Hybrid epoxy composites made from treated curauá fibres and organophilic clay

Pino, Gilberto García del; Bezazi, Abderrezak; Boumediri, Haithem; Kieling, Antônio Cláudio; Silva, Cláudia Cândida; Dehaini, Jamile; Rivera, Joshua; Valenzuela, Maria das Graças da Silva; Díaz, Francisco Rolando Valenzuela; Panzera, Túlio Hallak

doi:10.1177/0021998320945785

Cited by 13 publications

(6 citation statements)

References 36 publications

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“…El Método de los Elementos Finitos (MEF) es ampliamente utilizado para simular estructuras, el contacto entre diferentes materiales, etc. y para predecir diversos parámetros importantes en diferentes ramas de la ciencia y la ingeniería como la biomecánica [4], tratamientos térmicos [5][6], materiales [7], materiales compuestos [8][9], etc. Como resultado del trabajo se obtuvo el comportamiento completo de la estructura, las curvas de variación de los desplazamientos y las tensiones, así como las ecuaciones que describen su comportamiento.…”

Section: Association Of State Highway and Transportation Officials) Denominada "Standard Specifications Forunclassified

Análise de estruturas de suporte para sinalizações viárias

Méndez¹,

Perez²,

Méndez³

et al. 2021

Lat. Americ. J. of Develop.

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El cálculo de las estructuras de soporte para señalizaciones viales se realiza mediante la norma AASHTO con la cual se realiza fundamentalmente el chequeo a Fatiga, pero con ella no se llegan a conocer las tensiones von Mises, las tensiones tangenciales ni los desplazamientos en cualquier punto de la estructura. En el presente trabajo se determinan las cargas actuantes, así como sus combinaciones más críticas para el análisis. Se realiza el cálculo analítico a través de los métodos y las normas establecidas para ello y se confecciona un modelo de elementos finitos cuya simulación numérica complementa los resultados obtenidos por las normas. The calculation of the support structures for highway signs is carried out by means of the AASHTO standard, with which the Fatigue check is fundamentally carried out, but with it the von Mises stress, the tangential stress and the displacements at any point of the structure are not known. In the present work, the acting loads are determined, as well as their most critical combinations for the analysis. The analytical calculation is performed through the methods and standards established for it and a finite element model is created whose numerical simulation complements the results obtained by the standards.

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Section: Association Of State Highway and Transportation Officials) Denominada "Standard Specifications Forunclassified

Análise de estruturas de suporte para sinalizações viárias

Méndez¹,

Perez²,

Méndez³

et al. 2021

Lat. Americ. J. of Develop.

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“…Their results demonstrated increases from 12.5 to 21.5 MPa and 85.28 to 136 MPa, implying 58% and 63% improvements in traction and bending strength properties, respectively. Other researchers, such as Garcia del Pino [20], have also obtained good results using curauá fibers and organophilic clay in composites with an epoxy resin matrix and in a polyester matrix [21]. Kieling's work used Tucuma fibers and Kaolin in an epoxy resin matrix [22].…”

Section: Introductionmentioning

confidence: 98%

Influence of Bentonite Particles on the Mechanical Properties of Polyester–Sisal Fiber Composites

Valin Rivera,

Valenzuela Reyes,

Quinteros Wachtendorff

et al. 2023

Polymers

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As a part of the mission to create materials that are more environmentally friendly, we present the following proposal, in which a study of the mechanical properties of composite materials comprising a polyester resin with sisal fiber and bentonite particles was conducted. Sisal fiber was added to a matrix in percentages ranging from 5% to 45% in relation to the polyester resin weight, while bentonite remained fixed at 7% in relation to the polyester resin weight. The specimens were manufactured by compression molding. The mechanical properties were analyzed by tensile, bending, impact, stepped creep, and relaxation tests. In addition, energy-dispersive X-ray spectroscopy and scanning electron microscopy analyses were carried out to analyze the composition and heterogeneity of the structure of the composite material. The results obtained showed that 7% of bentonite added to the matrix affects the tensile strength. Flexural strength increased by up to 21% in the specimens with a 20% addition of sisal fiber, while the elastic modulus increased by up to 43% in the case of a 20% addition of sisal fiber. The viscoelastic behavior was improved, while the relaxation stress was affected.

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“…A partir desse cenário, foi realizado um estudo dos princípios de funcionamento mecânicos dos câmbios automáticos e manuais realizando uma análise comparativa, fundamentada em suas vantagens e desvantagens, analisando aspectos: econômicos, como custo de manutenção e sua rotatividade, e mecânicos, como desempenho e tecnologia, considerando também que são importantes os aspectos relacionados com a sustentabilidade e a proteção do meio ambiente. [11][12][13][14] É importante destacar que as caixas de velocidades automotivas funcionam através de marchas, que são ordenadas por relações de transmissão. As caixas automotivas trabalham inicialmente com a multiplicação do torque e, após um certo momento, com a multiplicação da velocidade.…”

Section: Introductionunclassified