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Minimal Information Data-Modelling (MID) and an Easily Implementable Low-Cost SHM System for Use on a Short-Span

Connor O'Higgins1, David Hester1, Patrick McGetrick2

  • 1School of Natural and Built Environment, Queen's University Belfast, University Road, Belfast BT7 1NN, UK.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
Summary

Minimal Information Data-modelling (MID) offers a cost-effective solution for structural health monitoring (SHM) on bridges. This vibration-based approach reliably detects small frequency shifts indicative of damage, making bridge monitoring more accessible.

Keywords:
data modellingenvironmental effectslong-term bridge monitoringlow-costregressionstructural health monitoring

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Area of Science:

  • Engineering
  • Civil Engineering
  • Structural Health Monitoring

Background:

  • Structural Health Monitoring (SHM) ensures structural safety and performance.
  • Vibration-based monitoring is cost-effective but typically requires dense sensor networks.
  • Logistical challenges limit vibration-based SHM application on short- and medium-span bridges.

Purpose of the Study:

  • To investigate the feasibility of Minimal Information Data-modelling (MID) for monitoring short- and medium-span bridges.
  • To assess if MID can detect small frequency shifts indicative of structural damage.
  • To demonstrate a cost-effective approach for widespread bridge network monitoring.

Main Methods:

  • Proposed Minimal Information Data-modelling (MID) using low-cost, easily implementable sensors.
  • Investigated the feasibility of MID for short- and medium-span bridge monitoring.
  • Assessed the ability of MID data models to detect frequency shifts.

Main Results:

  • MID data models reliably detected frequency shifts as low as 0.01 Hz.
  • This detection level is comparable to shifts reported in bridge damage cases.
  • The cost of data collection equipment was approximately £370.

Conclusions:

  • MID is a feasible approach for monitoring short- and medium-span bridges.
  • The accuracy of MID suggests its potential as a damage detection method.
  • The low cost of MID enables network-wide bridge monitoring.