Open AccessMeasurement of moment coupling in fretting fatigue experiments
Author(s) -
J.P.J. Truelove,
D.A. Hills,
Luke Blades
Publication year - 2021
Publication title -
proceedings of the institution of mechanical engineers. part c, journal of mechanical engineering science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.411
H-Index - 59
eISSN - 2041-2983
pISSN - 0954-4062
DOI - 10.1177/09544062211043143
Subject(s) - fretting , moment (physics) , materials science , enhanced data rates for gsm evolution , coupling (piping) , slip (aerodynamics) , mechanics , shear (geology) , point (geometry) , digital image correlation , structural engineering , composite material , physics , engineering , geometry , classical mechanics , mathematics , thermodynamics , telecommunications
Moment coupling in fretting fatigue experiments refers to the generation of moments when a shear force is applied, caused by the difficulty in designing fretting fatigue experiments where the shear is reacted out on the same plane as the contact. Digital Image Correlation is used to measure the effect of moment coupling, and a model is created to calculate the effect of the applied moment at any point during a loading cycle on near-edge contact properties. The effects of the changing contact pressure on the slip zone sizes are considered. Finally, the model derived is used to find a load cycle including the effect of normal contact force that creates a truly constant near-edge contact pressure distribution at one edge of the flat and rounded pad. Although the calibrations found in this paper are valid only for the specific rig and specimen geometry used in this paper, the method could be readily applied to other experiments.