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Wodne dyspersje polimerowe w materiałach ciernych

100%

Rajkiewicz M. , Mikołajska A. , Tarniowy A.

Elastomery

2009

tom T. 13, nr 2

17-21

Wodne dyspersje polimerowe butadienowo-akrylonitrylowe (XNBR) i butadienowo-styrenowe (XSBR) zastosowano w kompozytach polimerowych przeznaczonych do materiałów ciernych.

The hydrous polymer dispersions of butadiene-acrylonitrile rubber XNBR and butadiene-styrene rubber XSBR were applied in polymer composites for the use in frictional materials.

Effects of combined coconut shell and pistachio shell as filler and frictional additive on the properties of particulate type of green friction composites

75%

Shete H. V. , Jadhav P. S.

Engineering Transactions

2024

tom Vol. 72, iss. 3

327--341

Nowadays, cost effectiveness and environment friendliness are crucial requirements for any frictional material along with good frictional stability. Conventional filler materials, such as fly ash, are harmful and create pollution. In contrast, coconut shell and pistachio shell are inexpensive, abundant and green materials, which are otherwise considered agricultural waste. Coconut shell has good heat resistance but poor friction resistance, whereas pistachio shell has good abrasion resistance but poor thermal stability and mechanical properties. Therefore, this study presents the use of a firsthand blend of coconut shell and pistachio shell as cost-effective filler and frictional additive to develop a green frictional composite material. The material samples are prepared and tested for physical, mechanical and tribological properties using different blends of coconut shell-pistachio shell powder and binder. The developed friction composites show low water and oil absorption, high flame resistance, thermal conductivity, hardness, higher wear resistance and improved coefficient of friction (COF) for lower amounts of coconut shell and pistachio shell. As the developed frictional composites use natural waste (25% to 35%) instead of fly ash or other pollutant ingredients, they contribute to minimizing pollution and waste disposal problems.

Investigation of influence of frictional material’s characteristics of brake blocks of railway transport on their functional thermal state

63%

Starchenko V. , Kushchenko A.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

2010

tom 10B

Numerical analysis of the thermal behaviour and performance of a brake system with temperature-dependent material properties

63%

Hassan M. A. , Ali M. , Abdullah O. I.

Archives of Materials Science and Engineering

2023

tom Vol. 122, nr 2

58--69

Purpose: The brake system is the most significant component of a vehicle because it protects the driver, passengers, other road users, and property on both sides of the road. The basic principle of the disc brake system depends on the friction-based between the brake pads and rotor disc. Design/methodology/approach: The paper introduced a developed 3D finite element thermal model of the brake system to simulate the heat generated by friction in the vehicle's disc brake. Findings: The results presented the surface temperature at any instant of the disc brake under various initial velocities when the materials properties of the rotor disc and pad depend on temperature. Research limitations/implications: The main aim of the present paper is to build a numerical model to simulate the braking process under various initial vehicle velocities and investigate the influence of the material properties when they function on temperature and constant. Originality/value: The maximum difference between the two cases (contact and depend on the temperature) was 17 K for the initial velocity of 144,120. Also, it was found out that the percentage differences of the surface temperature increasing with the rise in initial vehicle velocity were 323% and 392.5% when the initial velocity of the vehicle increased from 100 km/h to 144 km/h.