Detection of early-stage misalignment the ball screw in feed drive systems is topic addressed this study. The triaxial vibration amplitudes and phases a rotating at nut were extracted using Vold–Kalman filtering order tracking (VKFOT). locus rotation speed its multiplier time domain then constructed to obtain corresponding holospectra. By self-organizing map, features various holospectra quanti...

in this paper a double-shaft turbofan engine is considered to be in the design phase. therefore its environmental condition and critical source of failures has been studied and the subsystems and components has been identified. since it is in design phase, the project encounters to the lack of specified failure data. to overcome this problem, the generic data or expert judgments on the basis of...

This article describes the design of a journal bearing test platform capable high-accuracy film thickness measurements via ultrasonic transducers permanently embedded in both and rotating shaft. A bespoke hydraulic loading system with programmable valves allowed application dynamic loads defined patterns, including simulation patterns found real components such as automotive connecting rod bear...