An Improved Failure Mode and Effect Analysis Method Based on Trust Relationship Exploration

The failure mode and effect analysis (FMEA) method as an effective reliability management tool has gained broad applications in the realm of product, system, and service. Currently, it is widespread to bring the trust relationship (TR) in risk assessment, which enhances the FMEA quality and has challenging problems, such as the construction of indirect relationships, the expert's weight determination, and the risk assessment interaction in the trust network. According to these points, we propose an improved FMEA method, where an indirect TR construction mechanism, a hybrid expert's weight determining method, and a risk assessment evolution model under the trust network are designed. The proposed FMEA method better integrates the TR with the FMEA. In addition, to fit experts' different expression habits, different information forms are used in this study to enhance the flexibility of risk assessment. To substantiate the superiority and rationality of the proposed method in this study, a case study and further discussion are presented.