Negash, D. (2020). Engineering a low-cost, non-invasive corrosion monitoring system. The Young Researcher, 4 (1), 318-329.
Corrosion is one of the most costly global expenditures. In recent years, a multitude of Non-De- structive Testing (NDT) methods to detect early corrosion in rebar have been developed. However, there are several issues that prevent their wide-scale application. Thus, the goal of this project is to create an accurate, low-cost corrosion monitoring system by using the voltage via an electrical current from a solar cell using an engineering design process. The final device was programmed by an Arduino Uno to export data to a Google Sheets cell. In all the trials, as the cross-sectional cut of the rebar samples increased, the voltage output in the rebar samples decreased, and statistical sig- nificance was later shown. In addition, the transfer time of the voltage readings to a Google Sheets cell was seen to be relatively quick. This system costs roughly $61, making it 51% more economical compared to other Arduino-based monitoring systems.
Keywords: corrosion, electrical current, solar cells, non-invasive, monitoring system, Arduino.