Physics-of-failure-based prognostics and health management for electronic products

A PHM (prognostics and health management) scheme for electronic product is proposed on the basis of physics-of-failure. This method can help online reliability evaluation under real environmental condition by the identification of potential failure mechanism and failure position for devices, products and systems, so as to establish the foundation of reliability assessment for new material, new structure and new product. Under the analysis of failure mechanism for electronic product, the FMMEA (Failure Modes, Mechanisms and Effects Analysis) is used to get the failure mode, mechanism and failure physics model for the potential fault site. Based on the simulation model derived from the parameters of product material, structure, processing technology and the analysis of stress, the life distribution for the potential fault can be got through damage analysis with physics-of-failure model. The PHM information derived can be used to maintain, prognostic and decision-making for electronic product to reduce the life cycle cost and enhance the availability.