Search results for "Brake"
showing 10 items of 26 documents
Neural modelling of friction material cold performance
2008
The complex and highly non-linear phenomena involved during braking are primarily caused by friction materials’ characteristics. The final friction materials' characteristics are determined by their compositions, manufacturing, and the brake's operating conditions. Analytical models of friction materials' behaviour are difficult, even impossible, to obtain for the case of different brakes' operating conditions. That is why, in this paper, all relevant influences on the friction materials' cold performance have been integrated by means of artificial neural networks. The influences of 26 input parameters, defined by the friction materials' composition (18 ingredients), manufacturing (five pa…
Possible markers of traffic-related emissions
2007
Looking for robust indicators of motor vehicle emissions it has been found that brake wear and linings are significant contributors of Cu, Mo and Sb to air particulate matter. These trace elements, whose mutual ratios in airborne particulate matter resulted quite different from those in crustal material, appear to be available fingerprinting tools to identify the contribution of on-road vehicles to traffic-derived particulate matter. In this study, the results of analytical determinations of Cu, Mo and Sb on PM(10), PM(2.5), vegetation and brake dust samples, together with gas (CO, NOx) concentrations, are discussed. Highly significant correlations among Cu, Sb and Mo were observed in parti…
A COMPARATIVE STUDY OF PHENOMENOLOGICAL MODELS OF MR BRAKE BASED ON NEURAL NETWORKS APPROACH
2013
In this paper a full-scale commercially available magnetorheological (MR) brake installed in a semi-active suspension (SAS) system is modeled and simulated. Two well-known phenomenological hysteresis models are explored: Bouc–Wen and Dahl ones. In particular, influence of their parameters on the response is evaluated and assessed. The next step is to introduce the artificial neural networks and discuss their application in the field of systems identification. Subsequently, two feedforward neural networks are created and trained to estimate parameters characterizing each of the MR damper models described. The semi-active suspension (SAS) system equipped with a MR brake is described and the …
Speciation of Sb in airborne particulate matter, vehicle brake linings, and brake pad wear residues
2013
Insights into the speciation of Sb in samples of brake linings, brake pad wear residues, road dust, and atmospheric particulate matter PM10 and PM2.5 were obtained combining several well established and advanced characterization techniques, such as scanning electron microscopy e energy dispersive spectrometry (SEM-EDS), inductively coupled plasma mass spectrometry (ICP-MS) and synchrotron radiation X-ray absorption spectroscopy (SR-XAS). The advantage of SR-XAS is that samples do not undergo any chemical treatment prior to measurements, thus excluding possible alterations. These analyses revealed that the samples of wheel rims dust, road dust, and atmospheric particulate matter are composed…
Practice of diesel fuel blends using alternative fuels: A review
2016
Abstract In order to meet the growing global energy requirement, exhaustive research is carried to develop and to use variety of renewable fuels. Concerns on the long-term availability of petroleum diesel and the stringent environmental norms have mandated the search for a renewable alternative to diesel fuel to address these problems. Diesel engines have proven their utility in the transportation, agriculture, and power sectors for small energy needs as a potential source of decentralized energy generation for electrification. Mixing of diesel fuel with biodiesel has been considered as good alternative to diesel in the past couple of years. The objective of the present study is to compare …
An investigation of thermal behaviour of brake disk pad assembly with Ansys
2021
Abstract The brake disk is a key part of the braking mechanism, the task of it is to slow or stop the vehicle's wheels, on the one side, while the heat produced during the process is dissipated. In this regard, the brake pads are pressed by mechanical strength on the surface of the brake disks. This study aims to develop a model of a disk brake by use of CATIA V5, on the model, finite element analysis (FEA) done by ANSYS 19 then compare it to the findings gained by the original tests. A computational thermo-mechanical study was conducted on this research by use of ANSYS software for disk brake mounting inside a hydraulic brake system. This study is designed to provide insight into the heat …
Aalto-1, multi-payload CubeSat: Design, integration and launch
2021
The design, integration, testing, and launch of the first Finnish satellite Aalto-1 is briefly presented in this paper. Aalto-1, a three-unit CubeSat, launched into Sun-synchronous polar orbit at an altitude of approximately 500 km, is operational since June 2017. It carries three experimental payloads: Aalto Spectral Imager (AaSI), Radiation Monitor (RADMON), and Electrostatic Plasma Brake (EPB). AaSI is a hyperspectral imager in visible and near-infrared (NIR) wavelength bands, RADMON is an energetic particle detector and EPB is a de-orbiting technology demonstration payload. The platform was designed to accommodate multiple payloads while ensuring sufficient data, power, radio, mechanica…
Data Acquisition System for the Characterization of Biomechanical and Ergonomic Thresholds in Driving Vehicles
2020
Directive (EU) 2015/653 on driving licenses has involved the modification of different codes that must appear on driver&rsquo
Numerical and experimental analysis of a pegs-wing ventilated disk brake rotor, with pads and cylinders
2005
Imagología: un emblema holandés del siglo XVIII sobre la imagen del español
2009
El presente artículo analiza el emblema «De Spanjaart» [«El español»] del libro StichtelykZinnebeelden [Emblemas edificantes] de Arnold Houbraken y GezineBrit (Amsterdam, 1723) a la luz de los estereotipos que sobre la imagen de los españoles prevalecían por entonces en Holanda y en el contexto de la disciplina de la Imagología. The present article analyzes the emblem «De Spanjaart» [«The Spaniard»] from the book Stichtelyk Zinnebeelden [Edifying Emblems] by Arnold Houbrakenand Gezine Brit (Amsterdam, 1723) in the light of the stereotypes of the image of Spaniards prevalent in Holland at that time and in the context of the discipline ofImagology (Imagestudies).