Physics of failure (PoF)-based reliability and performance integrating modeling method and software for electromechanical product

Electromechanical product's reliability is affected by uncertainty as well as performance degeneration during its life cycle. The present reliability and performance integrating modeling methods have obvious deficiencies in long period reliability analysis and assessment when applied to such system. A novel integrating modeling method based on physics of failure (PoF) and a simulation algorithm that considers uncertainty and degeneration are proposed in this paper to compute maintenance free operation period or maintenance free operation period survivability which is used to assess long period reliability of system. Furthermore, the concept design of this kind of software based on the above theory is also introduced. A case study of servo valve demonstrates the feasibility of the method and usability of the software in this research.