12 - 14 May, 2020 | Hotel Hafen Hamburg, 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
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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
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Prof. Dr. Michel Fillon

Director of Research
Centre 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
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Dr. Esteban Daniel Broitman

Senior Scientist
SKF Research & Technology

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
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Hansjürg Stiele

WIW
Albstadt-Sigmaringen, University of Engineering

11:10 am - 11:40 am Remanufacturing: reducing costs by refurbishing old bearings

Philipp Schmid - Wind Expert, SKF AG
• When a bearings approaches the end of its service life, replacement seems logical
• Instead, remanufacturing bearings is quicker than the lead time on key component, reducing potential periods of downtime
• Bearing are taken apart and assessed to determine their condition based on standards set by the manufacturer
• Repairing of the bearing to the original condition
• Reliability to zero room for error (aviation)
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Philipp Schmid

Wind Expert
SKF AG

Roundtable A | Future modelling approaches in tribology

Roundtable B | Can coatings extend bearing lifetime?

Roundtable C | Installation concept RETROFIT

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Dieter Fauconnier

Professor
Ghent University, Soete Laboratory - Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS)

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Dr. Esteban Daniel Broitman

Senior Scientist
SKF Research & Technology

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Lorenz Meesenburg

CTO
P.E. Concepts GmbH

12:10 pm - 1:40 pm Networking luncheon

• Premature RCF (WEC)
• Main shaft bearing lubrication and wear problems
• Methods for early detection of emerging damages
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Prof. Gerhard Poll

Head of Mechanical Engineering
Leibniz University Hannover

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
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Dieter Fauconnier

Professor
Ghent 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
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Benedikt Neugebauer

Application and System Engineering
Schaeffler

3:10 pm - 3:30 pm Chairperson’s closing remarks

Matthias Stammler - Senior Engineer, Fraunhofer IWES
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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
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Prof. Gerhard Poll

Head of Mechanical Engineering
Leibniz University Hannover