International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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Modal Flexibility-based Damage Detection Technique of Steel Beam by Dynamic Strain Measurements Using FBG sensors

Park, Hyun-Jun;Koo, Ki-Young;Yun, Chung-Bang

  • Published : 20070300
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Abstract

The development of smart sensors for structural health monitoring and damage detection has been advanced remarkably inrecent years. Nowadays fiber optic sensors, especialy fiber Bragg grating (FBG) sensors, have atracted many researchers’interest for their atractive features, such as multiplexing capability, durability, lightweight, electromagnetic interferenceusing FBG sensors are presented. An experimental study was conducted to investigate the feasibility of the method for damagedetection and localization. It has been found that the strain-flexibility aproach using dynamic strain measurements from FBGsensors can successfully detect and localize multiple small damages near the sensors. However, the damage detection range ofthe present short-gage FBG sensors seems rather narow. Long-gage FBG sensors would be a possible solution.

Keywords

References

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