Fatigue and wear resistance

Thursday, October 19, 2023 - University of Lille 1 campus, Villeneuve d'ascq

The Technical Day held on October 19 at the University of Villeneuve d'Ascq on the theme of "Fatigue resistance and wear" was attended by over 30 people.

After a general presentation on fatigue, Mr. Nogning, from Institut de Soudure GROUPE, focused on the precautions to be taken when designing and building structures with welded joints. Mr. Barrazutti, from INS, explained the basics of tribology and the various techniques for characterizing friction in parts in contact. Mr Dupont from Schaeffler presented the various theories associated with surface fatigue. Indeed, this damage mode is of great importance in bearings, and conditions their service life. Numerical modeling to take account of fatigue phenomena in Vallourec's connecting tubes was presented by M. Caruso. The use of indentation testing and/or X-ray diffraction to determine the fatigue limit of pressure tubes was presented by Ms. Roudet from the University of Lille. Mr. Ghiglione from CETIM presented a study on tribological compatability between different types of lubricants and treatments: thermal, thermochemical and vacuum deposition. In anticipation of the end of the derogatory use of Chromium VI under REACH, Ms Tebby and Mr Verger from FRAMATOME demonstrated the difficulty of replacing Chromium VI-coated parts with other types of coating, since wear resistance is greatly affected.