Fade and wear characteristics of a glass-fiber-reinforced phenolic friction material

Gopal, P.; Dharani, Lokeswarappa R.; Blum, Frank D.

doi:10.1016/0043-1648(94)90093-0

Cited by 105 publications

(57 citation statements)

References 13 publications

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“…The difference between the highest and the lowest value of the mean coefficient of friction in each of the cycles is distinctly higher for Material B, which leads to the conclusion that Material B is less resistant to temperature-induced decrease in friction coefficient, i.e. fading phenomenon [13]. …”

Section: Resultsmentioning

confidence: 88%

Comparative Study on the Effect of Fibre Substitution on the Properties of Composite Railway Brake Shoe

Wasilewski

Kuciej²

2017

Proccedings of International Scientific Conference "BALTTRIB 2017"

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During the design process, railway friction materials are subject to extensive testing which allows for a thorough assessment of their compliance with versatile requirements and expected characteristics. These tests include, among other, laboratory tests of mechanical, physicochemical, thermophysical and tribological properties. For a designer it is crucial to understand how formulation modification influences characteristics of the friction material. One of the key ingredients in the formulation of friction materials is reinforcing fibre. In this study, two composite, organic railway brake shoes with equal amount of two different reinforcing fibres, namely steel wool and glass fibre, were tested according to the procedures of a railway friction materials manufacturer. Test results were analysed and compared. The substitution of reinforcing fibre had a noticeable effect on each of the properties of the composites considered in this study.

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Section: Resultsmentioning

confidence: 88%

Comparative Study on the Effect of Fibre Substitution on the Properties of Composite Railway Brake Shoe

Wasilewski

Kuciej²

2017

Proccedings of International Scientific Conference "BALTTRIB 2017"

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“…Among the ingredients currently available for brake pad as a friction material, the reinforced fibers play a crucial role in determining the friction characteristics [4]. The brake pads presently used are generally made from asbestos fiber.…”

mentioning

confidence: 99%

Effects of Mixing the Steel and Carbon Fibers on the Friction and Wear Properties of a PMC Friction Material

2009

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Friction, fade and wear characteristics of a PMC friction material containing phenolic resin, short carbon fiber, graphite, quartz, barite and steel fiber were investigated through using a small-scale friction testing machine. Four different friction materials with different relative amounts of the carbon fiber and steel fiber were manufactured and tested. Comparing with our previous work which contained only steel fiber as reinforcement, friction characteristics such as fade and recovery and wear resistance were improved significantly by adding a small amount of carbon fiber. For the mixing of carbon and steel fiber, the best frictional and wear behavior was observed with sample containing 4 weight percentage carbon fiber. Worn surface of this specimen was observed by optical microscopy. Results showed that carbon fibers played a significant role in the formation of friction film, which was closely related to the friction performance. The brake pad with Steel fibers in our previous work, showed low friction coefficient and high wear rate. In addition, a friction film was formed on the surface with a relatively poor quality. In contrast, the samples with mixing the steel and carbon fiber generated a stable friction film on the pad surface, which provided excellent friction stability with less wear.

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“…An automotive brake lining material requires being light and able to resist high temperature and absorb enough friction energy 6) for the safety purpose. Because of the inherent thermal degradation character of the organic material, a better thermal resistant material is highly demanded.…”

Section: Introductionmentioning

confidence: 99%

“…3) However, an organic brake lining material subjected to a high temperature environment usually experiences a phenomenon called ''fade'', 1,[3][4][5][6] which the normal low-temperature coefficient of friction decreases temporarily. An automotive brake lining material requires being light and able to resist high temperature and absorb enough friction energy 6) for the safety purpose.…”

Section: Introductionmentioning

confidence: 99%

Effect of C2H2/N2 Ratio on Tribological and Mechanical Behavior of Carbon Nanotube Containing Brake Lining Materials Prepared through CVD Process

2009

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Focus of this study has been placed on the influences of carbon nanotube (CNT) on the mechanical and tribological behavior of CNT containing brake lining materials. The commercial friction powder mixed with the same concentration of catalyst sol was fed into the CVD furnace and different ratio of C 2 H 2 /N 2 was adopted to fabricate the CNT containing friction powder. The CNT containing brake lining specimens were fabricated by hot pressing these homemade CNT containing friction powders.Experimental results indicate that the CNT containing brake lining specimens prepared through 30% C 2 H 2 show the lowest open porosity and the highest bulk density. Significant enhancement in mechanical properties of specimens was obtained when the CNT containing friction powders are adopted.The green specimen which was fabricated by hot pressing commercial friction powders shows less stable, higher friction coefficient and larger mass loss during the wear test. On the contrary, the CNT containing brake lining specimens exhibit better performance, lower friction coefficients and lower mass loss. Morphological observations show that smooth, adherent lubricating films are formed on the sliding surface of CNT containing brake lining specimens. Based on the experimental results on friction and wear behavior, although the CNT proves to be beneficial in improving the friction and wear performance of the brake lining materials, too many CNT would result in the higher friction coefficient.

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Fade and wear characteristics of a glass-fiber-reinforced phenolic friction material

Cited by 105 publications

References 13 publications

Comparative Study on the Effect of Fibre Substitution on the Properties of Composite Railway Brake Shoe

Comparative Study on the Effect of Fibre Substitution on the Properties of Composite Railway Brake Shoe

Effects of Mixing the Steel and Carbon Fibers on the Friction and Wear Properties of a PMC Friction Material

Effect of C<SUB>2</SUB>H<SUB>2</SUB>/N<SUB>2</SUB> Ratio on Tribological and Mechanical Behavior of Carbon Nanotube Containing Brake Lining Materials Prepared through CVD Process

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