Seamless steel rail detection method and device based on guided wave attenuation and storage medium

Abstract

The invention relates to a seamless steel rail detection method based on guided wave attenuation characteristics, which is characterized in that excitation signals are selectively applied to different parts of a steel rail, and a complex modal separation algorithm is not needed; defect detection is carried out by obtaining the influence function of the temperature on ultrasonic guided wave attenuation, the influence of different temperatures on guided wave signals can be effectively overcome, and the detection accuracy is improved; the false detection rate and the missing report rate are reduced by utilizing a plurality of receiving positions, the defect interval is accurately positioned by further adjusting the receiving positions, and when the excitation positions and the receiving positions form an array, defect detection and positioning are more convenient and quicker. Therefore, the method can improve the reliability and accuracy of defect detection, and is simple and practical.

Description

technical field [0001] The present disclosure relates to the field of seamless basic rail detection, in particular to a method, device and storage medium for defect detection of seamless steel rails based on guided wave attenuation. Background technique [0002] At present, my country's railway transportation is developing in the direction of high-speed passenger transportation, heavy-duty freight, information intelligence, and automatic detection. Ensuring the safety of railway transportation is the core task of railway transportation. Steel rails are an indispensable infrastructure in railway transportation. As a basic part of the track structure, they are the basis for determining the operation of trains. At present, in the infrastructure construction of my country's high-speed railway, the rails laid are all seamless rails. By eliminating the gap between the rails, the length of the rails is extended, the running speed of the train is increased, and the train is more st...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the existing methods for detecting surface and internal defects of seamless rails, the detection range is limited, there are problems of false alarm detection and difficult mode separation, and a method is proposed to realize high precision of rail surface and internal defects, low false positives and no missing negatives The detection method is used to ensure driving safety

Images