Basic Principles of the Construction of Residual Resource Estimation Systems
The construction of the Residual Resource Estimation Systems (RRES) is classically based on following principles: Construction of physic-mathematical model of object functioning; Consideration of the initial resource by the condition at the moment of putting an object into operation; Consideration of operation conditions, including load history, and what is even more important, history of overloads; Introduction of the definitive technical parameterss et. However data obtained by classic defectoscopy is not enough to form the vector of diagnostic parameters, because defectoscopy deals with defects already developed-probably very close to destruction of the material. The application of the inspection methods giving information of the current condition of metal structure and of the dynamics of change of this condition; initiation and propagation of microdefects leading to the development of macrodefects in the process of object operation. Introduction of parameters describing material microstructure increases preciseness of the residual resource prediction. Also, so to obtain real economic effect using RRES, the model is to include parameters which setting in some acceptable range extends the residual resource. Owing to this, in practice more three important parameters are to be considered: Application of non-destructive testing methods, so that inspection procedure itself would not decrease the residual resource of the object under inspection; Introduction of parameters describing the condition of material microstructure; Resource control. Realization of first two principles is reached easily by using on-site metallography. At one hand, the given method is non-destructive, from the other hand, it gives the possibility to get quantitative estimations describing metal structure condition, and to estimate quantitatively the structure changes. It lets to detect presence and to define geometric characteristics of microdefects, and to estimate its propagation dynamics quantitatively. For realization of third principle, the mathematical model of object functioning considering controlling parameters, is introduced in the given paper.
automated systems important principles metal microstructure on-sitemetallography the mathematic model
Vladimir V. KLYUEV Mikhail V. FILINOV Andrey S. FURSOV Vladimir V. BYKOV
JSCSPECTRUM-RII, Moscow, Russia
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2335-2340
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）