A Comprehensive Study of Humidity Effects on Friction, Pad Wear, Disc Wear, DTV, Brake Noise and Physical Properties of Pads

Kim, Shin Wook; Lee, Seong Joo; Park, Byeong Kyu; Rhee, Seong Kwan

doi:10.4271/2011-01-2371

Cited by 17 publications

(4 citation statements)

References 4 publications

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“…Comparing the results from the publications [109][110][111], in which the increase in the brake discs' temperature during repeated braking was determined only via calculations, the temperature during the real measurements did not increase in an orderly way, but some values of temperature slightly deviated (Figure 11). The reason can be a synergy of several circumstances, such as interaction of brake pads and brake discs, air humidity, manmade deviations in time of measuring, and so on [19,112,113]. These cannot be avoided completely even under laboratory conditions.…”

Section: Results Of the Measurement Of Brake Discs' Temperature Durin...mentioning

confidence: 99%

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

2022

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The purpose of a road vehicle’s friction brakes is to convert a vehicle’s kinetic energy to thermal energy. When doing so, the brakes should not be heated to such temperatures at which their efficiency could be reduced. The objective of the measurements in this article is to assess the ability of passenger brakes’ spare parts, brake discs and brake pads to meet the requirements for brakes. For the experimental measurements, brake discs and brake pads of high, middle and low prices were selected from advertisements intended for a particular vehicle. The measurements were performed via driving test measurements as well as under laboratory conditions. Driving test measurements determined the brake distance and mean fully developed deceleration of the brake components of all three price categories. On the other hand, the dependence between the effort to control the steering and the brake force, as well as the temperature of brake discs during repeated interrupted braking and continuous uninterrupted braking, were determined under laboratory conditions. Attention was also given to prevention against corrosion. The results show a sufficient ability of all the brake pads and brake discs tested to generate braking force under common conditions. However, when using the lowest-priced brake discs and brake pads, a substantial reduction in their efficiency can occur if braking intensively or over a long period.

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Section: Results Of the Measurement Of Brake Discs' Temperature Durin...mentioning

confidence: 99%

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

2022

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“…A chassis dynamometer can evaluate various parameters related to brake wear in laboratory environments. Humidity and its effects on the rate of pad or disc wear is one example of such a parameter, which has been comprehensively studied in [176,177].…”

Section: Laboratory (Chassis Dynamometer)mentioning

confidence: 99%

Input Parameters for Airborne Brake Wear Emission Simulations: A Comprehensive Review

2021

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Non-exhaust emissions, generated by the wear of brake systems, tires, roads, clutches, and road resuspension, are responsible for a large part of airborne pollutants in urban areas. Brake wear accounts for 55% of non-exhaust emissions and significantly contributes to urban health diseases related to air pollution. A major part of the studies reported in the scientific literature are focused on experimental methods to sample and characterize brake wear particles in a reliable, representative, and repeatable way. In this framework, simulation is an important tool, which makes it possible to give interpretations of the experimental results, formulate new testing approaches, and predict the emission produced by brakes. The present comprehensive literature review aims to introduce the state of the art of the research on the different aspects of airborne wear debris resulting from brake systems which can be used as inputs in future simulation models. In this review, previous studies focusing on airborne emissions produced by brake systems are investigated in three main categories: the subsystem level, system level, and environmental level. As well as all the information provided in the literature, the simulation methodologies are also investigated at all levels. It can be concluded from the present review study that various factors, such as the uncertainty and repeatability of the brake wear experiments, distinguish the results of the subsystem and system levels. This gap should be taken into account in the development of future experimental and simulation methods for the investigation of airborne brake wear emissions.

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“…The proper composition of the brake pads contributes to the smooth performance of vehicle braking. 1,2 It provides a high coefficient of friction and less wear. Proper selection of friction material requires specified quantities of constituents based on experience and experiments to make new formulations.…”

Section: Introductionmentioning

confidence: 99%

Review of automotive brake lining materials and their tribological properties

Ahdy

Ali

Mourad

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Brake lining material properties are considered an essential aspect of the safe operation of vehicles. The presented paper aims to present a comprehensive review of brake lining materials and their tribological properties including the proposed materials, their advantages and disadvantages, analysis of results, and test rig experiments. The first section of the paper includes brief information on brake lining materials, friction modifier additives, and recent developments in friction additives. The second section discusses the tribological performance of brake lining materials. Furthermore, the key mechanisms of the friction layer produced on the worn brake lining surface have been explained microscopically (HRTEM). Part of this review is devoted to demonstrating current research gaps and challenges related to brake performance in automotive for further research. In brief, this review study is highly significant, as it provides more detailed information regarding the performance of brake lining materials.

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A Comprehensive Study of Humidity Effects on Friction, Pad Wear, Disc Wear, DTV, Brake Noise and Physical Properties of Pads

Cited by 17 publications

References 4 publications

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

Input Parameters for Airborne Brake Wear Emission Simulations: A Comprehensive Review

Review of automotive brake lining materials and their tribological properties

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