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Non-intrusive monitoring of health state of induction machines within industrial process and harsh environments poses a technical challenge. In the field, winding failures are a major fault accounting for over 45% of total machine failures. In the literature, many condition monitoring techniques based on different failure mechanisms and fault indicators have been developed where the machine current...
Remaining useful life (RUL) estimation by monitoring in-situ health of components and systems permits decision-makings in the condition based maintenance policy relying on actual operational states. In this paper, we consider systems subject to competing failures, and determine the remaining useful life distribution at the end of monitoring time. Soft failures consider both the degradation and damage...
When there is limited objective failure data, a method for developing the possibility distribution by subjective assignment strategies is put forward, which is illustrated by the lifetime data from fatigue reliability tests. Based on a limited fatigue life data, a study on reliability analysis of 40 axle-steel is presented, by constructing the possibility distribution function of the locomotive axle...
As the end point of the power system, a distribution system directly connects with the consumers. The reliability of power supply is directly related with consumers. However, uncertainty of the original parameters of components may be caused by lacking of statistical information and the statistic error. It will inevitably produce large errors if we directly use these parameters for evaluation. The...
In modern automotive industry supply chain, selecting suitable suppliers should have strategic view. However, it is multi-objective decisions which have many factors to be given consideration. Evaluation model is a way to realize scientific decision-making. In this paper, principal component analysis should be used to preprocess, and then make an analysis of the integrated evaluation method, TOPSIS...
A new analysis method of reliability test data about low-voltage electrical appliance is proposed based on grey theory, which can be applied to solve small sample size problem. The conception, that is called ??gray stability??, is first proposed and defined notion and derivation of mathematical expression. It has important engineering significance in the field of reliability. The test data about electrical...
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