A method and system for identifying broken wire damage of a steel wire rope

Abstract

The invention discloses a wire rope broken wire damage recognition method based on wavelet transform and neural network, which belongs to the field of civil engineering structure detection. The method includes the following steps: firstly, using a wire rope detector to detect a wire rope with an unknown number of broken wires, extracting the detected magnetic flux leakage signal and recording parameters such as the diameter of the wire rope and the running speed of the wire rope detector; then, using the multi-resolution feature of wavelet transform and singularity detection ability, perform continuous wavelet transformation on the extracted and detected magnetic flux leakage signal, and record the peak-to-peak value of the transformed wavelet coefficient; then, import the recorded peak-to-peak value and wire rope diameter and other eigenvalues ​​into the trained neural network; Finally, the parameters output by the neural network can be obtained, and the quantitative damage identification of the number of broken wires of the wire rope can be completed. Through the invention, the quantitative identification of the number of wire rope broken wires is realized, and has strong practicability.

Description

technical field [0001] The invention belongs to the field of civil engineering structure detection, relates to a wire rope broken wire damage identification method and system, and more particularly relates to a wire rope broken wire damage identification method and system based on wavelet transform and neural network. Background technique [0002] As engineering materials or devices, steel wire ropes have been widely used in infrastructure projects in my country. With the rapid development of social production and construction, the production and demand of steel wire ropes have continued to grow, and their production efficiency and speed have also increased rapidly. In the process of operation, the steel wire rope is affected by environmental corrosion, uncertain alternating load, mechanical impact, wear, etc., and damages such as broken wires will occur. [0003] Traditional wire rope nondestructive testing methods include Magnetic Particle Testing (MPI), Penetrant Testing ...

AI Technical Summary

Problems solved by technology

However, the wire rope detector can only qualitatively analyze the broken wire damage of the wire rope, but cannot quantitatively analyze the number of broken wires in the wire rope

Moreover, the detection signal is easily affected by external noise and other factors, resulting in insignificant peak and peak values ​​of the signal.

[0005] It can be seen that most of the traditional nondestructive testing methods for steel wire ropes can only detect whether there are broken wires in the steel wire rope, but cannot accurately determine the number of broken wires.

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