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Optimal Sensor Placement for Vibration-Based Damage Localization Using the Transmittance Function.

Ilias Zacharakis1, Dimitrios Giagopoulos2

  • 1Department of Mechanical Engineering, University of Western Macedonia, Bakola & Sialvera, 50100 Kozani, Greece.

Sensors (Basel, Switzerland)
|March 13, 2024
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Summary

This study presents a new method for optimal sensor placement using vibration analysis. It identifies the best sensor combinations for damage detection, improving structural health monitoring.

Keywords:
damage detectiondamage localizationsensor placementtransmittance functionvibration-based optimization

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Area of Science:

  • Structural Health Monitoring
  • Mechanical Engineering
  • Vibration Analysis

Background:

  • Traditional sensor placement methods focus on single sensor optimization.
  • Existing techniques often rely on modal information, which can be complex to obtain.
  • There is a need for methods that optimize sensor *combinations* for damage localization.

Purpose of the Study:

  • To develop a methodology for optimal sensor placement for vibration-based damage localization.
  • To propose a novel approach that identifies optimal *combinations* of sensor locations.
  • To enhance the efficiency and effectiveness of damage detection frameworks.

Main Methods:

  • Utilizing a Transmittance Function based on output acceleration signals.
  • Integrating a pre-existing damage detection framework.
  • Evaluating all possible sensor location combinations using simulated damage scenarios.

Main Results:

  • The methodology efficiently provides optimal sensor location combinations.
  • Sensor combinations are ranked based on their sensitivity and effectiveness.
  • The approach leverages output-only information, simplifying the testing procedure.

Conclusions:

  • The presented methodology offers an effective way to determine optimal sensor combinations for damage localization.
  • This approach enhances structural health monitoring by improving damage detection capabilities.
  • The use of Transmittance Functions and simulated damage scenarios provides a robust evaluation framework.