Hole Drilling Technique
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Analysis of Residual Stress by the Hole-Drilling Method and Hardness in Dissimilar Joints of Austenitic Stainless Steel AISI 316L and Inconel 718 Alloy by Autogenous GTAW Process
Stainless steel and nickel alloy have high corrosion resistance in high-temperature environments due to the high Cr content present in their chemical composition, being widely used in components of nuclear reactors, petrochemical industries, etc. Through proper processes and procedures, it becomes possible to join these alloys. However, this union can genera
Mat. Res.. Publicado em: 02/12/2019
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2. Mode I+II Fatigue Crack Growth Delay by Stop-Holes
ABSTRACT: The technique of retarding the growth of fatigue cracks by drilling holes on the crack tip is well known. Most of the research works on this subject are limited to fatigue cracks subjected to mode I loading conditions. In the present work the fatigue crack growth retardation by stop-holes of cracks under mode I+II loading is investigated. The propo
J. Aerosp. Technol. Manag.. Publicado em: 29/03/2018
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3. Medição de tensões residuais em poliestireno pelo método do furo cego / Residual stress measurement in polystyrene through the hole drilling technique
Tensões residuais em peças poliméricas são grande fonte de incertezas para o projeto de componentes industriais. São causadas principalmente durante o processo de injeção. Alguns dos problemas relacionados a esse fenômeno são a diminuição da resistência mecânica, surgimento de trincas e empenamento das peças. Muitos esforços são empregados na
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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4. Estudos de processos térmicos decorrentes da usinagem: aplicação de problemas inversos em furação / Thermal studies of cutting process. Inverse problem application in drilling
Heat generation is a common problem during any type of cutting, but particularly during a drilling due to the difficulty of conducting heat away from the cutting edge and the fact that the chips remain in contact with the tool for a relatively long time in a hole. Cutting temperatures have strongly influenced both the tool life and the metallurgical state of
Publicado em: 2009
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5. Evaluation of the gradient precision of the horizontal directional drilling technique for the installation of gravity sewers / Avaliação da precisão da declividade da técnica de perfuração direcional horizontal para instalações de redes de esgoto
The present work is focused on the horizontal directional drilling (HDD) method to install gravity sewers. The results of different techniques are described intending to meet the demands of gradient. Therefore, 4 experimental pilot bores were drilled simulating a section of those structures extending 30 m with HDPE pipelines of 125 mm external diameter. Thos
Publicado em: 2008
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6. Evaluation through the mgnetic inspection of the superficial condition of steel bearing rings DIN 100Cr6 after hard and dry turning. / Avaliação através da inspeção magnética da condição superficial de anéis de rolamento de aço DIN 100Cr6 após torneamento duro a seco.
The present work presents information for the manufacturing of ball bearings components with higher limits of resistance to fatigue, enabling a longer useful life and also the optimization of the production of the pieces, making the usual and final process of grinding unnecessary, which would result in a costs reduction. The motivations of this study are the
Publicado em: 2008
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7. Development, design and construction of a friction hydro pillar processing equipment / Desenvolvimento, projeto de construção de um equipamento de reparo de trincas por atrito
In the offshore industry, the utilization of conventional process of arc welding processes are frequently used to repair structure defects, such as cracks. These repairs are carried out under water to reduce risks of explosion. Under water welds are subjected to hydrogen embrittlement and severe porosity. An alternative is offered by the friction hydro pilla
Publicado em: 2006
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8. Development, design and construction of a friction hydro pillar processing equipment / Desenvolvimento, projeto de construÃÃo de um equipamento de reparo de trincas por atrito
In the offshore industry, the utilization of conventional process of arc welding processes are frequently used to repair structure defects, such as cracks. These repairs are carried out under water to reduce risks of explosion. Under water welds are subjected to hydrogen embrittlement and severe porosity. An alternative is offered by the friction hydro pilla
Publicado em: 2006
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9. Rock drilling using hot supersonic jet / Perfuração de rochas por jato supersônico quente
This work discusses the possibility of applying the thermal spallation technique i.e., the use of hot supersonic jets for drilling and tunneling processes, on certain rocks of interest of the oil drilling industry. This technique was successfully used on granite rocks achieving high penetration rates (1 to 10 m/hr) compared to conventional techniques. An exp
Publicado em: 2004
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10. EVALUATION OF PLASTIC EFFECTS IN RESIDUAL STRESS MEASUREMENT BY THE HOLE DRILLING TECHNIQUE / AVALIAÇÃO DOS EFEITOS DA PLASTICIDADE NA MEDIÇÃO DE TENSÕES RESIDUAIS PELA TÉCNICA DO FURO CEGO
Uma das técnicas mais aplicadas para medir tensões residuais em componentes mecânicos é a técnica do furo cego. Esta técnica é de fácil aplicação industrial e é normalizada pela ASTM E 837. Entretanto, devido à concentração de tensões gerada pelo furo, há restrições quanto à aplicação deste método quando as tensões residuais presentes
Publicado em: 2003