A function failure analysis method for improving reliability of the product based on GO-FLOW methodology

Reliability and quality of product is not established completely in detail design process, but is brought out essentially in the course of conceptual design. Flow and operation are the two basic element of function structure network. The failures of flow and operation will transfers in function structure network. Failure analysis is an important technology in product reliability and quality¿s guarantee. Anticipatory flow failures and anticipatory operation failures are determined by analysing function structure of product. Probability of function failure, sensitivity of function failure, arithmetic mean of failure probability and standard deviation of failure probability are gained by the function failure analysis of the function structures using the GO-FLOW methodology. A function failure analysis method for improving reliability of the product in the stage of conceptual design is introduced in this paper. This method introduces reliability design to conceptual design of product, even the functional design, so reliability and quality of product can be improved effective in the top of product design.