Towards a general theory of tribological systems

Czichos, Horst; Mølgaard, J.

doi:10.1016/0043-1648(77)90143-0

Cited by 11 publications

(3 citation statements)

References 7 publications

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“…Friction materials which are made by powder metallurgical technique, have been widely used in commercial/fighter aircrafts; high speed trains; brakes; clutches and gear assemblies of different kinds of automobiles [1].…”

Section: Introductionmentioning

confidence: 99%

Development of Iron Based Brake Friction Material by Hot Powder Preform Forging Technique used for Medium to Heavy Duty Applications

Asif¹,

Chandra²,

Misra³

2011

JMMCE

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A promising friction material, Iron -based friction material, was prepared by powder metallurgy (PM) processing utilizing hot powder preform forging (near net-shape).The preparation of the product and its characterization are presented in this paper. These products are useful in heavy duty Military Aircraft applications such as AN-32. In order to eliminate costly environmental control systems to protect products during their high temperature processing (as is conventionally practiced employing hydrogen gas), the present investigation relies on carbon (mixed in the brake pad formulation) as reducing agent and high temperature oxidation resistant glassy coating (separately developed) applied over the product's surface after cold compacting. After conducting an initial characterization such as hardness, density and Pin-on Disc tests, the samples were tested in sub-scale dynamometer under Rejected Take Off conditions. It was observed that the obtained density in the present investigation is higher than the reported density obtained by sintering route, and wear is on the lower side of the range as per the Aeronautical Standards. Optical metallography was used to investigate the microstructure of friction, interface and backing layer. It was observed that the distribution of ingredients in matrix was homogeneous. The results also indicate that the coefficient of friction is more stable, and wear is lower with respect to temperature rise. .

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Section: Introductionmentioning

confidence: 99%

Development of Iron Based Brake Friction Material by Hot Powder Preform Forging Technique used for Medium to Heavy Duty Applications

Asif¹,

Chandra²,

Misra³

2011

JMMCE

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“…Ferrofluids (FFs) are one of the critical magnetic nanofluids comprising suspended nanoparticles in a carrier fluid, which shows substantially improved performance at the interface between tribopairs as a lubricant, mechanical damper, sensor, refrigerant and many more. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Further, the complexity related to friction and wear has been raised by many researchers and suggested a possible solution concerning subject expertise. [15][16][17][18][19] It was noticed that the system approach can be the appropriate way to address effective tribological design.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of ferrofluid lubrication on tribological performance of metal tribopairs

Shah,

Shukla,

Patel

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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This study has investigated the influence of ferrofluid lubrication on metal tribopairs using an indigenous Block-on-Ring tribometer as per the G77 standard. Considering the complexity of the ferrofluid-based tribosystem, the experiments were carried out based on a previously proposed level-based simplified tribosystem. It is observed that the impact of ferrofluid as an interaction parameter and magnetic field as an environmental parameter has significantly affected tribological properties, that is, ∼60% less friction and ∼74% less wear loss compared to an equivalent oil-based tribosystem. Further, it is noticed that ferritic shaft-based tribosystem lubricated with ferrofluid has better tribological characteristics compared to austenitic shaft-based tribosystem. Also, it had been that a specific testing hierarchy is followed between the performance parameters. Any changes in this testing hierarchy might affect the tribological characteristics.

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Mechanisms of Ice Friction

Mølgaard

1991

Ice-Structure Interaction

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Towards a general theory of tribological systems

Cited by 11 publications

References 7 publications

Development of Iron Based Brake Friction Material by Hot Powder Preform Forging Technique used for Medium to Heavy Duty Applications

Development of Iron Based Brake Friction Material by Hot Powder Preform Forging Technique used for Medium to Heavy Duty Applications

Effect of ferrofluid lubrication on tribological performance of metal tribopairs

Mechanisms of Ice Friction

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