Definition of a Suitable Parameter for Characterizing Creep-Groan Propensity in Brake Pads 2015-36-0004
The present paper addresses an investigation about the definition of a parameter for quantifying the creep-groan propensity in brake pads. Creep-groan is a self-excited vibration caused by stick-slip phenomenon [1, 2, 3]. For the definition of the creep-groan propensity parameter, extensive experimental work was performed on a laboratory-scale tribometer. The experiments are divided in two main parts: (i) study of correlation between accelerometer signal with physical and operating parameters. (ii) validation of the chosen parameter, which was based on stick-slip tests performed with three different materials, one low-metallic (low-met) and two non-asbestos organic (NAO 1 and 2). From the first study, it was found that both the slip power and mean torque multiplied by torque variation showed a slightly higher correlation with the acceleration signal. However, results from the second study (validation) revealed that slip power is the most suitable parameter to quantify the creep-groan propensity. In the end, based on the slip power parameter, a ranking among the selected materials is established. The ranking in descending order of creep-groan propensity was: low-met > NAO 1 > NAO 2.
Citation: Neis, P., Ferreira, N., Matoso, L., Masotti, D. et al., "Definition of a Suitable Parameter for Characterizing Creep-Groan Propensity in Brake Pads," SAE Technical Paper 2015-36-0004, 2015, https://doi.org/10.4271/2015-36-0004. Download Citation
Author(s):
Patric Daniel Neis, Ney Francisco Ferreira, Luciano Tedesco Matoso, Diego Masotti, Jean Carlos Poletto
Affiliated:
Universidade Federal do Rio Grande do Sul, Fras-le S.A.
Pages: 8
Event:
12th SAE Brasil International Brake Colloquium & Engineering Display
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Brake pads
Terminology
Slip
Vehicle acceleration
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