Effect of Rod Shape on Effective Dynamic Coefficient of Friction between Rotating Rod and Copper Plate

Measurement of Temperature Field by Infrared Thermometer and Evaluation of Effective Dynamic Coefficient of Friction

Abstract

In the present study, unsteady-state friction heating experiments and corresponding numerical analysis have been conducted for the purpose of evaluating the effective dynamic coefficient of friction μ between a rotating rod and a copper plate, which is regarded as one of essential key parameters for elucidating heat transfer process in friction welding, friction stir welding, spot friction welding, surface modification, and so on. It has been shown that, the effective dynamic coefficient of friction μ of copper plate is evaluated from about 0.30 to 0.35 to first approximation, and almost no effects of the tip radius of rotating rod on μ has been observed under the present experimental conditions.