Abstract
Reliability of production processes is a key issue to ensuring a stable system operation, increasing a product quality, and reducing production losses. In this paper we proposed a tool for the analysis of faults in a process and the definition of the most effective way for their elimination. In the centre of the offered framework is FMEA - a reliability analysis type, the most widely used in enterprises. In the paper it is proposed to extend the FMEA by introducing a classification of faults and an estimation of expert opinions for the FMEA parameters. By using the Pareto analysis, it is possible to extract from the FMEA the most critical process failures. To analyse these faults through the Bayesian Belief Network is the most effective way to address them. The Bayesian network structure duplicates the faults classifier structure, therefore this method fits well for this analysis. BBN enables to calculate the probabilities for each fault group based on the error of the manufacturing processes probability. For a more complete analysis of a process we used a structural and dynamic analysis for revealing the bottlenecks of the process, as well as the Fault Tree Analysis and Reliability Block Diagram, which may be built on the base of a structural model of a process and gives the reliability of the system on the whole. On the base of the FMEA data it is possible to calculate an optimal plan of the equipment maintenance for a current process. The framework for the analysis of the production process enables companies of machinery manufacturing enterprises to analyse processes as a whole as well as its parts for efficient forecast of the production process improvement.DOI: http://dx.doi.org/10.5755/j01.mech.18.6.3168
Highlights
In today’s competitive environment companies are increasingly forced to respond to diverse market demands with the alignment of their organizational structure and competitive strategies
A production system and its internal structures have been in the centre of the entrepreneurial activities and plans, which foster adaptation to actual market needs
In the current work we suggest to use the consistency assessment of the expert opinions for increasing the quality of the estimation of the fault mode and effects analysis (FMEA) parameters
Summary
In today’s competitive environment companies are increasingly forced to respond to diverse market demands with the alignment of their organizational structure and competitive strategies. The companies improve their capability, long term flexibility and responsiveness of processes. A production system and its internal structures have been in the centre of the entrepreneurial activities and plans, which foster adaptation to actual market needs. The objective of any factory is to increase the overall production reliability. It means maximization of the current resources output by waste reduction equipment and process reliability. The equipment and process reliability jointly create reliable production
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