Abstract
This paper describes an amplifier circuit fabricated by the active-dummy method for atmospheric corrosion monitoring based on strain measurement. The circuit was used to determine the relationship between the voltage and strain. Experiments involving the thickness reduction of low-carbon steel test pieces induced by galvanostatic electrolysis were carried out with the amplifier circuit. The circuit was capable of accurately measuring signals induced by the thickness reduction of the test piece. Moreover, the circuit was assessed for the effects of environmental temperature drift, and was found to exhibit a high tolerance. The proposed amplifier circuit would be suitable for atmospheric corrosion monitoring in many types of infrastructure.
Highlights
Corrosion damages the steel that is used for many types of infrastructure
There is a great deal of research on how to detect corrosion, such as using a radio-frequency identification (RFID) sensor [1,2,3] and the methods involving optic fibers [4,5,6,7,8]
Principle of atmospheric corrosion monitoring (ACM) (Atmospheric Corrosion Monitoring) Sensor Based on Strain Measurement
Summary
Corrosion damages the steel that is used for many types of infrastructure. It causes significant damage to steel, which can lead to catastrophic structural failure. There is a great deal of research on how to detect corrosion, such as using a radio-frequency identification (RFID) sensor [1,2,3] and the methods involving optic fibers [4,5,6,7,8]. These methods are all effective in ensuring the safety level of steel structures. Factors governing atmospheric corrosion are the temperature, dew, precipitation, relative humidity, and nitrate, chloride, and sulfate ions. Precipitation, and relative humidity have a large effect on the corrosion process
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