Early Signal Identification Of Potential Faults In Reinforced Pre-stranded Wire

High-strength steel strands used in engineering structures such as roads and bridges have complex structures. The stranded wire formed by multiple steel wires winding together — known as "armor rods transmission line" — has uneven internal stress distribution. Long-term loads, impacts, or corrosion can damage some individual wires, leading to a decrease in overall load-bearing capacity. Under lateral impact or fatigue load, some armour rod may fracture or undergo plastic deformation.

armour rod in transmission line failure often does not show obvious external cracks or concrete cracking. To address this hidden risk, it is recommended to use non-destructive methods such as acoustic emission monitoring, magnetic flux leakage detection, or micro-stress release detection to assess the condition of in-service armor rods conductor. With high sensitivity settings, these technologies can capture abnormal signals before the steel wire breaks.