关键词: 故障模式与影响分析, 犹豫模糊集, 词计算, 决策与试验评价实验室, 多准则妥协解排序方法

Abstract: The traditional Failure Mode and Effects Analysis (FMEA) did not consider the mutual influence relationships among risk or failure modes.The DEMATEL method was used to analyze the net influence degrees of risk modes,and then these degrees were used to revise the initial assessed severity of failure modes.To deal with the problem that traditional fuzzy set could not permit the membership with a set of possible values,the hesitant fuzzy linguistic term and semantic-based computation method were used to express and deal with the evaluation information in FMEA and DEMATEL.The rough set idea was applied to transfer the hesitant fuzzy linguistic term set into interval-valued number to cope with the hard computing problem brought by inconsistent granularity among different hesitant fuzzy linguistic terms.The hesitant fuzzy  VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method was used to evaluate the severity,frequency and detection of failure modes.A case study of failure assessment for a crane was presented to illustrate the effectiveness of the proposed method.

Key words: failure mode and effects analysis, hesitant fuzzy set, word computing, decision-making and trial evaluation laboratory, vlse kriterijumska optimizacija I kompromisno resenje