Análise estrutural de juntas rebitadas de uso aeronaútico

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise da distribuição de cargas e das forças entre asseno e encosto, na postura sentada adequada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise extensométrica de cargas estáticas axiais e não axiais em próteses implantossuportadas de três elementos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do tipo de fundição e uso de retificação na interface pilar/cilindro protético na adaptação marginal e tensão peri-implantar sobre conexão protética tipo Micro-Unit

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Implementação de microrredes residenciais em corrente contínua através da microgeração

This paper discusses the importance of energy efficiency and the use of alternative energy sources, facing to the increasing energy demand and the concomitant economic, social and environmental restrictions imposed by society. In this work, alternative sources are illustrated by photovoltaic, micro turbines and fuel cells microgeneration systems. Energy efficiency is presented by direct current microgrids because its uses excludes the conversions of direct current (DC) to alternating current (AC) losses made with the intention of injecting energy into the electric grid and then the inverse conversion, AC to DC, in order to feed residential loads. The object of this paper is to analyze a case study and evaluates the costs and technical feasibility of a Project that combines a DC microgrid and a microgeneration system

Projeto de um transdutor binocular utilizando extensometria e aplicação na pesagem rodoviária

With the passage of time, the variety of companies from each branch has gradually grown throughout the country. As a consequence, the logistics to attend to such demand has grown in the same proportion. One factor to highlight about this rapid growth is the increase of freight vehicles roaming the roads, often carrying loads over the limit established by law. At first it may seem that this would not bring any problem, however, note that an excessive number of overloads ends up deteriorating the asphalt, causing ondulations, potholes and other imperfections on the roads, which can cause accidents. In addition, the money spent for the maintenance of the roads is high. Thinking about it, it was established by law a regulation that restricts the weight limit for these vehicles, through axle weighing, subject to a fine. With this control the road floor is preserved for longer, requiring less maintenance expenses. The weighing stations use load cells to display the inferred weight, these cells use strain gages in its construction. The following work presents a methodology to dimension a binocular load cell, its main elements and its dimensioning. Showing how different materials can affect the dimensioning, so that can work satisfactorily. It also presents an overview of how are the parameters for weighing, and fines

Estudo, desenvolvimento e concepção de uma célula de carga

In engineering projects, it’s fundamental to determine the active loads in components in order to guarantee acceptable values of safety and reliability according to project specifications. On the other hand, force measurement methods might be very complex and impracticable in some cases and, so that, load cells with eletric resistance strain gages can be applied as a simple and accurate option to measure the required load. The main purpose of this paper is to present the development of a load cell that measures uniaxial forces using electric resistance strain gages without being influenced by the location of the loading in a cantilever beam. For that, it was taken as basis a secondary purpose which is to present a general study of basic and wide concepts about transducers, load cells and extensometers primarily. Information such as: loading and measurements types, characteristics of the presented devices as well as factors that influence its functioning, the most common kinds of Wheatstone bridge links, the main points of a load cell project, cements used to fix extensometers and, finally, the project itself with the tests of the built transducer are presented. By the end of this paper, all the results are shown and analyzed, concluding about the designed load cell and the work itself