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Condition monitoring of tribosystems by wear debris analysis

Myshkin N. K., Grigoriev A. Ya., Markova L. V.

International Journal of Applied Mechanics and Engineering

2002

Vol. 7, no 3

923--947

Wear as a surface loss of material resulting from friction is considered in connection with various factors affecting a tribosystem. It is shown that debris formed at friction can be a source of valuable information on the wear mechanism and mode. The shape, texture and color of particles can be used for wear analysis. Methods of image recognition are used in order to solve the problem of debris analysis and classification for further use as a database being a part of integrated monitoring service. The concept of wear monitoring and its main purposes are considered in the context of providing non-failure, long-term operation at optimum friction performance of a tribosystem. Wear monitoring tools based on the analysis of debris accumulation in lubricated machinery are reviewed.

Digital images of contact parameters and wear study in tribosystems

Myshkin N. K., Markova L. V., Konchits V. V.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

161-166

A technique of easy-to-interpret presentation of physical parameters (friction coefficient and electrical contact resistance) recorded in the course of friction tests is proposed. The technique is based on construction of digital "triboscopic images" as 3D map. The map includes space and time (or number of cycles) coordinates; the third coordinate is brightness ("grey level ") reflecting the value of a given parameter. The map gives evident information on surface wear uniformity, transfer process, wear particles formation and their displacement in the contact zone, scratch formation, etc. Examples of best data presentation and interpretation of results are presented. The triboscopic images are shown to be an important quantitative tool in microtribology.