| Courtyard Hamburg City, Hamburg, Germany
Conference day II, Wednesday, 13 May 2020
8:30 am - 9:00 am
Registration and welcome coffee
9:00 am - 9:10 am
Chairperson’s opening
Matthias Stammler -
Senior Engineer,
Fraunhofer IWES
9:10 am - 9:40 am
Heavily loaded hydrodynamic journal bearings: Can we improve their performance by using coatings with wall slip conditions?
Prof. Dr. Michel Fillon -
Director of Research,
Centre National de la Recherche Scientifique (CNRS), Pprime Institute Mechanical Materials and Engineering, Poitiers University
• Analysis of wall slip conditions on plain journal bearing behavior
• Influence of the shape of the wall slip zone on load carrying capacity and friction coefficient
• Influence of eccentricity (i.e. operating conditions) on bearing performance, for a given optimized configuration
Prof. Dr. Michel Fillon
Director of ResearchCentre National de la Recherche Scientifique (CNRS), Pprime Institute Mechanical Materials and Engineering, Poitiers University
9:40 am - 10:10 am
How to extend the bearing lifetime by the use of coatings
Dr. Esteban Daniel Broitman -
Senior Scientist,
SKF Research & Technology
• Typical problems observed on wind turbine bearings
• Using coatings as a surface engineering process to extend maintenance and life expectancy of specialized bearings.
• Black Oxide conversion coatings and carbon-based PVD coatings: production process and main mechanical and tribological properties.
• Diamond-like carbon (DLC) vs. NoWear® carbon-based nanostructured coatings
• Aluminum oxide coatings to overcome the damaging effects of stray electric currents
• Application examples
10:10 am - 10:40 am
Refreshment break and networking
10:40 am - 11:10 am
Induction hardening of bearing raceways
Hansjürg Stiele -
WIW,
Albstadt-Sigmaringen, University of Engineering
• Induction through-hardening and induction tempering for bearing rings
• Classical hardening processes for smaller bearings (wind industry)
• The future of bearing steels will be defined by the search for an “ideal” material which will combine improvements in surface
11:10 am - 11:40 am
Circular economy – remanufacturing in the wind sector
Roland Muttenthaler -
Manager Spare Part Management and Remanufacturing Wind O&M,
SKF Österreich AG
- Resources on earth are limited, the circular economy approach does not stop – it can be applied to almost any industry
- When a bearing approaches the end of its service life, replacement seems logical – they are treated as single-use components
- But critical components - like bearings – can get a second life which can shorten cost & lead times therefore reducing potential periods of downtime
- Most bearings can be remanufactured more than once. In other words, remanufacturing doesn’t just make economic sense. It makes environmental sense, too.
Roland Muttenthaler
Manager Spare Part Management and Remanufacturing Wind O&MSKF Österreich AG
11:40 am - 12:10 pm
Interactive Roundtables: Future modelling approaches in tribology - Can coatings extend bearing lifetime? - Installation concept RETROFIT
Dieter Fauconnier -
Professor,
Ghent University, Soete Laboratory - Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS)
Dr. Esteban Daniel Broitman - Senior Scientist, SKF Research & Technology
Lorenz Meesenburg - CTO, P.E. Concepts GmbH
Roundtable A | Future modelling approaches in tribology
Roundtable B | Can coatings extend bearing lifetime?
Roundtable C | Installation concept RETROFIT
Dieter Fauconnier
ProfessorGhent University, Soete Laboratory - Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS)
12:10 pm - 1:40 pm
Networking luncheon
1:40 pm - 2:10 pm
Possible root cause failures
Prof. Gerhard Poll -
Head of Mechanical Engineering,
Leibniz University Hannover
• Premature RCF (WEC)
• Main shaft bearing lubrication and wear problems
• Methods for early detection of emerging damages
2:10 pm - 2:40 pm
Reliability and condition monitoring of drivetrain components: a tribological perspective
Dieter Fauconnier -
Professor,
Ghent University, Soete Laboratory - Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS)
• Bearing and gear failure modes in drivetrains
• Condition Monitoring of gears through Digital Image Processing
• Future techniques for modelling and monitoring lubricated Tribo-contacts
Dieter Fauconnier
ProfessorGhent University, Soete Laboratory - Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS)
2:40 pm - 3:10 pm
Increasing system reliability by sensorization
Benedikt Neugebauer -
Application and System Engineering,
Schaeffler
• Sensor technology: Check for any irregularities in operational performance
• Predict potential failures before they happen
• Match real time data against historical data to determine which parts need adjustments or replacements
• Significantly reducing downtime
3:10 pm - 3:30 pm
Chairperson’s closing remarks
Matthias Stammler -
Senior Engineer,
Fraunhofer IWES
3:20 pm - 3:20 pm
End of conference day two
4:00 pm - 6:00 pm
Root cause failures of wind turbine bearings in drivetrains
Prof. Gerhard Poll -
Head of Mechanical Engineering,
Leibniz University Hannover
WT gearbox and generator failure rates are unacceptably high, particularly given the long downtime incurred per failure. There is evidence that bearing failures of the gearbox highspeed stage (HSS) and generator account for a significant proportion of these failures. What are the root causes of these failure data and how can a valuable ‘top down’ reliability analyses be of help?
• Identify potential causes
• Review existing documentation & machine data review
• Inspection and measurements
• Lubrication analysis
• Corrective action recommendations
• Root cause findings documentation
