Combination of DSM and MCDM Methods for Failure Mode and Effects Analysis
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Failure mode and effect and criticality analysis (FMEA) is a safety and reliability analysis tool that systematically identifies the consequences of components failures on a system and determines consequently the impact of each failure mode.
Thanks to its effectiveness, it becomes the principal tool for risk management. However, many researchers consider that it has many weaknesses. The conventional RPN equation has been considerably criticized to be simplistic and strongly sensitive to variations. This equation doesn’t support weight for factors and the obtained result could be inaccurate. Moreover, FMEA need the availability for all data and information before starting the analysis.
This article proposes an improvement of FMEA by the use of the multi-criteria decision methods and the design structure matrix. The DSM method will be used to identify the interactions between failures and the Fuzzy technique for order preferences by similarity to ideal solution (FTOPSIS) will be used to obtain values for each relationship. In the end, this method will be applied to study failures on a product under development.
KeywordsFMECA RPN DSM Fuzzy AHP FTOPSIS
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