Tensile Strength
Mostrando 25-36 de 846 artigos, teses e dissertações.
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25. Caracterização Mecânica e Análise Microestrutural de Chapas Obtidas pelo Processo de Tailor Welded Blank (TWB)
Resumo Um dos maiores desafios da indústria automobilística, a nível global, trata-se de desenvolver veículos que sejam, simultaneamente, leves e resistentes mecanicamente. O Tailor Welded Blank (TWB) surge como solução, pois é um processo que permite a soldagem de topo de chapas de diferentes especificações (material, espessura e/ou revestimento),
Soldag. insp.. Publicado em: 14/11/2019
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26. Assessment of concrete anisotropy by means of compression and indirect tensile tests
Resumo Na análise e projeto estrutural de concreto armado, normalmente se assume que o material é isotrópico e homogêneo. As caraterísticas pontuais das estrutura, geralmente exercem pouca influência no comportamento das mesmas, portanto normalmente são desconsideradas. No entanto, existem muitas evidencias de que, na mesoescala, o concreto convencion
Rev. IBRACON Estrut. Mater.. Publicado em: 11/11/2019
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27. Preparation of Syntactic Foams made from Green Polyethylene and Glass Microspheres: Morphological and Mechanical Characterization
Polymeric syntactic foams are composites made from the mixture of Hollow Glass Microspheres (HGM) and polymer matrices. One of their main characteristics is their low density and the production of these composites using a matrix derived from renewable sources potentiates their development without neglecting sustainability. In this paper , the properties of H
Mat. Res.. Publicado em: 11/11/2019
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28. Bionanocomposites of PLA/PBAT/organophilic clay: preparation and characterization
Abstract The objective of this study was to develop bionanocomposites from blends of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) and from 3% and 6% bentonite clay. Initially, the bentonite clay was treated with Praepagen salt, and the properties of the modified clay were evaluated. After the organophilization of the clay was co
Polímeros. Publicado em: 04/11/2019
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29. Effect of grape seed extract-containing phosphoric acid formulations on bonding to enamel and dentin
Abstract The aim was to evaluate the effect of 2% grape seed extract (GSE) containing phosphoric acid (PhA) on the bond strength to enamel and dentin. The control group was 37% PhA. The following three PhA formulations with 2% GSE and 20% ethanol were obtained: GSE5 = 5% PhA; GSE10 = 10% PhA; and GSE20 = 20% PhA. The enamel and dentin surfaces of molars were
Braz. oral res.. Publicado em: 28/10/2019
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30. Estudo comparativo entre agentes reticulantes para possível aplicação no tratamento do ceratocone
RESUMO Com o presente estudo, objetivou-se comparar a técnica padrão do CXL com o tratamento utilizando a genipina como reticulante, com e sem desepitelização da córnea. Comparou-se propriedades químicas, mecânicas e morfológicas de córneas de suínos submetidas aos tratamentos de crosslinking com riboflavina egenipina, bem como comparar a citotoxic
Matéria (Rio J.). Publicado em: 28/10/2019
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31. Influence of Composition on Mechanical Properties of Cassava Starch, Sisal Fiber and Carnauba Wax Biocomposites
Concern for sustainable development has provided significant improvements in the development of biodegradable materials. This work aims to evaluate, through a central composite design (CCD), the mechanical properties of cassava starch-based biocomposites manufactured with different compositions of carnauba wax (CW), sisal fiber (SF) and glycerol (G). The bio
Mat. Res.. Publicado em: 24/10/2019
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32. Aplicação da Metodologia para Qualificação de Procedimentos de Soldagem de Tubulações Industriais Conforme Parâmetros dos Códigos ASME B31.3 e ASME SECTION IX*
Resumo Este trabalho foi desenvolvido visando auxiliar os profissionais de soldagem quanto as incertezas relacionadas às atividades de fabricação, montagem e manutenção de tubulações em plantas industriais no qual se refere à maneira adequada para a condução de atividades de qualificação de procedimentos de soldagem. Discorre sobre a metodologia
Soldag. insp.. Publicado em: 21/10/2019
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33. Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites
Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of m
Mat. Res.. Publicado em: 17/10/2019
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34. Determination of Drilling Rate Index Based on Rock Strength Using Regression Analysis
Abstract: Drillability is influenced by many factors, including machine parameters and rock properties. The main machine parameters for drilling include rotational speed, thrust force, torque and flush pressure. The specific rock characteristics that affect penetration rate comprise uniaxial compressive strength (UCS), tensile strength, Young’s modulus, ha
An. Acad. Bras. Ciênc.. Publicado em: 14/10/2019
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35. Crosslinking starch/oat hull mixtures for use in composites with PLA
Abstract Modification of composite components has been proposed as a tool to improve their functional properties. The present work studied crosslinking of a starch/oat hull mixture by reactive extrusion with sodium trimetaphosphate (STMP), for application in composites with polylactic acid (PLA). The treated mixture was characterized regarding degree of subs
Polímeros. Publicado em: 10/10/2019
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36. Phase Separation and Development of the Microstructure for Stainless Steel to Copper Alloy Weld Joints Using a Fiber Laser
ABSTRACT Stainless steel and copper alloys joints are often applied in aerospace, marine and power industries where both high thermal and electrical conductivity (Cu) and corrosion resistance (steel) are required. In the aerospace industry, in particular for the combustion chamber of rocket engines, copper and steel combinations offer perfect materials selec
J. Aerosp. Technol. Manag.. Publicado em: 10/10/2019