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Evaluation of AL 2 O 3 , Graphite and Sulphide Effects on MU Behavior in Different Humidity Environments Through Combined Mixture-Environmental DOE
Technical Paper
2011-01-2349
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The friction performance of a Disc Brake Pad is even more required to present stable mu behavior in various environmental conditions such as different temperature and humidity. Interaction between compositional variables (raw materials) and environmental conditions cannot be revealed by a simplistic approach without taking into account their mutual interactions. Thereby is necessary a "crossed" design able to combine mixture components with environmental factors. This paper reports the mu behavior of a commercial Brake Pad Formulation in two different environmental conditions (winter condition, e.g., low humidity, and summer condition, e.g., high humidity) through a Combined Design of Experiment. The design was defined by the variation of three mixture components (Al₂O₃, Graphite and Sulfides) of the Brake Pad Formula according to a Response Surface Method (RSM). The μ behavior has been evaluated on a full-scale dynamometric bench test (AK-Master) with climatic control. The DoE output reports the effect of 7 different compositions at 2 levels of humidity and temperature on the friction performance at different speed, pressure and temperature conditions. Moreover a Physical and Chemical characterization of the 7 different composition brake pads has also been reported.
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Authors
Citation
Merlo, F., Passarelli, U., and Buonfico, P., "Evaluation of AL2O3, Graphite and Sulphide Effects on MU Behavior in Different Humidity Environments Through Combined Mixture-Environmental DOE," SAE Technical Paper 2011-01-2349, 2011, https://doi.org/10.4271/2011-01-2349.Also In
References
- Odani, N. Kobayashi, M. Kakihara, K. “Effects of Transferred Surface Film on μ Behavior of Disc Brake Pad in Humidity,” SAE Technical Paper 1999-01-3391 1999 10.4271/1999-01-3391
- Matozo, L. T. Soares, M. R. F. Al-Qureschi, H. A. “The Effect of Environmental Humidity and Temperature on Friction Level and Squeal Noise Propensity for Disc Brake Friction Material,” SAE Technical Paper 2008-01-2534 2008 10.4271/2008-01-2534
- Brendlé, Stempflé, 2003 ‘Triboreaction of graphite with moisture - a New Model of triboreactor for integrating Friction and Wear’ Wear 254 818 826
- Lancaster, J.K. 1990 ‘A review of the influence of environmental humidity and water on friction, lubrication and wear’ Tribology International 23 6 371 389
- Montgomery, Douglas C. 2005 Design and Analysis of Experiments 6 th John Wiley and Sons
- Cornell, John A. 2002 Experiments with Mixtures 3 rd John Wiley and Sons