Double Wire
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Atomization Characteristics of Droplet and Morphologies of Arc Sprayed Ni-Al Particles and Composition Coatings
Droplet atomization characteristics and its morphology in twin-wire arc sprayed (TWAS) Ni-Al were explored in depth. Both numerical model and theoretical method were built for calculating the process of the droplet deformation and breakup in air flow, which based on the standard k-ε model and the volume of fluid (VOF) dual-phase flow model. The atomization
Mat. Res.. Publicado em: 23/09/2019
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2. New concept of tunnel boring machine: high performance using water jet and diamond wire as rock cutting technology
Abstract Tunnel boring machines are important tools in underground infrastructure projects. Although being well established equipment, these machinesare based on designsof more than 60 years ago and are characterized by big dimensions, enormous weight and high power consumption. Commercial aspects should be noted too. The model adopted by the TBM industry re
REM, Int. Eng. J.. Publicado em: 2018-03
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3. Modeling of the temperature field generated by the deposition of weld bead on a steel butt joint by FEM techniques and thermographic images.
The aim of this work is to predict the temperature field generated by welding a steel butt joint (API 5L X80). The prediction was modeled by finite element software Abaqus where the subroutine was developed in Fortran so that heat source motion may be included. The motion was based on the Goldak's double ellipsoid. In the model material nonlinearities were i
Mat. Res.. Publicado em: 23/02/2018
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4. Prototypes and modulation functions of classical and novel configurations of optical chopper wheels
Optical choppers with rotating wheels are some of the most used macroscopic optomechatronic devices for the controlled modulation, attenuation or obscuration of light in a wide area of applications. We discuss and compare the modulation functions produced by two types of chopper wheels: the classical device, with windows with linear edges, and the eclipse ch
Lat. Am. j. solids struct.. Publicado em: 2013-01
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5. Fragilização por hidrogênio de parafusos cementados / Hydrogen embrittlement of carburized bolts
The main aim of this work is to investigate the effects on hydrogen embrittlement of bolts due to acid pickling, baking, and strip processes performed during zinc plating. Carburized bolts type "hexagon flange head tapping screws", with 6 mm of diameter and 16 mm of thread length were organized into 39 different groups. Acid pickling was evaluated using volu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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6. Estudo fotoelástico do controle vertical com o arco de dupla chave na técnica Straight wire
INTRODUÇÃO: em alguns casos, a extração de pré-molares torna-se necessária e nem sempre os espaços são completamente fechados após o alinhamento e nivelamento. O arco de dupla chave, ou Double Key Loop (DKL), é um arco retangular de aço para retração, com duas alças - uma mesial e outra distal ao canino. OBJETIVOS: este trabalho propôs-se a es
Revista Dental Press de Ortodontia e Ortopedia Facial. Publicado em: 2009-08
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7. A Study on out-of-phase current pulses of the double wire MIG/MAG process with insulated potentials on coating applications: part I
The part 1 of this work presents a study about the use of the out-of-phase current pulses technology applied to the Double Wire MIG/MAG welding process with Insulated Potentials on welded coating. High-speed digital back-lighted images were recorded to evaluate the influence of the levels of out-of-phase current pulses on the behavior of both metallic transf
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-06
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8. A Study on out-of-phase current pulses of the double wire MIG/MAG process with insulated potentials on coating applications: part II
This paper presents a continuation of a study carried out on the use of the out-of-phase current pulses technology applied to the Double Wire MIG/MAG welding process with Insulated Potentials on welded coatings. In the first part it was reported how the level of out-phase pulsed current acts on arc configuration, droplet paths, bead finishing and arc stabili
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-06
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9. DEMOCRACIA E POLÍTICA ECONÔMICA NO BRASIL: OS LIMITES DA POLITIZAÇÃO DAS QUESTÕES ECONÔMICAS (1985-2002)
Study about the recent Brazilian democratic period and the crooked way traversed until the economic stabilization with the Real. It has as objective to examine in what ways the specificities of the democracy and of the presidentialism has been influenced and influenced the macroeconomic management in the period understood between 1985 and 2002. The conductin
Publicado em: 2007
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10. Kondo and Fano effect in side attached double quantum-dot molecule
Electron tunneling through a double quantum dot molecule side attached to a quantum wire, in the Kondo regime, is studied. The mean-field finite-U slave-boson formalism is used to obtain the solution of the problem. We investigate the many body molecular Kondo state and its interplay with the inter-dot antiferromagnetic correlation as a function of the param
Brazilian Journal of Physics. Publicado em: 2006-09
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11. Um sistema eletroquÃmico para monitoramento de interaÃÃes das lectinas de folhas de Bauhinia monandra e de sementes de Cratylia mollis com cardoidratos em diferentes meios eletrolÃticos
BmoLL, that extracted lectin by Bauhinia monandra leaf lectin, is galactose specific and have been purified through ammonium sulphate fractionation followed by affinity chromatography. Cramoll, Craltylia mollis seeds lectin, recognizes glicose/manose and presents concanavalin A, similar properties, Con A, lectin one that it is extracted of Canavalia ensiform
Publicado em: 2006
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12. Um sistema eletroquÃmico para monitoramento de interaÃÃes das lectinas de folhas de Bauhinia monandra e de sementes de Cratylia mollis com carboidratos em diferentes meios eletrolÃticos
BmoLL, that extracted lectin by Bauhinia monandra leaf lectin, is galactose specific and have been purified through ammonium sulphate fractionation followed by affinity chromatography. Cramoll, Craltylia mollis seeds lectin, recognizes glicose/manose and presents concanavalin A, similar properties, Con A, lectin one that it is extracted of Canavalia ensiform
Publicado em: 2006