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X-Ray Fluorescent Control of the Inhomogeneity of Used Oil Sludge of Aviation Engine

Abstract

A novel approach to the topical problem of rapid diagnostics of technical condition of in-service aircraft engines is developed. Diagnostics is based on assessing the inhomogeneity of the used oil sludge which is attributed to the existence of large metal particles in the sludge, the size and number of which increases with tearing of rubbing surfaces of aircraft engines. The degree of the inhomogeneity of the sludge is determined by X-Ray fluorescence method. The intensity of x-ray fluorescence of the sludge provided determination (using single-factor analysis of variance) of the substantial effect of the inhomogeneity factor of the analyzed sludge. The limit value of the inhomogeneity factor is determined on the array of measured intensities of sludges of used oils of the engines in good condition, thus sorting out the engines with high inhomogeneity factor, i.e., a high content of large particles in used oil sludges. The elemental composition of large particles enables us to specify the degree of tearing of individual parts of the aviation engine under study.

About the Authors

G. V. Pavlinsky

Russian Federation


L. I. Vladimirova

Russian Federation


V. G. Drokov

Russian Federation


T. D. Stepuk
НИИ прикладной физики Иркутского государственного университета
Russian Federation


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Review

For citations:


Pavlinsky G.V., Vladimirova L.I., Drokov V.G., Stepuk T.D. X-Ray Fluorescent Control of the Inhomogeneity of Used Oil Sludge of Aviation Engine. Industrial laboratory. Diagnostics of materials. 2016;82(2):40-42. (In Russ.)

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ISSN 1028-6861 (Print)
ISSN 2588-0187 (Online)