Brake Pads
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. The effects of porosity in friction performance of brake pad using waste tire dust
Abstract This research is focused on the effect of porosity on the friction-wear properties of automotive brake pads. Waste Tire Dust (WTD) was used as a new friction material in brake pads. Newly formulated brake pad materials with five different components have been produced by conventional techniques. In the experimental studies, the change of the frictio
Polímeros. Publicado em: 2015-10
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2. Estudo da relação entre propriedades de compósitos de fricção aplicados a sistemas de freio a disco e a propensão à ocorrência de Squeal Noise
Automotive brake systems are very often susceptible to generate high frequency noise as a result of a self excited vibration. This phenomenon is generically nominated brake squeal noise and is the subject of many studies which intend to identify and describe its exciting mechanism and to propose counter measures to avoid its occurrence. One key subject yet t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Determinação do raio efetivo em pastilhas circulares de freios a disco em tribômetro / Determination of effective radius in circular pads of disk brakes in tribometer
Este trabalho visa dar continuidade à linha de pesquisa com materiais de fricção utilizando um equipamento especificamente desenvolvido para esse fim. O equipamento encontra-se em condições de funcionamento, porém a medição do raio de aplicação da força é indireta, gerando erros em sua medição. Determinou-se, de forma analítica, o raio efetivo
Publicado em: 2011
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4. Analysis of wear in organic and sintered friction materials used in small wind energy converters
Wind energy converters of small size used in isolated units to generate electrical energy must present low maintenance cost to such facilities economically viable. The aspect to be analyzed in cost reduction is the brake system, since in isolated systems the use of brake is more frequent reducing the brake pads life time. This study aims at analyzing the wea
Publicado em: 2010
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5. Análise comparativa entre ensaios controlados e aplicações reais de pastilhas de freio de caminhões / Comparative analysis between controlled tests and real applications of brakes pads of trucks
Due to the necessity of launching new products and the introduction of new technologies in more and more competitive times, automobile companies develop methods in order to get the approval of its products aiming at reducing the development time and keep meeting the quality requirements. Thus, in the automobile sector test tracks are developed in order to si
Publicado em: 2010
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6. Desenvolvimento de um novo material de pastilhas de freio baseado na substituição de resina fenol-formaldeído por lignosulfonato / Development of a new material for brake pads based in the replacement of phenol-formaldehyde resin by lignosulfonate
As pastilhas de freio são materiais compósitos que têm sido constantemente aperfeiçoadas, principalmente pela substituição por materiais que melhorem o desempenho destes elementos ou diminuam os impactos ao homem e ao meio ambiente. Com a procura de materiais de fontes renováveis para substituir materiais sintéticos, a lignina, uma macromolécula nat
Publicado em: 2010
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7. Analysis of wear in organic and sintered friction materials used in small wind energy converters
Wind energy converters of small size used in isolated units to generate electrical energy must present low maintenance cost to such facilities economically viable. The aspect to be analyzed in cost reduction is the brake system, since in isolated systems the use of brake is more frequent reducing the brake pads life time. This study aims at analyzing the wea
Materials Research. Publicado em: 2008-09
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8. Development of asbestos-free friction lining material from palm kernel shell
Friction materials are applicable for braking and transmission in various machines and equipment. Their composition keeps changing to keep pace with technological development and environmental/legal requirements. For more than 80 years asbestos has been used as a friction material because of its good physical and chemical properties. However, due to the heal
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-06
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9. Disc brake noise analysis using instability of complex eigenvalue / Instabilidade de freios a disco por analise de autovalor complexo
To understand, model and mitigate disc brake noise is still one of the greatest challenges for the automotive industry. It is substantially important for manufacturers and suppliers to predict the disc brake noise in a design phase. Squeal is a brake noise in the 1-15 kHz frequency range, and can be defined as a self-excited friction problem, which can gener
Publicado em: 2008
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10. Estudo de variáveis de composição e processo para controle da compressibilidade
Brake pads for automotive brake systems represent one of the most complex composite materials since they contain many components with widely varying physical and chemical properties. This multiphase nature is necessary to satisfy a wide variety of performance related demands. Processing conditions also have a major influence on the properties of these comple
Publicado em: 2006
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11. Estudo de geração de trincas térmicas em discos de freios de veículos comerciais
The disc brake systems, when compared with the drum brake systems currently used in heavy-duty vehicles, resent significant advantages, such as: better performance in relation to temperature and speed and better braking comfort. On the other hand, the use of those systems submits the brake discs to much higher mechanical and thermal stress than that in brake
Publicado em: 2006
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12. The mechanism of changes in the surface layer of grey cast iron automotive brake disc
The aim of the study was to create a model, describing the run of tribological processes in the surface layer of grey cast iron automotive brake discs. Grey cast iron discs mating with non-asbestos organic brake pads were chosen for the investigations, as the most widely used materials in car brakes. Samples for surface analysis were prepared from disc opera
Materials Research. Publicado em: 2005-12