The main research intent of this paper is to introduce the use of fault tree analysis (FTA) and failure mode and effects analysis (FMEA) in conjunction to analyse the risk and reliability of a complex mechatronic system in both qualitative and quantitative manner. The major focus is on handling imprecise and vague information with the help of fuzzy synthesis of information. A complex mechatroni...

This paper describes a novel approach, based on intuitionistic fuzzy set theory for reliability analysis of series and parallel network. The triangular intuitionistic fuzzy sets are used to represent the failure possibility of each basic (terminal) event to get more comprehensive results for the failure possibility of the top event. The proposed technique is demonstrated on a web server LOG dat...

2 Zadeh-type fuzzy probability The paper deals with two methods of a fuzzification of the Borel field of events and too the probability measure. The first approach generalizes the Zadeh definition of a crisp probability of fuzzy event. The second method is based on the Yager definition of a fuzzy probability of fuzzy event. The theoretical results obtained can be applied to modeling stochastic ...

Background and Purpose: Survival tree model is a nonparametric method which can be used to identify the affecting factors from a specific time to the onset of an event. In this method, the categories are selected according to the most important factors. The purpose of this study was to determine the factors affecting the duration of breastfeeding in mothers and introduce the homogeneous subgrou...

The Reliability Centred Maintenance strategy aims at deciding predictive maintenance tasks on process equipments. The approaches such as FMEA, HAZOP and FTA are most widely used analytical tools for identifying the predominant failure modes, failure causes and possible remedial measures thereof. The success of predictive maintenance program lies in raising an appropriate ‘Early Warning’ with th...

Oil detection technology improves the reliability of machinery or equipment. The physical and chemical indicators fluid can reflect cause failure in various aspects, which prevent major accidents to greatest extent by setting up a fault tree. Owing lack data, it is difficult accurately obtain basic event probabilities, makes diagnose faults. expert evaluation method aggregated fuzzy numbers are...

The new method for risk assessment of the man-machine system functioning is proposed. The feature of the method is combining the fuzzy fault tree analysis and theory of fuzzy reliability of algorithmic processes. This provides a consideration from a unified framework the structural accidents with algorithms of its detecting and avoiding. Method also allows to use fuzzy “if-then” rules about man...