CPC G01N 29/12 (2013.01) [G01N 29/048 (2013.01); G01N 2291/0234 (2013.01)] | 5 Claims |
1. A method for detecting a tension force defect of a steel cable, comprising the following steps:
step S10: providing an excitation sensor on a first position of the steel cable to be detected and providing a detection sensor on a second position of the steel cable;
step S20: obtaining a value of a tension force on the steel cable and obtaining a first display diagram corresponding to the value of the tension force;
step S30: loading a white noise signal on the excitation sensor through a power amplifier;
step S40: acquiring a detection signal collected by the detection sensor within a first preset time period;
step S50: uploading the detection signal to a personal computer (PC) and performing a Fast Fourier Transform (FFT) process on the detection signal to generate a second display diagram showing a natural frequency spectrum and a direct guided wave amplitude;
step S60: determining whether there is a defect in the steel cable according to the first display diagram and the second display diagram, and if so, performing step S70;
step S70: determining a defect position of the steel cable.
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