • Katsunori Teshima,
  • Atsushi Yamada,
  • Shinichiro Okazaki

摘要

Sensing technology using magnetism and IoT technology ‘SenrigaN’ is a non-destructive testing technology currently under development. SenrigaN is a solution that visualizes fracture of internal PC steel wires in concrete structures in real time. By analyzing magnetic data using magnetic sensing and IoT, it is possible to instantly find fracture locations on-site bridges. At the same time, it is necessary to appropriately find whether PC steel wires are fractured. In this study, we used Magnetic Flux Leakage method and using a 3-axis magnetic measurement device to automatically capture the characteristics of changes in the magnetic flux waveform when steel inside concrete breaks and built a model that finds the presence or absence of a break.