TY - GEN
T1 - Effects of water in wind turbine oils on the gear load capacity
AU - Tobie, Thomas
AU - Stahl, Karsten
AU - Höhn, Bernd Robert
AU - Witzig, Jochen
PY - 2012
Y1 - 2012
N2 - Besides mineral-based gear oils, an increasing number of synthetic gear oils, e.g., polyalphaolefins, are found in wind turbine gear boxes. Water may condensate in the gear housing and can contaminate the lubricating oil. This may alter the lubricant performance and reduce the lifetime of the components. Gear running tests show different effects of water contaminated lubricants on different types of gear damages. Lubricant related gear failures that are typical for critical lubricating conditions showed no reduction of the gear load capacity. In contrast, test runs at higher lubricating film thickness showed a negative influence on the pitting load carrying capacity. There might be an increased risk of early pitting damages due hydrogen-induced stress corrosion cracking when unsolved water is available. This correlated with documented formation of pitting damages in tests with and without water contamination. This is an abstract of a paper presented at the 2012 STLE Annual Meeting and Exhibition (St Louis, MO 5/6-10/2012).
AB - Besides mineral-based gear oils, an increasing number of synthetic gear oils, e.g., polyalphaolefins, are found in wind turbine gear boxes. Water may condensate in the gear housing and can contaminate the lubricating oil. This may alter the lubricant performance and reduce the lifetime of the components. Gear running tests show different effects of water contaminated lubricants on different types of gear damages. Lubricant related gear failures that are typical for critical lubricating conditions showed no reduction of the gear load capacity. In contrast, test runs at higher lubricating film thickness showed a negative influence on the pitting load carrying capacity. There might be an increased risk of early pitting damages due hydrogen-induced stress corrosion cracking when unsolved water is available. This correlated with documented formation of pitting damages in tests with and without water contamination. This is an abstract of a paper presented at the 2012 STLE Annual Meeting and Exhibition (St Louis, MO 5/6-10/2012).
KW - Contacts: Contact mechanics
KW - Gears: Gears (general)
KW - Maintenance: Water contamination
UR - https://www.scopus.com/pages/publications/84884996602
M3 - Conference contribution
AN - SCOPUS:84884996602
SN - 9781622762484
T3 - Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012
SP - 459
EP - 461
BT - Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012
T2 - Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012
Y2 - 6 May 2012 through 10 May 2012
ER -