可靠性目标值的检验时机研究

Research on Inspecting Opportunity for Reliability Goals

与设计定型时检验装备可靠性最低可接受值相比,生产定型时是否应检验可靠性目标值也值得关注。本文在产品可靠性增长规律的基础上,引入GJB1909A中对目标值、门限值等的定义,对GJB1362A等资料中提及的生产定型进行了阐述,指出生产定型主要考核质量稳定性和成套、批量生产条件,从而为是否批量生产做出决策,在此基础上对目标值的检验时机进行详细论述。最后得出,生产定型时产品尚未到成熟期,不能在该阶段检验可靠性目标值,需等到装备使用一段时间,待装备设计、工艺缺陷得以充分暴露并得到改进,装备质量已稳定时,方可进行目标值检验。

Compared with the reliability minimum acceptable values inspected on the design finalization phase,the concern is that,whether the goals should be inspected on the manufacture finalization phase or not?This paper introduces the definition for reliability goals,thresholds and so on in GJB 1909A on the basis of the growth rule of product reliability during the life cycle,and explains manufacture finalization mentioned in some documents such as GJB 1362A.It points that the manufacture finalization’s objective is to examine quality stability and conditions for complete set and batch production to make the decision whether produce by batch or not.On this basis,it discusses the inspecting opportunity for reliability goals in detail.Finally,the conclusions are given,that reliability goals can’t be inspected on the manufacture finalization phase,for the products aren’t still mature on this phase.When the products have been serviced for a period,the equipment design defects and process defects are fully exposed and improved,and the products’quality is stable,then the goals can be inspected.