New trends by FMEA - Abstract:
Technological progress has brought a large amount of complex machinery into the work processes, which represents a potential source of serious injuries, accidents, or breakdowns. An important step towards the achievement of the organizations safety is the adoption of adequate strategy and security policy.
The aim of the monograph is to follow new trends in the FMEA (Failure Mode and Effect Analysis) and their use in our study. We have chosen the Turning Machine Doosan V-Puma Doosan PUMA V550R Machining Centre with manufacturing diameters and mechanical machining opera-tions. We have created the FMEA team, which participated in the entire evaluation and analysis. We identified possible failures and causes of failures in the given operations. We applied the con-ventional PFMEA and identified the RPN risk number. Then we added the costs of failures to the method and applied Extended FMEA (EFMEA). After determining the costs and calculations, we identified the ERPN risk number. We compared the individual methods (PFMEA - EFMEA) and we also compared the proportion of failures in total risk generation (RPN - ERPN). We proposed measures. We also used DEMATEL model (Decision-Making Trial and Evaluation Laboratory). Using DEMATEL matrices, we identified a binding between the individual failures and the causes of the failures. Some failures will become the main cause of other failures and the causes of the failures; some arise as a result of other failures or causes of failures. Finally, we evaluated the applicability of individual methods and models. The ERPN, in contrast to the conventional FMEA, specifies the risk number. In conventional FMEA, we often think about the severity, occurrence, and detection pa-rameters of risk number generation. After including the costs necessary for elimination of the fail-ures and costs arising from malfunctions, we have obtained another risk prioritization. By the DE-MATEL model we clarified the significance and bindings between individual failures. We recom-mend using these methods and models when applying the FMEA method in manufacturing organi-zations of the manufacturing process.
Key words: FMEA, RPN, ERPN, DEMATEL, Safety, Quality
