INVESTIGATION OF NOISE CHARACTERIZATION OF COATED ROTORS

Ali̇ Öz and Abdullah Demi̇r
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Ali̇ Öz: Department of Motor Vehicles and Transportation Technologies, TBMYO, Mehmet Akif Ersoy University, Burdur, Turkey2Department of Automotive, Faculty of Technology, Marmara University, Goztepe Campus, Istanbul
Abdullah Demi̇r: Department of Motor Vehicles and Transportation Technologies, TBMYO, Mehmet Akif Ersoy University, Burdur, Turkey2Department of Automotive, Faculty of Technology, Marmara University, Goztepe Campus, Istanbul

Surface Review and Letters (SRL), 2021, vol. 28, issue 01, 1-15

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 (R1, R2, R3 and R4) compared with OEM brake rotor (R0) in terms of friction coefficient (μ) 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 R0 rotor provided higher brake noise and higher μ compared with coated rotors. In hot judder I testing procedures, R4 rotor provided higher μ and higher brake noise compared with the other coated rotors and R0. Also, in hot judder II testing procedures, R2 rotor provided higher μ compared with the other rotors, R0 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.

Keywords: Brake noise; braking parameters; friction coefficient; coated rotor; multiple regression method (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X20500353

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