Journal of Engineering Research

This paper presents a study on the detection and assessment of corrosion in the internal wires of horizontal cables on the Lupu Bridge using magnetostrictive ultrasonic guided wave measurement technology. A magnetostrictive ultrasonic detection method is proposed, which utilizes the magnetostrictive effect to generate ultrasonic waves for non-destructive testing of the internal structure of the horizontal cables. To verify the accuracy of the detection, a windowed validation approach is employed, involving multiple tests on wire samples from different locations and comparative analysis with the actual windowed conditions. Experimental results demonstrate that this method effectively identifies corrosion defects within the wires and enables quantitative assessment of the corrosion degree through characteristic analysis of waveform signals. The findings provide a novel, efficient, and validated technological approach for corrosion detection in the cables of large-span bridges, offering significant value for engineering applications.

Magnetostrictive Ultrasonics; Guided Wave Measurement; Evaluation Method; Horizontal Cable; Corrosion Detection