Chemical and physical properties of carbon as related to brake performance

Blanco, Clara; Bermejo, Jaime; Marsh, H.; Menéndez, Rosa

doi:10.1016/s0043-1648(97)00221-4

Cited by 103 publications

(56 citation statements)

References 16 publications

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“…The friction performance of carbon/carbon composite materials in ambient conditions has been investigated by several authors [3,7,8,9] and the same general trends have been observed in relation to the variation of the friction coefficient with surface temperature. This, together with surface morphology examination, has enabled three distinct friction regimes to be identified.…”

Section: Introductionmentioning

confidence: 66%

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Characterisation of a carbon/carbon multi-plate clutch for a high energy, race car application

Kalare¹,

Brooks²,

Barton³

2016

IJVP

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The torque output of a carbon/carbon multi-plate Formula One clutch during race starts has proved to be both unstable and inconsistent. A specially designed single clutch-plate interface dynamometer (SCID) showed the formation of narrow (~2mm), high-temperature (1300-1650°C) hot bands during tests replicating race start conditions, suggesting that less than 15% of the full friction surface areas were in contact. A thermomechanically coupled finite element analysis (TCFEA) was developed to simulate the thermomechanical behaviour of the clutch plates during SCID testing. With allowance for wear, the TCFEA closely replicated the SCID results. Both the SCID and TCFEA demonstrated no radial movement of the hot bands during single engagements indicating that torque instability is due to surface morphology effects alone. The hot band migration observed between successive SCID engagements indicated that torque inconsistency is due to both surface morphology and hot band migration effects.

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Section: Introductionmentioning

confidence: 66%

“…Blanco et al [3] present a literature review summarising research into carbon/carbon composite brake materials. They note that published papers are limited due to much of the research in this area being carried out by industry and many of the findings being protected by patents.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of a carbon/carbon multi-plate clutch for a high energy, race car application

Kalare¹,

Brooks²,

Barton³

2016

IJVP

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“…Figure 8 shows the CoF, recorded simultaneously with the wear data evolution displayed in figures 5 and 6, and the roughness in figure 7. 1990's to understand environmental effects on friction and wear in the design of disc brakes 12,13 . For studies at the micro-and nano-scale we must, however, relate to studies of non-hydrogenated diamond-like carbon (DLC) coatings.…”

Section: Wear Ratio and Wear Ratementioning

confidence: 99%

Novel method for in-situ and simultaneous nanofriction and nanowear characterization of materials

Broitman

Flores-Ruiz²

2015

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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“…In real terms, this corresponds to about 500kg for each commercial aircraft [2]. Compared to steel, C-C discs are more cost-effective and can deliver an average of about 3000 landings, a figure which is about twice as high as that achieved with steel brakes [3]. In commercial aircraft, the high braking demand requires the sliding interface areas to dissipate approximately 450 kJ.mm -2 of kinetic energy per unit area to heat in about 30 seconds [1].…”

Section: Introductionmentioning

confidence: 99%

“…In commercial aircraft, the high braking demand requires the sliding interface areas to dissipate approximately 450 kJ.mm -2 of kinetic energy per unit area to heat in about 30 seconds [1]. This can lead to high levels of heat generation which has been reported to result in temperatures around 1000°C [3] and up to 1400°C particularly during an aborted take-off [4]. At such high temperatures, the C-C brakes can suffer oxidation and therefore, the lifetime of aircraft brakes is dependent on the rate of oxidation.…”

Section: Introductionmentioning

confidence: 99%

A review of the catalytic oxidation of carbon–carbon composite aircraft brakes

Bevilacqua

Babutskyi

Chrysanthou

2015

Carbon

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The use of de-icing chemicals at airport runways has been shown to produce oxides and carbonates of sodium, potassium and calcium which catalyse the oxidation of carbon-carbon composite aircraft brakes leading to an increase of the oxidation rate by an order of magnitude. This review reports on studies that have characterised the catalytic oxidation and discusses the mechanism of the catalytic reaction based on investigations that were carried out with both C-C composites and carbon as a fossil fuel. The alkali metal oxides/carbonates are more active catalysts and in their case, the redox reaction between the monoxides and the peroxides has been identified as the most likely catalysis mechanism. In order to reduce or eliminate the problem of catalysis, doping with boron or phosphorus compounds has been investigated by a number of researchers. The effect of these along with the use of protective coatings is also reviewed.3

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Chemical and physical properties of carbon as related to brake performance

Cited by 103 publications

References 16 publications

Characterisation of a carbon/carbon multi-plate clutch for a high energy, race car application

Characterisation of a carbon/carbon multi-plate clutch for a high energy, race car application

Novel method for in-situ and simultaneous nanofriction and nanowear characterization of materials

A review of the catalytic oxidation of carbon–carbon composite aircraft brakes

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