Application of acoustic emission technology in fault location of bearing outer ring

The one-dimensional linear Time Difference Of Arrival (TDOA) location technique is proposed to study the propagation of the acoustic emission signal on the outer ring of the RV reducer. In this paper, we perform the lead break experiments on the outer cylinder bearing of the RV reducer and use the threshold analysis method to calculate the difference of arriving times on sensors. The propagation speed of the signal in the outer race of the bearing is also measured. We find the location of the AE source by using TDOA, and compares with the true broken position to do the error analysis. The analysis results verify the feasibility of the fault location on the bearing with acoustic emission technology.