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Vulnerabilities, Influences and Interaction Paths: Failure Data for Integrated System Risk AnalysisWe describe graph-based analysis methods for identifying and analyzing cross-subsystem interaction risks from subsystem connectivity information. By discovering external and remote influences that would be otherwise unexpected, these methods can support better communication among subsystem designers at points of potential conflict and to support design of more dependable and diagnosable systems. These methods identify hazard causes that can impact vulnerable functions or entities if propagated across interaction paths from the hazard source to the vulnerable target. The analysis can also assess combined impacts of And-Or trees of disabling influences. The analysis can use ratings of hazards and vulnerabilities to calculate cumulative measures of the severity and importance. Identification of cross-subsystem hazard-vulnerability pairs and propagation paths across subsystems will increase coverage of hazard and risk analysis and can indicate risk control and protection strategies.
Document ID
20080029276
Document Type
Conference Paper
Authors
Malin, Jane T. (NASA Johnson Space Center Houston, TX, United States)
Fleming, Land (MEI Technologies, Inc. Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2006
Subject Category
Computer Systems
Report/Patent Number
IEEEAC Paper 1450 Version 2
Meeting Information
2006 IEEE Aerospace Conference(Big Sky, MT)
Distribution Limits
Public
Copyright
Other