Monitor the Strength of Metal Rods Using FBG Sensor

This study introduces the use of Fiber Bragg Grating sensors to measure strain in civil structures. The research involves two metal rods: one in a non-corroded condition and the other deliberately corroded using synthetic chemicals. To simulate the corrosion process, a solution was prepared using white vinegar (4 teaspoons), freshly prepared 3% hydrogen peroxide, and table salt (1.5 teaspoons). The experimental results revealed that the non-corroded rod experienced a maximum wavelength shift of 5 nm under a 60 kN load. In contrast, the corroded rod exhibited a wavelength shift of 4.9 nm when subjected to a 30 kN load.