Propiedades Mecanicas
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. EFECTO DE LA ADICIÓN DE POLÍMEROS DE CADENA CORTA SOBRE LA ESTRUCTURA QUÍMICA, PROPIEDADES MECÁNICAS, TÉRMICAS Y BIOLÓGICAS DE POLIURETANOS SINTETIZADOS CON DIISOCIANATOS ALIFÁTICOS Y ACEITE DE HIGUERILLA
The objective of this research was to synthesize biocompatible polyurethanes, with suitable mechanical properties to be used as biomaterials. Polyurethanes were synthesized with polyols derived from castor oil and isophorone diisocyanate (IPDI), hexamethylene diisocyanate and 4,4’-methylenebis (cyclohexyl isocyanate), with the addition of polycaprolactone/
Quím. Nova. Publicado em: 2021-01
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2. Estimación de propiedades mecánicas de materiales metálicos por el método inverso en SPT
ABSTRACT Mechanical characterization of metallic materials by Small Punch Test (SPT) allows to evaluate uniaxial tensile properties [1]. In this work, by means of an inverse procedure and numerical simulation of SPT tests we estimate uniaxial tensile properties of AISI 304L stainless steel. We detail the applied procedure to estimate the yield stress where t
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Estimación de propiedades mecánicas de chapa de acero inoxidable 304L mediante ensayos SPT
ABSTRACT The mechanical characterization of materials by small specimen testing has growing interest in Structural Engineering. Small Punch Test (SPT) is applied to estimate mechanical properties of samples that can be extracted from components or structures without affecting service operation. In this paper the development of the test device is reported, co
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Estudio de propiedades mecánicas locales de uniones soldadas por fricción agitación (FSW) en AA6061-T6 mediante Small Punch Test (SPT)
ABSTRACT Friction Stir Welding (FSW) is a solid state process that has reach a strong technological impact in welding of aluminum alloys. Among its advantages, it may include the ability of joining materials that are difficult to weld by fusion. In welding of heat treatable aluminum alloys, some degradation in metallurgical properties is observed, so welds s
Matéria (Rio J.). Publicado em: 19/07/2018
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5. Análisis comparativo de las propiedades mecánicas de un material compuesto reforzado con fibras de carbono y las de su matriz polimérica de resina epóxica
ABSTRACT In recent years composite materials have been developed for different applications in engineering areas. This paper first presents the tensile properties of a polymer, in this case an epoxy resin, to be used as the matrix of a fiber reinforced composite material. A study of the mechanical properties is presented, which was carried out by performing
Matéria (Rio J.). Publicado em: 19/07/2018
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6. Obtención de aceros de baja aleación con diferentes contenidos de Ni y similares microestructuras y propiedades mecánicas
ABSTRACT Low alloy steels are used in many applications in the oil and gas industry. The addition of Ni in these steels improves their low temperature fracture toughness and hardenability, with a low penalty on weldability. However, ISO 15156-2 standard restricts Ni content up to a 1 wt% limit, requiring additional and expensive tests if higher Ni steels are
Matéria (Rio J.). Publicado em: 19/07/2018
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7. Efecto de la Composición Química del Metal de Aporte y del Calor Aportado Sobre la Microestructura y las Propiedades Mecánicas de Juntas Soldadas de Aceros Inoxidables Dúplex
Abstract Duplex stainless steels are characterized by good weldability and mechanical properties; they also present a high resistance to general and localized corrosion. They are the main materials when welding pipes with high requirements in different industries, mainly oil and gas. These steels have a microstructure consisting of two phases: 50% austenite
Soldag. insp.. Publicado em: 2017-06
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8. Evaluación del Deterioro de los Electrodos al Incrementar el Número de Pulsos del Tiempo de Soldadura en Aceros IF y HSLA Galvanizados y la Afectación de las Propiedades Mecánicas en los Puntos de Soldadura
Abstract: Resistance welding points, is the most important method in the assembly industry of unibody because of its automation, which is defined as the ability of the structure to provide adequate protection to passengers against injury from a collision, mainly depends on the mechanical performance of the weld nugget. To extend the life of vehicles produced
Soldag. insp.. Publicado em: 05/01/2017
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9. Estudio de la estructura y las propiedades mecánicas en un recubrimiento de circona estabilizada con 8% en mol de itria elaborado por proyección térmica por plasma a partir de suspensiones
The study of nanostructured coatings manufactured by thermal spraying has generated a great interest in the last two decades due to their considerable improved properties especially in the physical and mechanical properties. This improvement is to reduce grain sizes of their raw materials at scales of 100-1000 times lower compared to conventional coatings (m
Matéria (Rio J.). Publicado em: 2016-03
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10. Poliuretanos obtenidos a partir de aceite de higuerilla modificado y poli-isocianatos de lisina: síntesis, propiedades mecánicas y térmicas y degradación in vitro
Biodegradable polyurethanes (PUR) were prepared from polyols derived from castor oil by transesterification of pentaerythritol-modified castor oil and lysine polyisocyanates (LDI and LTI). The polyurethanes obtained were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), and dynamic mechanical thermal analysis (DMTA).
Quím. Nova. Publicado em: 2014
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11. Performance do processo de secagem de polpa celulósica e seus efeitos nas propriedades do produto final / Perfil del proceso de secado de pulpa y sus efectos en las propiedades del producto final
No Chile, a produção de polpa celulósica é a principal atividade econômica no setor florestal. São normalmente comercializadas em formas de fardos secos ao ar (Air Dry 90%). Na avaliação de sua qualidade final está implícito o envolvimento não só das características da madeira, mas também o tipo de processo utilizado, insu-mos químicos envolvi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/07/2012
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12. Propiedades físico-mecánicas de tableros terciados construidos con especies tropicales de plantaciones para uso estructural
Concrete, steel and plastics are the materials used for construction in Costa Rica. Meanwhile, wood from plantation are being introduced in the market. The present study aims to characterize and measured some physical and mechanical properties of plywood panels manufactured with veneers of Gmelina arborea, Tectona grandis and Acacia mangium coming from fores
CERNE. Publicado em: 2012-06