Laser detection method for cracks of fan blade in operation
A technology for fan blade and laser detection, which is used in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, and material analysis using sonic/ultrasonic/infrasonic waves. obvious problems, to achieve the effect of improving maintenance efficiency, simple measuring instruments, and saving man-hours
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[0032] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0033] Such as figure 1 As shown, a laser detection method for cracks in fan blades in operation includes the following steps,
[0034] S1, collect the distance signal, install a displacement sensor on the fan to collect the distance signal of the blade;
[0035] S2, baseline correction, performing baseline correction on the collected distance signal;
[0036] S3, filtering processing, performing filtering processing on the baseline-corrected signal;
[0037] S4, extracting the vibration amplitude and frequency, independently extracting the vibration amplitude and frequency of each blade;
[0038] S5, data comparison, comparing the vibration mode and amplitude of each blade with the historical data of the blade and the current data of oth...
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