Avaliação de juntas soldadas em tubos de aço carbono submetidos a altas temperatura e pressões

The welding process in industrial piping is still the most effective way to ensure the durability and quality of the wide range of industrial process, although because of the high demand for energy and quality of the produced products, the piping has been constantly tested for high pressure applications and still high temperature. The welding method analyzed is the TIG (Tungsten Inert Gas) welding or GTAW (Gas-Shielded Tungsten Arc Welding), which ones have as principal feature the utilization of a not consumable tungsten electrode in the torch extremity , in this process is necessary a protective atmosphere of inert gas. The welding TIG advantage is the obtaining of a welded seam clean and with quality for not has slag after the welding. This work has as objective show the variability in the carbon steel piping welding parameters and by the tests in four proof bodies will be shown the influence of the variation of the welding methods in a welded seam. The tests will vary since the piece to be welded preparation, till penetrating liquid tests, welding macrography, welding x-ray and traction tests. Even been a clean and with quality welding is necessary a final inspection in the seam welded looking for defects almost inevitable resulted of the welded process, the obtained results have the objective of indicate and minimize the defects to ensure quality and durability of the welded seam

Caracterização hidroquímica do sistema aquífero Tubarão no município de Americana/SP

The growing interest in the use of groundwater resources is directly related to the economic advantages that the groundwater exploitation offers when compared to surface waters. This happens especially in large urban centers, such as the city of Americana / SP, where the rivers are increasingly contaminated by household and industrial waste. Therefore, this study aimed to characterize the Tubarão Aquifer System, in the city of Americana, to identify and evaluate the spatial distribution of different hydrogeochemical facies as well as understand the rock-fluid interaction through the construction of a conceptual hydrogeochemical model. This study was made based on the recognition of the possible chemical reactions that print the chemical characteristics of groundwater in the area. To do the job, there were two water sampling campaigns of all deep wells used by the City of Americana public water supply. From the results of hydrochemical, classification of water was made by Piper and Stiff diagrams as well as geostatistical data using cluster analysis of principal components. Based on information from the profiles obtained from the survey SIAGAS as well as in geological profiles provided by the city of Americana, we sought to detail the subsurface geology of the Subgroup Itararé in the city of Americana. The results obtained allowed the identification of three hydrochemical types in the study area: Bicarbonated calcium-sodium (1), bicarbonate sodium (2) and sodium chloride (3). The waters have bicarbonate alkaline pH to alkaline and can be considered weakly saline, with electrical conductivity values of around 161 mS / cm. Samples classified as sodium bicarbonate average of 174.99 mS / cm. The pH values ranging from 6.74 to 7.99, averaging 7.52. For the group of waters classified as sodium chloride, conductivity average is 164.32 mS / cm and pH values ranging... (Complete abstract click electronic access below)

Caracterização dos reservatórios do grupo Macaé no Campo de Garoupa - Bacia de Campos - por meio de interpretação sísmica e perfis de poço

The study area is the Garoupa Field, located 75 km from the coast of Rio de Janeiro in bathymetric elevation of 125 m and it is the first important offshore discovery of the Campos Basin with hydrocarbon production in the Albian carbonates. The high significance of carbonate rock reservoirs for the global oil industry and its degree of complexity, combined with the fact that the Garoupa Field is a mature field, make this research project interesting to develop a re-exploratory vision of the study area. The objective of this paper is to characterize the physical properties of the Macae Group reservoirs in the Garoupa Field through well correlation techniques, petrophysical analysis and seismic interpretation (3D), in order to evaluate qualitatively and quantitatively the response of geophysical data to the presence of carbonate rock reservoirs. From the analysis of well profiles (gamma ray, resistivity, density and sonic) it was possible to identify six reservoir levels in the Quissamã Formation. As a result, the reservoirs have good correlation between the wells in the Garoupa Field and show lateral facies variation. In the seismic interpretation, structural contour maps were generated in time (ms) from the top of the Macae Group and two horizons that correspond to the reservoir levels. These maps show that the oil producing area of this field is a structural high located at the west of the interpreted seismic cube, and it was classified as a rollover limited by lateral faults forming a horst. The seismic attribute maps show a good response to the reservoirs of the Garoupa Field because they are associated with amplitude anomalies, verified by the correlation between the physical properties of the reservoir rock and seismic data through cross plots, with emphasis in a linear correlation between the resistivity profile and the values of Maximum Absolute Amplitude and RMS Amplitude attributes

Analise mecânica e microestrutural em estruturas tubulares aeronáuticas soldadas de aço ABNT 4130

Airplane Motor Cradles have a complex geometry, since they require different conbinations between different tubes and TIG welded in several angles. In T-25 aircraft and Universal T-27 Tucano (EMBRAER / FAB), besides having to bear the engine balance, these components maintain fixed the nose landing gear in another extremity. They are considered critical to flight safety, and for this reason, the aviation standards are extremely rigid in their production, imposing a zero index” of defects on the final weld metal quality. These structures may be containing an historical of welding repairs, whose effects on their structural integrity are not computed. In this work we analyzed the standardised AISI 4130 steel and the raw steel of tubes to the Airplane Motor Cradles. First of all, microscopy and microanalysis of the base steel, then we analyzed the effects of the TIG weld. Tensile testing was conducted to measure the difference between the mechanical properties of standardised steel and without this treatment

Cachaça tradicional e bidestilada: aceitação e perfis sensoriais

O mercado da cachaça, bebida tipicamente brasileira, vem crescendo muito no Brasil e no mundo. Porém, apesar do grande volume de produção, nosso país ainda exporta uma quantidade muito pequena do produto, cerca de 1%. Visando atingir o mercado internacional, e também atender às crescentes exigências do mercado interno, é ainda necessária uma melhor padronização dessa bebida, além da obtenção de um produto com boas características físico-químicas e sensoriais. O principal objetivo deste trabalho foi realizar estudos, visando avaliar o efeito do processo de bidestilação e do envelhecimento, na padronização e na qualidade sensorial, da cachaça comparando-se a aceitação de amostras de cachaça obtidas tradicionalmente, por bidestilação e também envelhecidas. Assim, foram produzidas oito amostras de cachaça, por destilação simples e utilizando-se o processo de bidestilação, em alambiques de cobre, a partir do mesmo vinho de cana, e então envelhecidas em tonéis de carvalho durante seis meses. As referidas amostras foram submetidas a testes de aceitação sensorial utilizando-se sessenta provadores e os resultados obtidos, mostraram que a bidestilação produz uma aguardente mais padronizada e ainda que sua aceitação, aumenta de forma mais acentuada durante o processo de envelhecimento

Alterações glomérulo-tubulares em cadelas com carcinoma mamário

Pós-graduação em Medicina Veterinária - FCAV

Vinhos tintos do Noroeste Paulista: relação entre os perfis físico-químico e sensorial.

Brazilian red wines are very appreciated by consumers from tropical regions, because they typically have aromatic and fruity taste. Thus, the aim of this article is to verify the quality of red wines from wineries located in Northwest region of São Paulo, based on the relationship between physicochemical properties and sensory attributes. Three red wines from this region was evaluated by sensory and analytical methods and it was possible to observe significant differences in the fixed acidity, alcoholic content, total phenolic content and total dry extract. Multidimensional Scaling showed relationship between total phenolic content and astringency, total dry extract and body and the relationship of volatile acidity in the assessment of odor samples. It was possible to see the physicochemical influence in sensory evaluation, indicating the importance of the chemical profile in the elucidation of possible sensory alterations in red wines.

Avaliação da influência do formato da porca e da pré-carga em juntas aparafusadas em tração

Many structures and mechanical equipment requires a union member, and the screw is one of the most used, the cost is low, it is versatile and easy to find on the market. The resulting pre-load assembly torque associated with the cyclical external load has great influence, so it will be studied carefully. This study analyzed some of these factors, as the format of nuts, and the washer material when they are incompatible with the bolt material can cause a reduction in life of the joint fatigue

Estudo de tensões residuais em juntas soldadas utilizando o método dos elementos finitos

Pós-graduação em Engenharia Mecânica - FEG

O paradigmático caso do processo às juntas militares argentinas

This article analyzes the case of the proceedings against Argentina’s Military Juntas that led to jail those responsible for heinous crimes committed during the military dictatorship. The said proceeding has a high symbolic value in the struggle for human rights in Latin America and is relevant and timely in Brazil where the right to the truth regarding the missing people during the military dictatorship is in debate, as well as the invalidation of the Amnesty Act regarding the common crimes of torture, rape and / or kidnapping, among others. In the case of Argentina, following Roxin’s doctrine of mediate authorship, the Court held that the crimes were committed by the military through the use of an organized power apparatus and emphatically dismissed allegations that such crimes were justified in the so-called “dirty war”. Thus, the case against the Military Juntas has become a paradigmatic one, not only in Argentina, where many military leaders had to respond to criminal actions, but for all countries in the region that faced similar situations in recent history.

Perfis de Orfeu na poesia brasileira recente

Muitos são os atributos que perfazem o ciclo mítico de Orfeu, o mais importante dos poetas lendários da Grécia antiga: ele, além de amante devotado (pois desceu ao Hades em busca da amada Eurídice) e protótipo de poeta lírico (em termos ideais platônicos), teria sido o fundador do culto de mistérios que leva seu nome, o Orfismo. Tema recorrente na literatura e nas artes ocidentais, sobretudo a partir das obras dos latinos Ovídio e Virgílio, o mito de Orfeu, em seus aspectos mítico-poéticos, vinca a poesia brasileira desde a Colônia e atinge inusitada voga a partir dos anos 40/50 do século XX, quando pode encharcar-se de certos aspectos místico-religiosas (Murilo Mendes; Dora Ferreira da Silva). Na contemporaneidade, os perfis de Orfeu continuam seu périplo pela poesia brasileira, em obras recentes de Adriano Espínola (Praia provisória, 2006), Geraldo Carneiro (Balada do impostor, 2006) ou Rodrigo Petronio (Venho de um país selvagem, 2009). A partir de tais obras tentar-se-á dar um corpo (embora metamórfico) ao contraditório Orfeu.

A problemática trazida pelos bancos de perfis genéticos criminais no Brasil

Pós-graduação em Direito - FCHS

Formação acadêmica inicial em educação física: perfis profissionais, objetivos e fluxos curriculares de uma instituição privada de ensino superior do interior do Estado de São Paulo

The present study represents a qualitative thesis, characterized as a case study, which uses the method of the present approach. In addressing the academic home in physical education, there is the constancy of the discussions regarding the curriculum and professional formatting. In view of the curriculum modifications to fit the new legislation, and the fact they are few studies related to private institutions that offer such courses, which offer even greater number of courses when compared to public institutions aimed to investigate and analyze the professional profiles, curricular goals and flows contained in the pedagogical projects of courses bachelor degree in physical education and a private institution of higher education of the State of São Paulo, as well as verifying the existence and adequacy of articulation to the institutional educational project and the institutional development plan. Compounding the literature review discussed the key historical facts relating to courses in physical education in our country, and its path to the current model. Also presented was the law of physical education courses in force in Brazil and some concepts about teaching course projects and their relationship to other institutional documents. Techniques were used to review and document analysis, with primary source documents of their own and other government institution. It found a lack of interest of some private institutions of higher education in official documents available for this type of research, which is bad since there are more courses offered by them compared to public institutions. As for the degree course for training teachers of physical education, found lack of specificity regarding the differentiation between content and the bachelor, which ends up deviating from the expectations contained in the course to the one presented in the curriculum. Thus, it becomes a need for greater collaboration of private institutions of higher education...

Caracterização de juntas soldadas em PAW e GTAW de chapas finas em aço maraging 300 submetidas a vários reparos

Pós-graduação em Engenharia Mecânica - FEG

Caracterização mecânica e microestrutural de juntas soldadas a laser em aços maraging com posterior tratamento térmico e termoquímico de superfície a plasma

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)