Abstract
This paper contributes to improving the limitations of traditional failure mode and effect analysis. This paper proposes a novel risk assessment approach using intuitionistic fuzzy numbers based quality function deployment (QFD) and VIKOR (VIsekriterijumska optimizacija i KOm-promisno Resenje) approach. QFD approach based on intuitionistic fuzzy numbers handles the correlation among design requirements (DRs), correlation among customer requirements (CRs), relationship between CRs and DRs for each criterion occurrence, severity, and detection. Intuitionistic fuzzy numbers ensure an advantage to present more accurate and easier the judgments of the experts. This paper examines occupational accidents related failure modes in shipbuilding so that occupational accidents and failure modes mean CRs and DRs, respectively. QFD approach introduces an advantage to handle the relation between occupational accidents and failure modes. QFD approach defines the weights of DRs for each criterion. The weights of occurrence, severity, and detection are determined by using intuitionistic fuzzy numbers to the judgments of experts. These weights are integrated in VIKOR approach based on intuitionistic fuzzy numbers. The result of VIKOR approach presents the ranking of the occupational accidents related failure modes in shipbuilding. The highest risky failure mode in shipbuilding is defined as the lack of nets on ship scaffolds.
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