Abstract
In this study, four excessive worn brake rotors of a light commercial vehicle are coated using different thickness, methods and powder coatings. Coated rotors ([Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]) compared with OEM brake rotor ([Formula: see text]0) in terms of friction coefficient ([Formula: see text]) and braking noise. Three braking test procedures (bedding, hot judder I and II) are applied to five rotors using inertia brake dynamometer. Results in bedding testing procedures showed that [Formula: see text] rotor provided higher brake noise and higher [Formula: see text] compared with coated rotors. In hot judder I testing procedures, [Formula: see text] rotor provided higher [Formula: see text] and higher brake noise compared with the other coated rotors and [Formula: see text]. Also, in hot judder II testing procedures, [Formula: see text] rotor provided higher [Formula: see text] compared with the other rotors, [Formula: see text] provided higher brake noise compared with the other coated rotors. In addition, based on experimental data, noise levels are estimated by multiple regression method with dummy variables.
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