Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
F. Patocka, M. Schlögl, M. Schneider, C. Schneidhofer, N. Dörr, U. Schmid:
"MEMS Sensor for Monitoring the Degradation of Lubricating Oils";
Vortrag: 7th European Conference on Tribology (Ecotrib 2019),
Wien;
12.06.2019
- 14.06.2019; in: "7th European Conference on Tribology (Ecotrib 2019) - Book of Abstracts",
(2019),
ISBN: 978-3-901657-60-3;
S. 138
- 139.
Kurzfassung englisch:
The degradation of lubricating oil is a continuous process which, if left unmonitored, can ultimately lead to fatal damage of the lubricated machinery. During the lifetime of a lubricating oil, different types of particles are generated. The most prominent are hard wear particles and insoluble varnish precursors. The latter will form deposits on all parts ofthe machinery, thus leading to unwanted and unpredictable effects, such as a decreased heat transfer, sticking of valves or plugging of oil filters [!].
In this study, we present a novel sensor system, which enables the real-time monitoring of degradation oflubricating oil by detecting the formation of both, wear particles and varnish precursors. The sensor is based on a mechanically oscillating micro electromechanical system (MEMS) cantilever, which selectively accumulates the particles on the sensor surface. The added mass of these particles changes the oscillation properties of the resonating sensor, which serve as output signals.