Corrosion sensor development for condition-based maintenance of aircraft

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DOIResolve DOI: http://doi.org/10.1155/2012/684024
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TypeArticle
Journal titleInternational Journal of Aerospace Engineering
ISSN1687-5966
Article number684024
AbstractAircraft routinely operate in atmospheric environments that, over time, will impact their structural integrity. Material protection and selection schemes notwithstanding, recurrent exposure to chlorides, pollution, temperature gradients, and moisture provide the necessary electrochemical conditions for the development and profusion of corrosion in aircraft structures. For aircraft operators, this becomes an important safety matter as corrosion found in a given aircraft must be assumed to be present in all of that type of aircraft. This safety protocol and its associated unscheduled maintenance requirement drive up the operational costs of the fleet and limit the availability of the aircraft. Hence, there is an opportunity at present for developing novel sensing technologies and schemes to aid in shifting time-based maintenance schedules towards condition-based maintenance procedures. In this work, part of the ongoing development of a multiparameter integrated corrosion sensor is presented. It consists of carbon nanotube/polyaniline polymer sensors and commercial-off-the-shelf sensors. It is being developed primarily for monitoring environmental and material factors for the purpose of providing a means to more accurately assess the structural integrity of aerospace aluminium alloys through fusion of multiparameter sensor data. Preliminary experimental test results are presented for chloride ion concentration, hydrogen gas evolution, humidity variations, and material degradation. Copyright © 2012 Gino Rinaldi et al.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21269164
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Record identifiere322bfb3-32ed-4507-a481-c4a1791f59e8
Record created2013-12-12
Record modified2016-05-09
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