Project description DEENESFRITPL Laser-based surface treatment for crowned splines Crowned splines in ultra-high bypass ratio-type applications can obtain exceptional surface qualities by combining laser and physical vapour deposition processes. The EU-funded CROSSONT project will deliver laser-based surface treatment methods for crowned splines able to reduce the risk of wear and restrict the friction in the spline connections between shaft and gear. The project will use a combination of coatings and laser local hardening. It will also consider laser-textured gear steel surfaces, production of which is still an innovative method. CROSSONT will use a statistical test plan to identify the most efficient methods and examine their combination. The methods will be assessed in a new back-to-back test rig suitable for crowned splines. Show the project objective Hide the project objective Objective The main goal of the project CROSSONT is to provide surface treatment methods for crowned splines which are able to fulfil the requirement of reducing the risk of wear and minimizing the friction in the spline connections between shaft and gear. It is the consortium's firm conviction that outstanding surface properties for crowned splines in UHBR applications can be generated with a combination of laser and physical-vapour-deposition (PVD) processes. Modelling of the crowned spline will be conducted to predict its behaviour. In combination with the coatings, laser local hardening is to be used, and, on the other hand, laser textured gear steel surfaces are to be considered. The latter are becoming more and more important due to their tribological properties. It is mandatory that the results of the project are low in maintenance, highly reliable and allow long life time. The proposed laser based surface treatments technologies are laser local hardening, laser microstructuring and laser nanostructuring. Additionally, multi-layered coatings will be investigated in terms of PVD and in specific by reactive magnetron sputtering. These systems may be doped with silver in order to control heat balance or to introduce a wear indicator as a smart coating. The most effective methods will be identified by using a statistical test plan, which will also investigate the combination of such methods. While PVD is able to realise thin hard coatings to protect the surface from wear, the named laser processes can either reduce wear (e.g. laser hardening) and/or reduce the coefficient of friction (e.g. micro-/nanotextures). In general, laser local hardening can be considered as an almost established process, while laser texturing is still an innovative approach to further improve the surface properties of crowned splines. The most promising methods will be applied to full scale splines and evaluated in dynamic fatigue testing. The findings are summarized in a technical recommendation. Fields of science natural scienceschemical sciencesinorganic chemistrytransition metalsengineering and technologymaterials engineeringcoating and filmsnatural sciencesphysical sciencesopticslaser physics Programme(s) H2020-EU.3.4. - SOCIETAL CHALLENGES - Smart, Green And Integrated Transport Main Programme H2020-EU.3.4.5.5. - ITD Engines Topic(s) JTI-CS2-2017-CfP07-ENG-01-24 - Crowned spline surface treatment and modelling Call for proposal H2020-CS2-CFP07-2017-02 See other projects for this call Funding Scheme RIA - Research and Innovation action Coordinator RHEINISCH-WESTFAELISCHE TECHNISCHE HOCHSCHULE AACHEN Net EU contribution € 211 500,00 Address Templergraben 55 52062 Aachen Germany See on map Region Nordrhein-Westfalen Köln Städteregion Aachen Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 211 500,00 Participants (2) Sort alphabetically Sort by Net EU contribution Expand all Collapse all LEIBNIZ-INSTITUT FUR WERKSTOFFORIENTIERTE TECHNOLOGIEN-IWT Germany Net EU contribution € 151 118,75 Address Badgasteiner strasse 3 28359 Bremen See on map Region Bremen Bremen Bremen, Kreisfreie Stadt Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 151 118,75 BIAS - BREMER INSTITUT FUR ANGEWANDTE STRAHLTECHNIK GMBH Germany Net EU contribution € 134 925,00 Address Klagenfurter strasse 5 28359 Bremen See on map Region Bremen Bremen Bremen, Kreisfreie Stadt Activity type Other Links Contact the organisation Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 134 925,00