Skip to main content
Chapter
Licensed
Unlicensed Requires Authentication

9 Complex system modeling method considering failure mechanism dependency

Become an author with De Gruyter Brill
Mathematics for Reliability Engineering
This chapter is in the book Mathematics for Reliability Engineering

Abstract

The physics-of-failure (PoF) method has been more and more popular in engineering to understand the failure mechanism (FM) of products. However, due to lack of system modeling method and solving algorithm, the information of FM cannot be used to evaluate system reliability. This chapter presents a system reliability evaluation method with FMT (failure mechanism tree) considering physical dependency (PDEP) such as competition, trigger, acceleration, inhibition, damage accumulation, and parameter combination. The BDD (binary decision diagram) analytical algorithm is developed to solve system reliability model. The operation rules of ite operators for generating improved BDD are discussed. The flow chart of system reliability evaluation method based on FMT and BDD is proposed, and is applied in the case of a train speed control microelectronic system. Results show that the method is effective to evaluate system reliability from the perspective of failure mechanism.

Abstract

The physics-of-failure (PoF) method has been more and more popular in engineering to understand the failure mechanism (FM) of products. However, due to lack of system modeling method and solving algorithm, the information of FM cannot be used to evaluate system reliability. This chapter presents a system reliability evaluation method with FMT (failure mechanism tree) considering physical dependency (PDEP) such as competition, trigger, acceleration, inhibition, damage accumulation, and parameter combination. The BDD (binary decision diagram) analytical algorithm is developed to solve system reliability model. The operation rules of ite operators for generating improved BDD are discussed. The flow chart of system reliability evaluation method based on FMT and BDD is proposed, and is applied in the case of a train speed control microelectronic system. Results show that the method is effective to evaluate system reliability from the perspective of failure mechanism.

Downloaded on 25.4.2026 from https://www.degruyterbrill.com/document/doi/10.1515/9783110725599-009/html?lang=en
Scroll to top button