On the Role of Contact and System Stiffness in the Measurement of Principal Variables in Fretting Wear Testing Articles uri icon

publication date

  • August 2020

start page

  • 4152

issue

  • 15

volume

  • 20

International Standard Serial Number (ISSN)

  • 1424-8220

abstract

  • In this work, the role of the contact stiffness in the measurement of principal variables in fretting wear tests is assessed. Several fretting wear tribometers found in the literature, including one developed by the authors, are analysed and modelled using numerical methods. The results show the importance of the tribosystem stiffness and tangential contact stiffness in the displacement sensor calibration and in the correct numerical modelling of fretting wear tests, especially for flat-to-flat contact configuration. The study highlights that, in most cases, direct comparisons between fretting results with severe wear obtained with different tribometers cannot be performed if the contact stiffness is not properly considered during the development of the experiments.

keywords

  • fretting wear; numerical modelling; tangential contact stiffness