Risk assessment in system FMEA combining fuzzy weighted average with fuzzy decision-making trial and evaluation laboratory
| Autor: | Qing-Lian Lin, Hui Li, Hu-Chen Liu, Jian-Xin You |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Fuzzy weighted average Rank (computer programming) Aerospace Engineering Thin-film-transistor liquid-crystal display Risk management tools Fuzzy logic Computer Science Applications Reliability engineering Effective method Electrical and Electronic Engineering Risk assessment business Failure mode and effects analysis |
| Zdroj: | International Journal of Computer Integrated Manufacturing. 28:701-714 |
| ISSN: | 1362-3052 0951-192X |
| DOI: | 10.1080/0951192x.2014.900865 |
| Popis: | Failure mode and effects analysis FMEA is a risk assessment tool that mitigates potential failures in products, processes or systems before they occur. Although many industries use the traditional FMEA technique, it has been criticised for having several setbacks. First, the current FMEA determines the risk priorities of failure modes by using risk priority numbers RPNs, which require the risk factors, occurrence O, severity S and detection D, to be evaluated in crisp values. Second, the conventional RPN method has not considered the indirect relations between components of a system and is insufficient for complex systems with many subsystems or components. Therefore, a new risk assessment methodology combining fuzzy weighted average with fuzzy decision-making trial and evaluation laboratory fuzzy DEMATEL is proposed in this article to rank the risk of failures in system FMEA. The new method can address some of the inherent limitations of the traditional FMEA. Also, an application to the thin film transistor liquid crystal display TFT-LCD product is presented to demonstrate the proposed FMEA. By comparing with the listed approaches, the results show that the proposed method is a suitable and effective method for prioritisation of failures in system FMEA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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