The identification method of critical failure mode based on failure information

Aiming at the failure mode analysis of mechanical/electromechanical products, FMMEA (Failure Mode, Mechanism and Effects Analysis) method and FMECA (Failure Mode, Effects and Criticality Analysis) method are integrated, and the failure information of developed products and similar products is considered as prior data, and the comprehensive effect analysis of failure mode is carried out. Furthermore, the weak links of products and their critical failure modes, mechanisms and sensitive stresses are quickly identified, and qualitative and quantitative critical failure mode identification methods are formed according to the analysis requirements. Finally, an electromagnetic valve is analyzed in detail by using quantitative analysis process, and the critical failure modes, weak links and sensitive stresses of the product are determined.