Research For Based On FMEA On Domestic Components Application Reliability Evaluation

Based on FMEA(Failure Model and Impact Analysis)on domestic components application reliability evaluationis one of the important contents of localization of components and components.With the ever-changing international form and the continuous improvement of the manufacturing level of domestic components,the original imported components used in weapons and equipment began to gradually emerge as substitutes for domestic components.However,due to the lack of necessary methods,it is impossible to determine whether domestic components can fully meet the requirements of the use of weapons and equipment,so in the actual use process,the effect of domestic components replacing imported components is not very ideal.Under the trend of component localization,the demand of weapon equipment for the use of domestic components is very urgent,and it is also necessary to carry out application reliability evaluation research for domestic components of weapon equipment.In this paper,through a lot of investigation and analysis work,making full use of FMEA-based domestic components application reliability evaluation and analysis methods,combined with the characteristics of the use environment of weapons and equipment,aiming at the shortcomings of existing weapons and equipment in domestic components reliability work,innovatively proposed for domestic components based on FMEA application reliability evaluation work;through the analysis of current weapons;The present situation of the application reliability of domestic components in equipment China has been clarified,and the evaluation factors,levels and projects of the application reliability process of components have been clarified.The overall process of the application reliability evaluation of domestic components based on FMEA has been constructed.The factors such as the use environment,failure mode,parameter drift coefficient,parameter diffusion coefficient and structural parameters of domestic components in weapon equipment have been fully considered.Characteristic.On this basis,a reliability evaluation model of domestic components based on FMEA is constructed.It includes: domestic component evaluation model based onfailure severity,fuzzy comprehensive evaluation model based on fault tree and failure mode,optimization model of domestic component structure analysis evaluation function and reliability evaluation model of domestic component limit evaluation.The validity of the evaluation model is verified by case study.The research results of this paper are of great significance to find out the boundary differences and performance differences between domestic and imported components,to guide the rational use of domestic components in weapons and equipment,and to improve the utilization rate of domestic components.