Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/3818

Title: Aircraft fuel rig system fault diagnostics based on the application of digraphs
Authors: Kelly, Emma M.
Bartlett, L.M.
Keywords: System fault diagnostics
Aircraft fuel system
Issue Date: 2007
Publisher: © IMechE / Professional Engineering Publishing
Citation: KELLY, E.M. and BARTLETT, L.M., 2007. Aircraft fuel rig system fault diagnostics based on the application of digraphs. Proceedings of the Institution of Mechanical Engineers, Part O : Journal of Risk and Reliability, 221 (4), pp. 275-284 [DOI: 10.1243/1748006XJRR88]
Abstract: The issue of fault diagnostics is a dominant factor concerning current engineering systems. Information regarding possible failures is required in order to minimize disruption caused to functionality. A method proposed in this paper utilizes digraphs to model the information flow within an application system. Digraphs are composed from a set of nodes representing system process variables or component failure modes. The nodes are connected by signed edges thus illustrating the influence, be it positive or negative, one node has on another. System fault diagnostics is conducted through a procedure of back-tracing in the digraph from a known deviating variable. A computational method has been developed to conduct this process. Comparisons are made between retrieved transmitter readings and those expected while the system is in a known operating mode. Any noted deviations are assumed to indicate the presence of a failure. The current paper looks in detail at the application of the digraph diagnostic method to an industrially based test stand of an aircraft fuel system. This research includes transient system effects; the rate of change of a parameter is taken into consideration as a means of monitoring the system dynamically. The validity of the results achieved, through performing fault diagnostics based on the use of a digraph model, is evaluated. Finally, the effectiveness and scalability issues associated with the application of the method are addressed.
Description: This article was published in the journal, Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability [© IMechE] and is also available at: http://journals.pepublishing.com/content/119859
URI: https://dspace.lboro.ac.uk/2134/3818
ISSN: 1748-006X
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

Files associated with this item:

File Description SizeFormat
07_IMechO_FuelRig_EMK&LMB.pdf196.29 kBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.