Influence of Temperature on the Tribological Properties of Composites for Brake Pads

Yusubov, F. F.; Hurey, Ihor

doi:10.1007/s11003-021-00535-0

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Design, technological and operational methods are used to ensure the reliability and long-term operation of brakes. During the design of brakes, researchers focus on the rational choice of materials for the manufacture of brake pulleys, discs and drums and brake pads [26][27][28][29], study the nature of temperature distribution in brakes using analytical methods [30][31][32][33] and numerical modeling [34][35][36][37][38] and conduct laboratory and field tests of materials for corrosion resistance [39] and wear [40][41][42]. To describe the frictional interaction, taking into account the wear products of metal-polymer pairs, it is possible to use models of non-stationary processes in sliding contact with complicated interface rheology [43,44].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

Mandziy,

Ivasenko,

Berehulyak

et al. 2024

Lubricants

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The improvement of drilling rig systems to ensure a reduction in unproductive time spent on lowering and lifting operations for replacing drilling tools and restoring the performance of drilling equipment units is an important task. At the same time, considerable attention is paid to the reliable and efficient operation of the braking systems of drilling rig winches. In the process of operation, the polymer pads periodically come into contact with the outer cylindrical surface of the metal pulley during braking, work in extreme conditions and wear out intensively, so they need periodic replacement. Tests were carried out on a modernized stand and in industrial conditions for the brakes of drilling winches. A methodology for evaluating the degradation of the brake pad friction surface during its operation is proposed. The assessment of the degradation degree is carried out based on the image of the brake pad surface using image processing techniques. Geometric transformations of the input image were performed to avoid perspective distortions caused by the concave shape of the brake pads and the spatial angle at which the image is acquired to avoid glares. The crack detection step was implemented based on the scale-space theory, followed by contour detection and skeletonization. The ratios of the area and perimeter of segmented and skeletonized cracks to the total area were chosen as integral characteristics of the degradation degree. With the help of scanning electron microscopy, the character of the destruction of the friction surface and the degradation of the polymer material was investigated. Experimental studies were performed, and the application of the proposed method is illustrated.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

Mandziy,

Ivasenko,

Berehulyak

et al. 2024

Lubricants

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“…In paper [41], the process of wear and heating of the composite overlay with a constant coefficient of thermal conductivity was experimentally verified. The work [42] investigated the temperature distribution in the elements of a friction pair consisting of functionally gradient and homogeneous materials, but did not consider various options for changing the thermal conductivity of materials.…”

Section: Introductionmentioning

confidence: 99%

Analytical study of heat transfer through friction overlay of band-pad brakes

Pazen

Tatsiy

Ropyak

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper analyses the operating conditions of band-pad brakes of drilling winch, materials and coatings for strengthening the metal elements of friction pairs. Methods of researching the thermal and stress-strain state of elements of brake friction units are considered. The problem of the development and theoretical research of the properties of new polymer materials with gradient properties for the production of friction overlays of band-pad brakes with improved operational characteristics is singled out. A mathematical model heat transfer through friction overlays of band-pad brakes of drilling winches with a variable coefficient of thermal conductivity of the material based on the thickness of the specified overlays has been developed. According to the developed mathematical model, an analytical study of the process of heat transfer through the friction overlays of band-pad with variable coefficient of thermal conductivity of their polymer material according to the thickness of the friction overlays was carried out according to different laws. It was established that the highest intensity of heat removal from the friction zone of the brakes is ensured when the thermal conductivity coefficient changes according to the law described by a second-order polynomial.

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Influence of Temperature on the Tribological Properties of Composites for Brake Pads

Cited by 2 publications

References 8 publications

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

Analytical study of heat transfer through friction overlay of band-pad brakes

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