计算机应用与软件2018，Vol.35Issue(2)：60-64,140,6.DOI:10.3969/j.issn.1000-386x.2018.02.010
基于PFMEA技术及专家群决策的工艺失效风险评估
PROCESS FAILURE RISK ASSESSMENT BASED ON PFMEA AND EXPERT GROUP DECISION MAKING
摘要
Abstract
The traditional process failure risk assessment is usually based on the limited experience accumulation of experts or similar products manufacturing process.The assessment process has some complexity and cognitive uncertainty.In order to evaluate the process objectively and accurately model the risk of failure, this paper proposed a failure risk assessment process and PFMEA technology based on expert group decision making method.Based on the traditional PFMEA analysis techniques, the team of experts gave the assessment opinion of each process failure mode under the three risk factors of severity, occurrence probability and detectability based on the experience and historical data with linguistic variables.The Euclidean distance between trigonometric fuzzy numbers was used to calculate the similarity of evaluation opinions among different experts so as to obtain the experts'weights under different risk factors and then to obtain the expert opinion after assembly.According to the fuzzy synthesis rule in fuzzy theory,the fuzzy risk priority numbers of failure modes could be obtained,and the exact RPN values could be obtained by defuzzification,and then the risks of technological failure modes could be sorted according to the precise risk priority numbers.The numerical example showed the concrete realization process of this method and verified its validity and feasibility.关键词
工艺失效模式及影响分析/专家群决策/风险评估/三角模糊数Key words
Process failure mode and effects analysis/Expert group decision making/Risk assessment/Triangular fuzzy number分类
信息技术与安全科学引用本文复制引用
陶秋香,涂继亮,陶永辉..基于PFMEA技术及专家群决策的工艺失效风险评估[J].计算机应用与软件,2018,35(2):60-64,140,6.基金项目
国家自然科学基金项目(51167013) （51167013）
江西省科技厅重点研发计划项目(2016BBG70045). （2016BBG70045）
