Spot Weld
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Effects of Geometrical Feature on Microstructures and Mechanical Properties of Refill Friction Stir Spot Welding 6061 Aluminum Alloy
Refill friction stir spot welding (refill FSSW) is a solid state joining technology developed and patented by Helmholtz-Zentrum Geesthacht. Refill FSSW is a welding process suitable for spot joining lightweight materials in similar and dissimilar joint configuration. The result is a spot welded in lap configuration with minimal material loss and a flat surfa
Mat. Res.. Publicado em: 17/01/2020
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2. A Comparative Study of the Heat Input During Laser Welding of Aeronautical Aluminum Alloy AA6013-T4
ABSTRACT The heat input is the amount of energy supplied per unit length of the welded workpiece. In this study, the effect of two different heat inputs in laser beam welding of a high strength aluminum alloy AA6013-T4 was evaluated from macrostructural and microstructural points of view. The experiments were performed using a continuous wave 2 kW Yb-fiber l
J. Aerosp. Technol. Manag.. Publicado em: 14/06/2018
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3. Finite Element Method Based Modeling of Resistance Spot-Welded Mild Steel
Abstract This paper deals with Finite Element refined and simplified models of a mild steel spot-welded specimen, developed and validated based on quasi-static cross-tensile experimental tests. The first model was constructed with a fine discretization of the metal sheet and the spot weld was defined as a special geometric zone of the specimen. This model pr
Lat. Am. j. solids struct.. Publicado em: 2016-11
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4. Fully Automatic Spot Welding System for Application in Automotive Industry
Abstract A Virtual Machine has led to a fully automatic spot welding system. All necessary parameters are created by measuring systems and algorithms running in the Virtual Machine. A hybrid operating circuit allows the Virtual Machine to read the exact process voltage between the tips of the electrodes every 50 µs. Actual welding voltage and current allow
Soldag. insp.. Publicado em: 2015-12
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5. Soldadura de aceros dual phase en chapa fina: GMAW, PAW y RSW
Dual Phase steels (DP) have been used recently as an interesting option for structural elements, specialy in automotive industry, due to weight reduce requirements. Welding of these materials becomes particularly important considering their application as structural elements and the related manufacturing methods. In particular resistance spot welding (RSW) a
Soldagem & Inspeção. Publicado em: 2011-06
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6. A fatigue life prediction model of welded joints under combined cyclic loading. / Um modelo para previsão de vida à fadiga de juntas soldadas submetidas a carregamentos combinados.
The main purpose of this work is to develop a practical and robust methodology to evaluate the fatigue life in seam weld joints fabricated with GMAW process when subjected to combine cyclic loading. The maximum linear stress at the typical crack initiation region, better known as hot spot stress, was used to calculate the fatigue life through high cycle fati
Publicado em: 2010
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7. Avaliação da vida em fadiga de uma bancada de testes utilizada para realizar ensaios em dutos flexíveis na CADETEC/UFRGS / Fatigue assesment of a riser test machine at the CADETEC/UFRGS
Neste trabalho se realizará a avaliação da vida em fadiga da bancada de ensaios que está sendo projetada e será utilizada nos ensaios de dutos flexíveis na CADETC. Esta estrutura modular tem seção octogonal, sendo que os módulos são parafusados entre si constituídos por tubos cilíndricos soldados uns aos outros. Diversos modelos numéricos serão
Publicado em: 2010
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8. Simulações de soldagem por arco e resistência elétrica usando o método dos elementos finitos / Analysis of resistance spot weld and arc weld using finite element method
Neste trabalho foi feito um estudo sobre técnicas numéricas de simulação de soldagem. O estudo aplica o Método dos Elementos Finitos como principal ferramenta de análise para este processo. São abordados processos populares na indústria metal/mecânica como a soldagem por arco elétrico, e por resistência elétrica. Uma revisão bibliográfica conte
Publicado em: 2009
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9. Soldabilidade dos aços DUAL-PHASE 600 e 800 via processo de soldagem a pontos média freqüência corrente contínua (MFDC) e corrente alternada (AC) / Weldability of 600 and 800 Dual-Phase Steels by Using Resistance Spot Welding Medium Frequency Direct Current (MFDC) and Alternating Current (AC)
Dual-Phase steels have been developed to match the automotive-industry need of highresistance materials that lead to weight reduction and, therefore, reducing emissions. Specifically, in the use Resistance Spot Welding (RSW) process, the Medium Frequency Direct Current (MFDC) equipment has been largely introduced in the automotive industry without, however,
Publicado em: 2008
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10. Correlation study of spot welded specimensbehavior using element method. / Estudo de correlação do comportamento de pontos de solda em corpos de prova pelo método dos elementos finitos.
Resistance spot welding is the most common jointing process of parts used in automotive industry. Several methods to represent spot welds are available, and the purpose of this work is to compare two different methods of spot weld modeling through a correlation study, taking into consideration the maximum force withstood by the welded joint, between virtual
Publicado em: 2007
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11. Determinação do limite de fadiga em chapas de aço de baixo carbono para vasos de pressão com e sem solda de filete
This dissertation presents the survey of fatigue strength limit for samples with and without welding, that were constructed of low carbon steel for pressure vessels. The e samples were calculated through the Finite Element Method, where the g in each model, that represents a sample, it corresponds to the displacement fatigue test machine and measured through
Publicado em: 2006
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12. Influência da taxa de deformação na falha de uniões por solda a ponto. / Strain rate influence in the spot welding joints failure.
Este estudo apresenta uma tentativa para investigação do efeito que a sensibilidade à taxa de deformação do material poderia provocar no modo de falha do ponto de solda. É sabido que alguns materiais quando deformados dinamicamente sofrem elevação na sua resistência mecânica, e portanto este aumento poderia afetar o comportamento, ou seja, o modo d
Publicado em: 2005