Polymeric Materials Modified by Semiconductor Substances in Friction Units of Braking Devices

Киндрачук, М. В.; Вольченко, О. І.; Вольченко, Дмитро Олександрович; Volchenko, N. O.; Polyakov, P. A.; Kornienko, Anatolii; Yurchuk, Alina; Ukraine, Gas (Ifntuog), , Karpatska str., Ivano-Frankivsk,

doi:10.21272/jnep.11(3).03014

Cited by 7 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is provided by required structural parameters of textured surface. Change of surface geometry [4,9,25] differently influences tribotechnical characteristics, duration of runningin and duration of latent period.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fretting-Wear Mechanism of Textured Surfaces

Pashechko¹,

Marchuk²,

Киндрачук³

et al. 2019

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

The wear mechanism of textured dimpled in conditions of lubricated fretting-wear is established, which, in contrast to others, takes into account possibility of removing deterioration products out of tribo-contact areas into dimples, preventing their action as abrasive material. Selection of optimal structural parameters of selectively dimpled areas allows to reduce duration of tribological couple running-in time. Depending on texture type, friction coefficient was reduced from 0.27 (for untreated furface) to 0.18, and wear loss-from 7.8 ×10-3 g to 3.3 ×10-3 g.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The application of composite texture even improves noise performance of journal bearings [8]. Other authors pay attention to electrodynamic prosesses and concider contact of microasperities (depending on type) as contact of metal-semicinductor or two dissimilar semiconductors [9]. Textured surfaces may be produced by variety of methods.…”

Section: Introductionmentioning

confidence: 99%

Fretting-Wear Mechanism of Textured Surfaces

Pashechko¹,

Marchuk²,

Киндрачук³

et al. 2019

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

show abstract

“…It should be noted that other components also make changes to the above processes and effects. It has been established that two double electric layers are formed in the brake friction couples: the first is the surface of the microasperities tops of the disc friction belt (negatively charged) -a layer of water between the microasperities (negatively charged); the second is the surface of the microasperities tops of the friction pad (positively charged) -a layer of water between the microasperities (negatively charged) [15][16][17][18][19][20][21]. J. NANO-ELECTRON.…”

Section: Processes and Effects Arising From The Frictional Interactiomentioning

confidence: 99%

Electrothermomechanical Friction of Wet Elements of Automotive Disc-shoe Brakes

Volchenko¹,

Ukraine²,

Киндрачук³

et al. 2020

J. Nano- Electron. Phys.

Self Cite

View full text Add to dashboard Cite

In the article, attention is paid to the factors affecting the limiting wetting angle of both polished and matte side surfaces of solid and self-ventilated discs of vehicles brake devices when they are moving on a wet roadbed. The following factors are considered: the material of the friction elements and its structure, the energy level of the surface layer, the topography of the friction surfaces and the geometric parameters of their microasperities, the presence of pores and grooves in them, capillary, centrifugal and inertial forces and moments, dynamic equilibrium between the energy level of the friction surface and a water film on it. In examining the microgeometry of the disc friction surface, its area, the ratio of the microasperities height to their pitch, the intensity of changes in their height and the degree of contamination were taken into account. It was found that the surface microgeometry affects the heat of desorption of the water film. The research of the above factors has shown that the driving force of the processes and effects in wet brake friction couples are potential gradients arising as a result of action of transverse and longitudinal electric double layers. The triboelectric water-effected phenomena were studied. The test results of self-ventilated disc-shoe brakes of MAN trucks (model TGA 26.420) with dry and wet friction couples tested with 20-fold cyclic braking are presented (speed drop 30 km/h per 1 min). The registered temperature at the interface was 320-340 °C. As a result of the road tests carried out on a truck with wet brake friction couples, regularities of the braking time, braking torque and braking distance depending on the dynamic coefficient of friction were established. The analysis of the obtained data was carried out. The results of studies of the negative effect of water penetration into disc-shoe interface are given.

show abstract

“…The efficient surface texture allows designing a tribotechnical surface with high performance. The formation of dimples also reduces the run-in period [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The Mathematical Model of Motion Trajectory of Wear Particle Between Textured Surfaces

Marchuk¹,

Киндрачук²,

Krysak³

et al. 2021

Tribol. Ind.

View full text Add to dashboard Cite

An effort was made to obtain a simplified mathematical model of wear particle motion in a magnetic field formed between flat and dimpled surfaces during the friction process. The magnetic field's experimental values on the dimple edge and inside the dimple for several materials are presented. As a direct result of the internal magnetic field's excitation at the edges of indentations, debris falls into the dimple. This reduces the wear rate by decreasing the number of abrasives in the friction interface. Apparent results expand ideas about the phenomena that naturally occur during the friction of textured surfaces.

show abstract

Polymeric Materials Modified by Semiconductor Substances in Friction Units of Braking Devices

Cited by 7 publications

References 0 publications

Fretting-Wear Mechanism of Textured Surfaces

Fretting-Wear Mechanism of Textured Surfaces

Electrothermomechanical Friction of Wet Elements of Automotive Disc-shoe Brakes

The Mathematical Model of Motion Trajectory of Wear Particle Between Textured Surfaces

Contact Info

Product

Resources

About