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

Abstract

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.

Prediction of Brake Pad Wear of Trucks Transporting Oversize Loads Based on the Number of Drivers’ Braking and the Load Level of the Trucks—Multiple Regression Models

“…The test checks the number of residuals in plus ρ+ and in minus ρ−. We pose hypotheses (17) as follows:…”

“…This problem is particularly dangerous for trucks with trailers or semi-trailers [16]. As the authors point out [17] (p. 1) "… 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". Overheating of the brake system significantly reduces the friction coefficient of the brake pad against the brake disc.…”

Method of Failure Diagnostics to Linear Rolling Guides in Handling Machines

“…Linear motion mechanisms are often used in CNC machines, industrial robots, or handling machines, wherein they ensure the primary function of these machines—positioning or transporting objects. As linear rolling guides are basic components of linear mechanisms, their failure means disabling machine function, stopping the production process, and, consequently, generating production losses [ 1 , 2 ]. Therefore, production companies expect high reliability and demand prediction of possible failures.…”