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Experimental Study on the Wear-in Behaviour of Brush Seals

Hildebrandt, Manuel; Schwitzke, Corina; Bauer, Hans-Jörg

Abstract (englisch):

Although some investigations on the wear behaviour of brush seals can be found in the literature, not all aspects are yet understood during the wear-in process of the seal in operation. However, it is important to understand all aspects in order to en- sure a long service life of the seal. The present paper gives an overview of the procedure, the results and the knowledge gained through the long-term rub tests carried out with a tungsten car- bide coated rotor with the aim of determining the time required to wear the seal in (”time-on-condition”). The total test duration of the cyclic tests was approx. 100 h. The measurements have shown that on the basis of the applied test procedure the initial wear-in phase is completed after approx. 40 cumulated operat- ing hours and only very little wear occurs afterwards. Further- more, it could be shown that the major part of the wear occurred within a short period of time within these 40 h and that the prop- erties of the test cycle have a great influence on the wear-in time. The coupling of the rubbing intensity with time is achieved by measuring the transient rotor temperatures during rubbing. ... mehr

DOI: 10.1115/GT2020-14158
Zitationen: 1
Zitationen: 1
Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 11.01.2021
Sprache Englisch
Identifikator ISBN: 978-0-7918-8418-8
KITopen-ID: 1000127726
Erschienen in Proceedings of the ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition - 2020 : presented at the ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, September 21-25, 2020, online. Volume 7C: Heat Transfer
Veranstaltung ASME Turbo Expo: Turbomachinery Technical Conference and Exposition (GT 2020), Online, 21.09.2020 – 25.09.2020
Verlag The American Society of Mechanical Engineers (ASME)
Seiten GT2020-14158
Bemerkung zur Veröffentlichung ASME Paper Number: GT2020-14158
Schlagwörter Brush Seals, Rubbing behavior, secondary air system, aircraft engine
Nachgewiesen in Dimensions
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