Authors:
L. Bennett Royal Military College of Canada Department of Chemistry and Chemical Engineering K7K 5L0 Kingston Ontario Canada

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S. Swanson Royal Military College of Canada Department of Chemistry and Chemical Engineering K7K 5L0 Kingston Ontario Canada

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J. Poland Queen's University Department of Chemistry K7L 3N6 Kingston Ontario Canada

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R. Alexander Queen's University Department of Chemistry K7L 3N6 Kingston Ontario Canada

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Abstract  

Aircraft engines and transmissions are regularly monitored by several integrated techniques such as periodic analysis of the metallic wear debris deposited in the lubricating oil, termed Aircraft Oil Analysis (AOA). Trending of these results indicate to the fleet manager the operational health of each aircraft. Instrumental neutron activation analysis (INAA) provides similar results and for a greater range of metals than the analytical techniques used in the field laboratories. However, for new oil-lubricated systems with fine filtration, the wear debris collects on the oil filter and little debris remains in the oil for analysis. The wear debris must be removed from the filter and ends up as a solid sample. Ultrasonic cleaning is used and the wear debris may be inspected qualitatively to determine the wear mechanism, termed Filter Debris Analysis (FDA). Quantitative analysis follows, termed Quantitative Filter Debris Analysis (QFDA) and, for techniques other than INAA, the sample must be dissolved. A combination of three acids and microwave digestion are then used. Then, to use the present field technique, this aqueous sample is then converted to an appropriate organic matrix before analysis. Again, INAA has been used to develop and monitor this QFDA technique for field application.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)