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Optical measurements and measurement systems for gears and rotary axes

1 March 2023, online, 10:00 – 14:15 CET

The mechanical components, including the blades, of Wind Energy Systems (WES) are exposed to high loads and these are transmitted to the drive-train’s components. This means that the requirements on these parts are high, often resulting in tight manufacturing tolerances in relation to their size and mass. Reliable verification of manufacturing tolerances through accurate measurements is a critical part of quality assurance.

This training course is targeted at industry personnel, and it will describe the capabilities of various optical measurement systems as well as calibration strategies for rotary axes. The main focus will be on optical measurements of WES components, but the procedures may also be transferred to other industrial parts.

The course is an output of EMPIR project Metrology for enhanced reliability and efficiency of wind energy systems (19ENG07, Met4Wind).


  • Welcome, opening – VTT, Björn Hemming
  • Optical measurement of topography (CSI) – VTT, Ville Heikkinen
  • Calibration of rotary axes using a ball plate – PTB, Frank Keller
  • Development of reference freeform artefact for optical measurements – CMI, Jan Soukal
  • Break
  • Ball bar for verification of optical measurement systems – VTT, Björn Hemming
  • 3D surface measurements and analysis on gears – NCL, Tom Reavie
  • Break
  • Optical laser scanner measurements on CMMs for simulation of the gear box – Hexagon, Felix Balzer
  • Use of confocal probe for measurement of shaft – Aalto, Tuomas Tiainen
  • Discussion
  • End of training course


Contact Bjorn Hemming with the subject ‘On-line course 2023’

Full details of course

This EMPIR project is co-funded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States

Event Information

2023-03-01 to 2023-03-01
Online event
EMPIR , EMRP / EMPIR Training , Energy