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The utilization of fluorescence-based optical sensors has become widespread for the detection of aggressive chemical substances such as chloride ions. Recent developments in engineering have proven its potential to serve as a non-destructive measurement tool for monitoring the health of structures exposed to harsh environments. This paper introduces the design principles and structural attributes of a novel optical sensor employing fluorescence-based calcium-alginate hydrogel. The performance of the sensor was characterized by various durability tests conducted in laboratory conditions simulating extreme environmental scenarios. The results elucidated the evolution of fluorescence intensity, stability, and reproducibility over time, highlighting its strong potential for in-situ measurement of chloride concentrations in marine environments. The sensor should be a promising tool for the health monitoring of marine structures.

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Measuring Chloride-Induced Structure Corrosion in Marine Environment: A Characterization Study of Fluorescence-Based Optical Sensor

  • 会议论文

  • 发表日期：

    2025年

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  • Xuande Chen,
  • David Conciatori,
  • Zhao Chen,
  • Sanchez Thomas,
  • Meriem Dhouib

摘要

The utilization of fluorescence-based optical sensors has become widespread for the detection of aggressive chemical substances such as chloride ions. Recent developments in engineering have proven its potential to serve as a non-destructive measurement tool for monitoring the health of structures exposed to harsh environments. This paper introduces the design principles and structural attributes of a novel optical sensor employing fluorescence-based calcium-alginate hydrogel. The performance of the sensor was characterized by various durability tests conducted in laboratory conditions simulating extreme environmental scenarios. The results elucidated the evolution of fluorescence intensity, stability, and reproducibility over time, highlighting its strong potential for in-situ measurement of chloride concentrations in marine environments. The sensor should be a promising tool for the health monitoring of marine structures.