Improving product quality based on QFD and FMEA Theory--Taking electrofusion joints as an example
A case study is reported which combines Quality Function Deployment(QFD)and Failure Mode and Effects Analysis(FMEA)to improve the quality of electro-fusion fittings.QFD is a useful tool for managing cross-functional design teams and exploring customer needs.FMEA is a qualitative method to determine the critical failure modes for a product,a process or manufacturing equipment during the design stage.FMEA involves investigation and assessment of all causes and effects of all possible failure modes from the earliest product development phase.In this study,QFD was used to identify the critical technical attributes which affect the customer satisfaction the most.FMEA was adopted to identify potential failure models and causes of critical manufacturing processes.Vague and abstract customer requirements(CRs)were obtained through customer visits and interviews and grouped by the Affinity Diagram.Analytic Hierarchy Process(AHP)questionnaire was used to rank the importance of CRs.CRs were then transferred to specific technical attributes(Tas)by House of Quality(HoQ).Manufacturing processes of electro-fusion fittings were analyzed by FMEA and relative solutions were given to failure models with high Risk Priority Number(RPN)indices.By the integration of FMEA into QFD,the product qualification ratio of electro-fusion fittings has increased by 12%based on the improvement of the technical design and manufacturing processes.
QFD AHP FMEA Affinity Diagram electro-fusion fittings
Xuguang TAN Wei XIONG
Weichai Power Co.,Ltd.,Weifang,China School of Management,Zhejiang University,Hangzhou,China
国际会议
西安
英文
427-435
2018-09-21（万方平台首次上网日期，不代表论文的发表时间）