تخمین عمر مفید باقیمانده چرخ دنده ساده با استفاده از سیگنال صوتی و توزیع وایبل

The estimation of the remaining useful life (RUL) of gearbox components has become a critical topic in both industrial applications and academic research. Among the various approaches, acoustic signal analysis has emerged as a particularly effective technique for monitoring gear degradation. In the present study, a system was designed and developed for predicting the remaining useful life of gears based on sound analysis. Accordingly, the system was operated for a total of 60 hours in two stages. Initially, in order to eliminate possible defects resulting from manufacturing and assembly, the system was run for 10 hours under no-load conditions. Subsequently, it was operated for 50 hours under a resistive load applied to the gear.The gear profile was measured using a Coordinate Measuring Machine (CMM) both before the test and after the intended operational period. The results indicated a profile wear of 0.15 mm. Acoustic data were collected from the beginning of operation up to the point where the gear wear reached 0.15 mm. A health index was defined based on the variation in sideband amplitude levels. Using the Weibull distribution, the shape parameter was calculated as 1.001 and the scale parameter as 27345.03. Based on the cumulative distribution function, the remaining useful life of the developed system until reaching a wear level of 0.20 mm was estimated to be 80 hours.