In Service Welding
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Uma nova abordagem para a medição da diluição de soldagem, baseada nos pontos de inflexão de um Contorno Ativo
RESUMO Em diversas aplicações, com ênfase nos processos de soldagem dissimilar, a diluição, em conjunto com outros fatores, pode afetar as propriedades mecânicas dos materiais soldados, sendo assim, capaz de gerar falhas durante as condições normais de serviço. Deste modo, a taxa de diluição geralmente é calculada a partir da análise de imagens
Matéria (Rio J.). Publicado em: 20/05/2019
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2. Effects of Aging at 450°C on the Pitting Corrosion Resistance and Toughness of AISI 317L Steel Welded by GTAW and FSW
Austenitic stainless steels are high corrosion resistant alloys widely used in many industrial fields. Among this family of steels, AISI 317L stands out due to its higher localized corrosion resistance when compared to the traditional grades AISI 304L and AISI 316L. In some applications in oil refineries, the AISI 317L is being specified for services at mode
Mat. Res.. Publicado em: 17/11/2017
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3. Development and Test of an Equipment to Measure Residual Strain Inside Pipes Using the Hole-Drilling Method
Abstract Residual stresses are present in materials or structural component in the absence of external loads or changes in temperatures. The most common causes of residual stresses being present are the manufacturing or assembling processes. All manufacturing processes, such as casting, welding, machining, moulding, heat treatment, etc, introduces residual s
Lat. Am. j. solids struct.. Publicado em: 2016-12
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4. Guide for Recommended Practices to Perform Crack Tip Opening Displacement Tests in High Strength Low Alloy Steels
Abstract: Fracture mechanics approach is important for all mechanical and civil projects that might involve cracks in metallic materials, and especially for those using welding as a structural joining process. This methodology can enhance not only the design but also the service life of the structures being constructed. This paper includes detailed considera
Soldag. insp.. Publicado em: 2016-09
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5. Tensiones residuales en uniones soldadas por FSW en aluminio 7075-T651
Residual stresses could be a relevant issue in the structural integrity of a component in service and usually have a major influence on their fatigue life, among other failure mechanisms. In recent years Friction-Stir Welding (FSW) has revolutionized the welding technology. Its main application has been given in aluminum alloys, but nowadays can be applicabl
Soldag. insp.. Publicado em: 2012-12
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6. Aplicação da técnica da dupla camada na soldagem de dutos em operação
A intervenção por soldagem em dutos em operação adquiriu nos últimos anos extrema importância na indústria do petróleo, visto que por meio dela é possível instalar derivações bem como reparar trechos danificados na malha dutoviária sem a interrupção do fluxo dos produtos escoados, o que certamente impactaria em elevados custos nas operações.
Publicado em: 2010
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7. Energía calorífica necesaria, durante la soldadura en servicio de tuberías para el transporte de petróleo
The thermal behavior during in service repair welding of oil transportation pipes was studied by finite element analysis in the present paper. Regression equations that relate peak temperature at the inner surface of the pipe and cooling time between 800 and 500ºC in the heat affected zone to the welding heat input, preheat temperature, and convection heat
Soldagem & Inspeção. Publicado em: 2009-03
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8. Numerical modeling of welded joints by the "Friction Stir Welding" process
The present work is aimed to simulate the Friction Stir Welding process as a three-dimensional thermally coupled viscoplastic flow. A Finite Element technique is employed, within the context of a general purpose FEM framework, to provide the temperature distributions and the patterns of plastic flow for the material involved in the welded joints. The computa
Materials Research. Publicado em: 2004-12