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Where is the fault in fault trees?
Journal of Experimental Psychology: Human Perception and Performance, 1994When branches of a fault tree are pruned, their probabilities are not fully transferred to the "all other" branch. We test 3 explanations for this underestimation of the "all other" probability: availability, ambiguity, and credibility. In an experiment, we varied the credibility of a cover story and separately observed the generation of a fault's ...
J. Edward Russo, Karen J. Kolzow
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Information and Software Technology, 2002
Abstract Fault tree (FT) is a simple, visual, popular and standardized notation for representing relationships between a fault in a system and the associated events. FTs are widely used for supporting products and systems in diverse industries like process control, avionics, aerospace, nuclear power systems, etc.
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Abstract Fault tree (FT) is a simple, visual, popular and standardized notation for representing relationships between a fault in a system and the associated events. FTs are widely used for supporting products and systems in diverse industries like process control, avionics, aerospace, nuclear power systems, etc.
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2016
Fault tree analysis, as many other dependability evaluation techniques, relies on given knowledge about the system architecture and its configuration. This works sufficiently for a fixed system setup, but becomes difficult with resilient hardware and software that is supposed to be flexible in its runtime configuration.
Christine Jakobs +2 more
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Fault tree analysis, as many other dependability evaluation techniques, relies on given knowledge about the system architecture and its configuration. This works sufficiently for a fixed system setup, but becomes difficult with resilient hardware and software that is supposed to be flexible in its runtime configuration.
Christine Jakobs +2 more
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From Fault-Tree To Fault-Identification
IEEE Transactions on Reliability, 1983Summary: A practical way is given of identifying actual faults, by using a fault tree's complete system of minimal cutsets. For instance, for a fault tree where 20 cutsets are considered with 30 possible primal events, any of them can be found in at most three steps by the proposed FID-algorithm.
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Fault Trees vs. Component Fault Trees: An Empirical Study
2018When dealing with structural safety analysis, one of the most popular methodologies is Fault Tree Analysis (FTA). However, one major critique is the rapid increasing of the complexity, and therefore incomprehensibility, when dealing with realistic systems.
Tim Gonschorek +3 more
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Fuzzy Fault Tree Based Fault Detection
2012 Sixth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, 2012In this article, for the Linux operating system environment, with the characteristics of ambiguity and uncertainty for the occurrence probability of system failures, fuzzy theory is introduced into the fault tree analysis. The occurrence probability of basic events in the conventional fault tree is made fuzzy by introducing the concept of fuzzy sets ...
Yuening Kang +4 more
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2006 22nd IEEE International Conference on Software Maintenance, 2006
Analysis of software fault trees exposes hardware and software failure events that lead to unsafe system states, and provides insight on improving safety throughout each phase of the software lifecycle. Software product lines have emerged as an effort to achieve reuse, enhance quality, and reduce development costs of safetycritical systems.
D. Needham, S. Jones
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Analysis of software fault trees exposes hardware and software failure events that lead to unsafe system states, and provides insight on improving safety throughout each phase of the software lifecycle. Software product lines have emerged as an effort to achieve reuse, enhance quality, and reduce development costs of safetycritical systems.
D. Needham, S. Jones
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Extending fault trees with an AND-THEN gate
Proceedings 11th International Symposium on Software Reliability Engineering. ISSRE 2000, 2002Fault trees have been used for software safety analysis in various safety critical systems. The PRIORITY-AND gate was proposed because the conventional AND gate cannot be used to represent the sequential order of the events. The paper shows that even PRIORITY-AND gate is not expressive enough to represent the relative temporal order of the events ...
Pathirage Gamini Wijayarathna +1 more
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Testing trees for multiple faults
Proceedings of 14th VLSI Test Symposium, 2002A "well behaving" property is defined for each line (in general a bundle of wires) connecting two combinational logic cells. This property can be easily taken into account in the design process of the circuit. It is shown that all tree-structured circuits of combinational logic cells are easily testable for multiple faults if each line is "well ...
Anastasios Vergis, Carlos Tobon 0002
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On the numerical solution of fault trees
Reliability Engineering & System Safety, 2003Abstract In this paper an account will be given of the numerical solution of the logic trees directly extracted from the Recursive Operability Analysis. Particular attention will be devoted to the use of the NOT and INH logic gates for correct logical representation of Fault Trees prior to their quantitative resolution.
Micaela Demichela +3 more
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