Description to Fe-C Alloy Film Fiber Corrosion Sensors by Fractal Corrosion Images

In this paper, the fractal dimensions are proposed for characterizing the optical fiber corrosion sensors, which is applied to measure the steel corrosion based on Fe-C alloy film. Because corrosion was a complex random phenomenon and the corrosion surface of Fe-C alloy film of the optical fiber corrosion sensor possessed fractal characteristics, the image fractal dimensions is as a quantitative index of the sensor corrosion degree. The experimental results showed that the complexity level of the sensor surface morphology increased and the optical output power increased along with the increase of fractal dimensions. And the sensing law of the thicker Fe-C alloy film is better than that of the thinner film. Therefore, it is feasible that the fractal dimension is used to characterize the Fe-C alloy film optical fiber corrosion sensors and it is also optimistic to the future prospect of the Fe-C alloy film optical fiber corrosion sensors.