A5059061834- Natural Fiber Reinforced Composites
- Mechanical Engineering and Vibrations Research
- Tribology and Wear Analysis
- Polymer Nanocomposites and Properties
- Fiber-reinforced polymer composites
- Mechanical Behavior of Composites
- Agricultural and Food Sciences
- Additive Manufacturing and 3D Printing Technologies
- Aortic aneurysm repair treatments
- Textile materials and evaluations
- Fatigue and fracture mechanics
- Academic Research in Diverse Fields
- Innovations in Concrete and Construction Materials
- Epoxy Resin Curing Processes
- Orthopaedic implants and arthroplasty
- Structural Response to Dynamic Loads
- biodegradable polymer synthesis and properties
- Date Palm Research Studies
- Hip disorders and treatments
- Non-Destructive Testing Techniques
- Powder Metallurgy Techniques and Materials
- Tree Root and Stability Studies
- Fire effects on concrete materials
- Aluminum Alloys Composites Properties
- Metal Alloys Wear and Properties
Universidade do Estado do Amazonas
2009-2025
Instituto de Investigaciones en Ciencias de la Salud
2024
Universidade Federal do Amazonas
2021-2024
University of Concepción
2023
Pontificia Universidad Católica de Valparaíso
2023
Laboratoire des Matériaux Avancés
2021-2022
Instituto Federal do Amazonas
2022
Universidade da Amazônia
2022
Abcam (United States)
2021
Escola Superior de Ciências da Saúde
2007-2021
This work aims to optimize the physicochemical and tensile properties of vascular fibers extracted from a local date palm rachis in Algeria. fiber has very specific composition architecture is different remaining obtained six possible parts tree. For this purpose, Taguchi orthogonal array design L16 was applied reduce number experiments. The were with two methods (boiling retting water) treated by NaOH various concentrations (1%, 2%, 3%, 5%) for durations (1, 4, 8, 12 h). They characterized...
Natural fibres have many advantages over synthetic ones, making them attractive for reinforcing polymer materials. This work evaluates the use of an Amazonian plant, namely Curauá (Ananas erectifolius), as a reinforcement phase biocomposites fabricated by cold pressing. been shown to be promising fibre composite materials, especially due their higher elastic modulus than other plant species. An L9 Taguchi design is used investigate effect fraction, NaOH concentration and immersion time on...
Metallic nanoparticles with virucidal properties dispersed in a polymeric matrix have gained prominence the scientific community as rapid and effective alternative that employs additive manufacturing (AM) or 3D printing method. This study aims to produce filaments for using polymer nanocomposites based on polylactic acid (PLA) copper (CuNPs) different proportions. The activity of various proportions PLA was investigated. composites were produced following mixture design (DOE) concentrations...
O objetivo do trabalho foi fazer um estudo através Ensaio de Flexão em 3 pontos painéis sanduiches utilizando faces material compósito com fibras Juta submetidas a tratamento alcalino matriz resina epóxi comparando fases feitas sem reforço fibras. Foi estudado também o comportamento diferentes materiais no núcleo estrutura Honeycomb ABS, PETG e PLA obtidos por impressora 3D, possibilitando avaliar tipo sanduíche mais viável dependendo da aplicação requerida dados comparativos ensaios...
Abstract Biobased products promote efficient industrial use of natural resources, directly contributing to circular economy principles and sustainable development. This work investigates biocomposites made from Hay Tifton 85 grass fibers (i.e., Cynodon spp.) combined with castor oil polyurethane or epoxy matrices their evaluation as core materials for novel fiber metal laminates (FMLs). A full factorial design is used identify the effects polymer type length on tensile, flexural, compression...
Abstract This work describes the flexural behavior of biocomposites composed a polyurethane matrix derived from castor oil plants and coir fibers. A statistical design is performed to identify effects fiber alkaline treatment aging on modulus strength composites. Physical tests failure analyses are carried out better assess their mechanical performance. second experiment at 100% relative humidity treated composites compare with those obtained by immersion in water. The not significantly...
A characterization of composite materials a polyester matrix reinforced with natural fibers Cuban henequen and organophilized bentonite was carried out, the experimental results which are used to formulate, implement, validate scalar damage model. The were added on weight basis 15, 20, 25% as reinforcing material, bentonite, in amounts 3, 5, 7% by weight, added. Samples containing only polymer showed best mechanical performance for fiber, increases 51% tensile strength 169% impact...
This work evaluates an epoxy composite reinforced with curauá fibres and/or organophilic clay. Epoxy polymers nano-clays are also assessed. Composites manufactured by cold pressing using in pristine and treated conditions. Three levels of the factors NaOH solution (2.5, 5 10%) immersion time (2, 4 10 hours) investigated. Nano-clays incorporated at 2.5, wt.%. The morphology crystallinity evaluated scanning electron microscopy X-ray diffraction, respectively. Tensile, three-point bending...
Sandwich panels are widely used in the naval and aerospace industries to withstand normal tensile, compressive, shear stresses associated with bending. The faces of sandwich composites usually made metals such as aluminum and, some studies composites, using a polymeric matrix, but there no literature castor oil polyurethane matrix. core panel must keep apart be rigid perpendicular them. To begin work, study was carried out on influence alkaline treatment sisal fibers increase fibers’...
Sustainable fibre reinforced polymer composites have drawn significant attention in many industrial sectors as a means for overcoming issues with end-of-life regulations and other environmental concerns. Plant based natural fibres are considered to be the most suitable reinforcement sustainable since they typically from renewable resources, cheap, biodegradable. In this study, number of plant fibres-curaua, flax, jute fibres-are used reinforce epoxy, poly(lactic acid) (PLA), polypropylene...
The aim of this work was to study the stability and morphological properties polystyrene latex containing kaolinite as a filler during process synthesis nanocomposites viaemulsion polymerization. Nanocomposites with 1, 3, 5 wt% were prepared. Latexes 1 3 stable polymerization reaction. Hydrodynamic diameters 93.68 82.11 nm found for latexes kaolinite, respectively. quantities added reaction did not influence conversion curves or number particles. X-ray diffraction (XRD) unconventional...
The application of lignocellulosic fibers as reinforcements in composite materials has found increasing use recent years, due to the attractive characteristics natural such their low cost, high specific modulus, biodegradability, abundance and with many technical qualities. Natural fiber hybrid composites are very frequently used automotive aerospace other industries. In this work, numerical experimental analysis is carried out compare curauá, jute sisal epoxy for industry. most appropriate...
Composites with natural lignocellulosic fillers are being cited as a viable and sustainable alternative to conventional materials, they combine lower costs weight. In many tropical countries, such Brazil, there is considerable amount of waste that improperly discarded, which causes pollution the environment. The Amazon region has huge deposits clay silicate materials in Negro River basin, kaolin, can be used polymeric composite materials. This work investigates new material (ETK) made epoxy...
As a part of the mission to create materials that are more environmentally friendly, we present following proposal, in which study mechanical properties composite comprising polyester resin with sisal fiber and bentonite particles was conducted. Sisal added matrix percentages ranging from 5% 45% relation weight, while remained fixed at 7% weight. The specimens were manufactured by compression molding. analyzed tensile, bending, impact, stepped creep, relaxation tests. In addition,...
The influence of the addition bentonite nanoparticles on tensile and flexural strength a thermosetting polymer matrix composite material reinforced with hemp fibers was de-terminated. All composites were manufactured 5% in mass–weight ratios 10 to 45 wt% step 5%. For mechanical characterization, tests performed: scanning electron microscopy energy-dispersive X-ray spectroscopy analyses carried out. samples containing compared fiber affected for all percentages, except 35% while resistance...
The properties of aluminum alloys can be improved by the processing conditions that cause changes in microstructure and addition alloy elements. In order to understand physical behavior mechanical alloys, it is important aware some microstructural characteristics. Some these characteristics are morphology, elements, volume size, second phase. this study, we analyzed effect annealing on laminated AA 5182 alloy, when subjected different conditions. was heated temperatures 50º C, 100º 150º 200º...