Non-Destructive Testing of Reinforced Concrete Utility Poles Based on Electromagnetic Induction

The power industry plays a crucial role as a key foundational sector in the national economy and social development. Reinforced concrete is widely used in various power infrastructure projects, where the quality of the reinforcing steel directly influences the component's resistance to shear, bending, torsion, and earthquake resistance. When the internal steel reinforcement is not designed properly or does not meet the required standards, the overall performance of the reinforced concrete will be severely compromised, leading to significant safety hazards. The quality and safety of reinforced concrete electrical poles used in distribution power lines directly impact the secure operation of the power system. Therefore, during the production, inspection, and maintenance of reinforced concrete electrical poles, it is necessary to conduct non-destructive testing on the quantity, diameter, position, and thickness of the protective layer of the internal steel reinforcement. Thus, researching a nondestructive testing method for assessing the quality of reinforced concrete electrical poles is essential. The non-destructive testing method utilized in this study is based on the electromagnetic induction effect, which utilizes the eddy current effect generated by a magnetic field to test and study the internal steel reinforcement's position, protective layer thickness, spacing, and diameter within the concrete structure. Experimental results indicate that this method accurately measures the position, orientation, distribution, and protective layer thickness of the steel reinforcement inside the electrical poles, providing valuable references for future testing of reinforced concrete electrical poles.