Work

Experimental investigation on polymer coated fibre bragg grating sensor for temperature measurement in sewer environment

Year: 2025

Type: article

Abstract: • Developed coated FBG sensors to monitor temperature promoting microbial corrosion. • Analyzed humidity's impact on FBG response, optimizing sensitivity and detection limits. • Tested sensor performance in lab and real environments, ensuring practical reliability. Environmental factors significantly influences the structural health of the massive infrastructures like Sewage plant. Under sewer environments, atmospheric factors like temperature and humidity promotes Microbial Induced Corrosion which pose serious risks to structural integrity. Robust and precise monitoring of environmental factors is indeed crucial in sewer structures to identify and mitigate conditions that accelerate Microbial Induced Corrosion (MIC), thereby ensuring the durability and structural integrity of the infrastructure. With this light of investigation, this work focuses on investigation of Fiber Optical based temperature sensor coated with polymeric material which is resilience in harsh sewer and dynamic environments. The performance of the proposed sensor is evaluated under different humid conditions in both lab and in situ environments and achieves the sensitivity of 12.9 pm/°C with the resolution and limit of detection of 0.02325 °C and 0.06979 °C respectively.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2025.104319

Authors: Bharathi Raju, R Kumar, Samiappan Dhanalakshmi, Roman Hrbac, Lukas Demel, Narayanamoorthi R

Institutions: Sathyabama Institute of Science and Technology, SRM Institute of Science and Technology, VSB - Technical University of Ostrava

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,940

Funders: SRM Institute of Science and Technology, European Commission