Estudo de casos de seleção dos materiais e processos para a fabricação de fuselagens

This work proposes a study on the materials selections and processes for the manufacture of aircraft and showing a methodology to reduce the manufacturing cost. The DFMA can be understood as a methodology that aims at reducing manufacturing and assembly costs and coupled with the increase of product quality through design simplifications. The most commonly material used in the manufacture of aircraft is aluminum alloys due to these possess great structural strength, good elasticity, and being stainless having a low specific weight (about 1/3 that of steel), reducing the weight of the aircraft. A case study in which an operation in the process of verifying the quality was generating unnecessary costs time / man for the company was also developed. The problem solution was simple, just removing the attachment process. It was found that the DFMA methodology is extremely important for the simplification of processes and projects, contributing to the reduction of manufacturing costs of aircraft

Estudo das propriedades físicas em materiais vítreos do sistema 50B2O3 - 15CuO - 20Li2O - 15X (X= Na2O, K2O, RbCI e Cs2O)

The increasing demand for devices for solid state applications in many technological areas has resulted in a high demand for new materials. Among these material have the advantage of being manufactured with different chemical compositions, and may have physical properties equal to or higher than the corresponding crystalline material. The aim of this paper was to produce borate glass system 50B2O3 – 15CuO – 20Li2O – 15X (X = Na2O, K2O, RbCl e Cs2O) to analyze the influence of the atomic radius of alkali in the physical properties of this glass system. The glasses were synthesized by the process of melting and molding. The characteristic temperatures were determined by the technique of scanning calorimetry (DSC). The non-crystalline was determined by x-ray diffraction. In order to determine the molar volume a density measurement by using the Archimedes method was used. The structural characterization was carried out using the technique of infrared spectroscopy

Estudo teórico da contribuição do espalhamento nuclear não elástico na trajetória de prótons de energias entre 50 e 250 MeV em materiais de interesse em radiologia: aplicação em tomografia com prótons

The goal of this work is to study the process of interaction of protons with matter through Monte Carlo simulation. For this purpose, it was employed the SRIM program (Stopping and Range of Ions in Matter ) and MCNPX (Monte Carlo N-Particle eXtended) v2.50. This work is going to support the development of a tomography system with protons. It was studied the interaction of proton with the follow materials: Polimethyl Mehacralate (PMMA), MS20 Tissue Substitute and water. This work employed energies in range of 50 MeV and 250 MeV, that is the range of clinical interest. The energy loss of proton after cross a material layer, the decreasing of its intensity, the angular and lateral de ection of incident beam, including and excluding nuclear interactions. This work is related with Medical Physics and Material Physics, like interaction of radiation with matter, particle transport phenomena, and the experimental methods in Nuclear Physics like simulation and computational by Monte Carlo method

Física de partículas no ensino médio: uma análise de materiais para apoio didático

This work consisted in analysing five materials which mean respect to subjects related to Particle Physics, aiming to explore their potentialities for the use in the High School levels, particularly by physics teachers. On this perspective, we sought to describe the contents of each material and point out their potentialities as material of didactic support. They are: 1. The purpose of Secretaria da Educação do Estado de São Paulo, presented in the Teacher's Guide of the Program São Paulo faz escola; 2. The Game Sprace Game, elaborated by the European Organization for Nuclear Research (CERN); 3. The book O discreto charme das partículas elementares, written by the professor Maria Cristina Abdalla; 4. The video O discreto charme das partículas elementares, based on the book of Professor Maria Cristina Abdalla which was produced by TV Cultura in association with the Ministério da Educação e Cultura” (MEC). The book Partículas elementares no ensino médio: uma abordagem a partir do LHC written by Wagner Franklin Balthazar and Alexandre Lopes de Oliveira, from the collection CBPF - Tópicos de Física. The work was constructed on a qualitative perspective, that is, it did not attempt to quantify the help that each material could offer to Physics teaching. One sought to describe and analyse, from different theoretical frames, their potentialities for the use in the High School level. The results indicate that all the materials analysed can contribute to the Physics teaching, and beyond, as they own format and approches distinct from the subject, they can be used as a whole or in parts, together or separately, depending on the objectives to be reached and on the profile of the target public

Desafios ambientais na indústria automobiliística: uma análise do processo de reciclagem e reutilização de materiais

This research has as main objective the analysis of the auto industry has done to reduce disposal of solid waste in its production process as much as to facilitate the recycling of cars after they complete their life cycle. Despite the auto industry is not one of the most polluting in terms of its production process, it produces a good that is causing major pollution. In despite of the great current concern in seeking to reduce the emissions of pollutants by vehicles, as important as the quest for cleaner fuels is the study of how to dispose of old cars. Even if the car production does not increase significantly each year in relative terms, we must consider the fleet of used cars that still circulates in the world. Ending the mammoth “cemeteries” of automobiles, however, it is not so easy, even because the car is composed of various materials, which in many cases are not easily separable. In addition to an overview, the research seeks to examine the possible advances in Brazil related to the process of auto recycling

Processamento de peças em materiais compósitos para o projeto BAJA SAE

The weight of a vehicle has always been considered an extreme important factor, because it interferes in the performance, steering, consume, environmental impact, wear of components, among the others. Because of the new demand, consume reduction aim and gases emission increased the necessity to manufacture lighter vehicles, guaranteeing the complying with the gas emission international law. Besides the legal demand, the low weight will certainly be essential for the competitiveness for the next generation of vehicles. It is with this thinking the composite materials have been introduced in the automobilist industry, because those materials show an excellent relation of strength/weight, providing a reduction of consume and the increase of load capacity. Those factors justify the increase of interest of industry and the necessity of optimization of those materials and of their process. For this research, the field of application will be the Baja SAE Project, a project that is fully developed by engineering students, where they build a prototype single seat, off-road category, for use on hilly slopes with obstacle. This research aims to study two key components of the prototype are made of composite materials, analyzing all the processing. In addition, there is the analysis of the viability of this production parts to a Baja SAE vehicle, in order to increase their performance and reduce their weight without reducing the safety and robustness of the prototype. It was possible to achieve weight reduction of the steering subsystem with manufacturing the flywheel hybrid composite (carbon/glass) and the replacement of SAE 1010 steel by hybrid composite (carbon/aramid) in CVT box. The importance of this study is to obtain a good project for the vehicle of technical and scientific manner, contributing to the know-how to the team and providing a basis for optimization for upcoming projects

O trabalho dos catadores de materiais recicláveis de Presidente Prudente, São Paulo: um estudo aplicado na COOPERLIX e na coleta seletiva municipal

This work focuses on analyzing the organization of the Workers Cooperative Recyclable Products of Presidente Prudente (COOPERLIX) and selective collection of municipal service. Aiming to analyze the issue of solid waste and the work of collectors of recyclable materials in an organized Economic Development Outreach (ESS). Throughout the work was carried out theoretical approaches on the issue of solid waste, the precarious work of scavengers, some laws, among others, were conducted several field studies over the years 2011 and 2012 in COOPERLIX, with the realization meetings and debates on various subjects; tools were also used Geographic Information Systems mainly in the production of selective collection of municipal map, now at 100% of the urban area of Presidente Prudente. Finally, we carried out a comprehensive analysis of the situation of the productive and financial COOPERLIX during those two years, checking their capability and weaknesses

Efeitos dos parâmetros de usinagem no acabamento superficial de materiais cerâmicos a verde

Pós-graduação em Engenharia Mecânica - FEB

Contributos da Ciência do Sistema Terra para a Educação Científica - Construção de Materiais e Práticas Interdisciplinares

O Ensino de Ciência do Sistema Terra constitui o eixo articulador de um programa, que integra ações educacionais e de investigação, tendo por objetivo central o desenvolvimento e aplicação de propostas educacionais que incorporam princípios da complexidade. O programa articula as ações educacionais no âmbito de uma investigação-ação. As ações são realizadas em contextos de educação formal e envolvem comunidades escolares da rede pública do município de São José do Rio Preto (SP, Brasil). Os trabalhos e as ações consideram as diretrizes curriculares e as políticas educativas vigentes e seus resultados revelam-se na construção de materiais e práticas polidisciplinares, que exploram as conexões existentes entre as diferentes áreas do conhecimento para ensinar os conteúdos curriculares, em prol de uma educação científica mais efetiva e pertinente. Os resultados, até então obtidos, revelam alguns contributos das ações educacionais e de investigação do programa que, ao potenciar e incentivar o trabalho colaborativo, o diálogo multidisciplinar e a reflexão crítica, favorecem o desenvolvimento de uma percepção mais acurada do significado e alcance da educação científica para a formação do indivíduo e das sociedades.

Dimensionamento de estoques de materiais elétricos em centros de distribuição

Due to the high level of service required by customers and the constant need to reduce costs, the logistics can be considered as a strategic area for a company. In particular, the order picking is responsible for most of the operating costs in a warehouse. Therefore it’s necessary to plan the materials storage in order to maximize the space available and minimize the total distance traveled to meet customer orders. For these reasons, this study aims to examine and propose a way to organize the electrical materials storage in distribution centers through a study on an electronics company in Cajamar

Analise de desgaste em materiais aplicados em discos de freio

Baja SAE competitions challenge engineering students to design and build offroad vehicles, preparing them for the competitive job market. This monograph aims to study a part of the braking of a Baja SAE vehicle system, the brake disc. Giving attention to the wear suffered by discs of two different materials, steel 1045 and stainless steel 304, helping the team Piratas do Vale Bardahl in the best selection between them. Braking tests were performed on a test bench. Both discs have suffered the same braking conditions. Brake pads material, brake line pressure, braking time, number of braking, were parameters which were repeated in the testing of different types of disk, in order to ensure a high power comparison between the obtained data. Before and after the disk tests were weighed and measured, to make a comparison. After the brake tests, the disks were subjected to hardness and surface roughness testing. With the data collected and observations made in the worn parts, the comparison between these two materials was made, obtaining a selection of the best material for the team. The tests showed that steel 1045 has more advantages, compared to stainless steel 304, when applied to brake discs, on the tested conditions

Variabilidade entre materiais genéticos de eucalyptus spp quanto à distribuição de raízes finas em latossolos profundos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Uma análise do grau comparativo nos materiais didáticos de língua inglesa via teoria das operações predicativas e enunciativas

Pós-graduação em Linguística e Língua Portuguesa - FCLAR

Construção de um sistema de gestão de materiais - MRP - Integrado ao Jogo de Empresas Mercado Virtual

Pós-graduação em Engenharia de Produção - FEB

Gestão de resíduos sólidos urbanos: contribuições socioambientais de duas cooperativas de catadores de materiais recicláveis na região do Médio Paranapanema

Pós-graduação em Biociências - FCLAS