期刊
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
卷 52, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seta.2022.102306
关键词
Humidity; Sewage corrosion; Fibre Bragg grating; Influence of environmental factors; Optical sensor; Bio deterioration; Sulfuric acid corrosion
资金
- Institution of Engineers (India) [R.6/2/DR/2020-21/DR2021001]
Humidity is an important factor that enhances biogenic acidic corrosion in concrete structures of sewers. This study proposes an optical humidity sensor for deployment in harsh environments like sewer structures, which shows good sensitivity and other evaluation metrics.
Humidity is among the most important environmental factors which enhance the biogenic acidic corrosion in concretes of sewers structures. Deterioration of concrete structures is a significant issue that requires special focus in massive structures such as wastewater treatment plants. The impact of deterioration on structural integrity necessitates distinctive consideration in examining the external factors supporting microbial degradation. External environmental factors such as humidity and temperature enhances the process of microbial degradation demands special monitoring. An Optical based humidity sensor was proposed for deployment in harsh environments like sewer structures. In this study, Bragg Grating coated with polyimide has been experimented with different humidity conditions and sensitivity has been analyzed over a wide range of humidity. It shows the linear Bragg shifts over the range of 11% to 97% with the sensitivity of 2.0 pm/%RH which is an optimum value for sewer environment deployment. Assessment metrics such as resolution, sensitivity, response time and limit of detection(LOD) were also analyzed.
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