2018/02/08 by Sohag Kabir, Martin Walker, Yiannis Papadopoulos · 1 citation
Computer Science · Decision Sciences · Engineering · #Risk and Safety Analysis #Safety Systems Engineering in Autonomy #Software Reliability and Analysis Research
paper · pdf · doi:10.1016/j.ssci.2018.02.001
openalex publication_date 2018/02/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Dynamic systems exhibit time-dependent behaviours and complex functional dependencies amongst their components. Therefore, to capture the full system failure behaviour, it is not enough to simply determine the consequences of different combinations of failure events: it is also necessary to understand the order in which they fail. Pandora temporal fault trees (TFTs) increase the expressive power of fault trees and allow modelling of sequence-dependent failure behaviour of systems. However, like classical fault tree analysis, TFT analysis requires a lot of manual effort, which makes it time consuming and expensive. This in turn makes it less viable for use in modern, iterated system design processes, which requires a quicker turnaround and consistency across evolutions. In this paper, we propose for a model-based analysis of temporal fault trees via HiP-HOPS, which is a state-of-the-art model-based dependability analysis method supported by tools that largely automate analysis and optimisation of systems. The proposal extends HiP-HOPS with Pandora, Petri Nets and Bayesian Networks and results to dynamic dependability analysis that is more readily integrated into modern design processes. The effectiveness is demonstrated via application to an aircraft fuel distribution system.