RSS 1.0Artigos - Materiais e Tecnologia - FEG
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Permeability of untreated and atmospheric plasma treated coconut fiber mats
De Oliveira, Daniel Magalhães
; De Carvalho Benini, Kelly Cristina Coelho ; Monticeli, Francisco MacIel ; Schukraft, Joél Pascal ; De Bomfim, Anne Shayene Campos ; Cioffi, Maria Odila Hilário ; Voorwald, Herman Jacobus Cornelis (Materials Research Express, 2019) [Artigo]
Composites manufactured by resin transfer molding depend on appropriate processing parameters to ensure adequate reinforcement-matrix adhesion. Permeability predicts the fluid flow resistance through reinforcement. The ... -
Erratum to “Influence of defects on photoluminescent and photocatalytic behavior of CaO/SrTiO3 heterojunctions” (Ceramics International (2019) 45(12) (15244–15251)
Coleto, Ubirajara; Amoresi, Rafael A.C. ; Pereira, Chrystopher A.M. ; Simões, Alexandre Z. ; Zaghete, Maria A. ; Monteiro Filho, Elias S. ; ; Perazolli, Leinig A. (Ceramics International, 2019) [Errata]
The publisher regrets that the first author's name appeared incorrectly in this published article. The author's name appears correctly above as Ubirajara Coleto Jr. The publisher would like to apologise for any inconvenience ... -
Mechanical properties of lithium metasilicate after short-term thermal treatments
Simba, Bruno Galvão; Ribeiro, Marcos Valério ; ; ; ; (Journal of the Mechanical Behavior of Biomedical Materials, 2019) [Artigo]
Objectives: The properties of lithium-silicate dental glass-ceramics are very sensitive to heat treatments which are conducted after CAD/CAM (Computer Aided Design/Computer Aided Machining) processing. In particular, ... -
Influence of defects on photoluminescent and photocatalytic behavior of CaO/SrTiO3 heterojunctions
Coleto Junior, Ubirajara; Amoresi, Rafael A.C. ; Pereira, Chrystopher A.M. ; Simões, Alexandre Z. ; Zaghete, Maria A. ; Monteiro Filho, Elias S. ; ; Perazolli, Leinig A. (Ceramics International, 2019) [Artigo]
CaO/SrTiO3 heterostructures were fabricated, and their photocatalytic activity for the discoloration of Rhodamine B (RhB) dye was evaluated. SrTiO3 particles were obtained via a polymer precursor method, and heterojunctions ... -
Electromagnetic characterization of recyclable polymer nanofibers based on PSU/carbonyl iron
Silveira, Daniel Cônsoli; Braga, Tiago Teixeira da Silva ; Gil, Daniel Molina ; ; ; Botelho, Edson Cocchieri (Journal of Renewable Materials, 2019) [Artigo]
This study investigated and defined the optimal processing parameters for the electrospinning of polysulfone polymer solutions with N,N-dimethylacetamide. Variation of parameters such as solute concentration, electrical ... -
Effect of machining parameters on turning of VAT32® superalloy with ceramic tool
Bonhin, Eduardo Pires; David-Müzel, Sarah ; De Souza, José Vitor Candido ; Alves, Manoel Cléber De Sampaio ; Ribeiro, Marcos Valério (Materials and Manufacturing Processes, 2019) [Artigo]
The objective of this research was to study the machining of superalloy VAT32® using alumina-based ceramic tool without cutting fluid, applying different machining parameters to evaluate the surface finish of parts, vibration ... -
Viscoelastic evaluation of epoxy nanocomposite based on carbon nanofiber obtained from electrospinning processing
de Oliveira, Juliana Bovi; ; Conejo, Luíza dos Santos ; ; Botelho, Edson Cocchieri (Polymer Bulletin, 2019) [Artigo]
In recent years, carbon nanofiber composites have attracted researchers worldwide to use in reinforcing nanofillers instead of traditional methods due mainly to their multifunctional properties. Carbon nanofibers promote ... -
Retraction notice to:A study approach on ferroelectric domains in BaTiO3 [Mater. Charact. 120C (2016) 257–262]
Rocha, L. S.R.; Cavalcanti, C. S. ; Amoresi, R. A.C. ; ; Borsari, E. ; Zaghete, M. A. ; Simões, A. Z. (Materials Characterization, 2019) [Errata]
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Authors. The ... -
Reuse of Uncured Carbon Fiber/Epoxy Resin Prepreg Scraps: Mechanical Behavior and Environmental Response
; ; ; De Souza, Samia Danuta Brejao; Botelho, Edson Cocchieri ; ; (ACS Sustainable Chemistry and Engineering, 2019) [Artigo]
This study aims to reuse the waste of uncured composite prepreg scraps from the ply cutting manufacturing process in the aerospace industry, avoiding the resin loss, waste disposal and expenses with its incineration.Carbon ... -
Mechanical behavior simulation: NCF/epoxy composite processed by RTM
Monticeli, Francisco Maciel; ; ; Voorwald, Herman Jacobus Cornelis ; Cioffi, Maria Odila Hilário (Polymers and Polymer Composites, 2019) [Artigo]
Considering aeronautics requirements, academies and industries are developing matrixes and reinforcements with higher mechanical performance. The same occurs with the process where new studies focus on obtaining composites ... -
Hygrothermal Effect on Composites Under In-Plane Fatigue at Stress Ratios of R = −1 and R = 0.1: An Analysis of Quasi-Isotropic Stitched Carbon Fibers
Shiino, Marcos Yutaka; de Siqueira, Guilherme Silva Moraes ; Cioffi, Maria Odila Hilário ; ; (Journal of Materials Engineering and Performance, 2018) [Artigo]
The aeronautic structures normally operate under high levels of hygroscopic moisture from the surrounding environment at different temperature ranges while in service. Under such conditions, the behavior of laminate composite ... -
Lightweight structural composites with electromagnetic applications
Botelho, Edson Cocchieri; ; (Multifunctionality of Polymer Composites: Challenges and New Solutions, 2015) [Capítulo de livro]
In the aerospace field, the use of multifunctional composites has become increasingly important in combining different properties within a single component. This chapter addresses the topic of structural polymer composites ... -
Towards carbon monoxide sensors based on europium doped cerium dioxide
Ortega, P. P.; Rocha, L. S.R. ; Cortés, J. A. ; Ramirez, M. A. ; ; ; Simões, A. Z. (Applied Surface Science, 2019) [Artigo]
Ce 1-(3/4)x Eu x O 2 (x = 0.00 and x = 0.08) thick films were prepared from nanoparticles synthesized by the microwave-assisted hydrothermal route, aiming their application as a carbon monoxide sensing material to prevent ... -
Three-dimensional porosity characterization in carbon/glass fiber epoxy hybrid composites
Monticeli, Francisco Maciel; Ornaghi, Heitor Luiz ; Cornelis Voorwald, Herman Jacobus ; Cioffi, Maria Odila Hilário (Composites Part A: Applied Science and Manufacturing, 2019) [Artigo]
The main objective of this study is to analyze the effect of the stacking sequence of glass/carbon-reinforced hybrid composites on the impregnation quality and on the formation of voids. This was achieved by creating a ... -
Hybrid-permeability model evaluation through concepts of tortuosity and resistance rate: Properties of manufactured hybrid laminate
Monticeli, Francisco Maciel; da Silva Monte Vidal, Dielly Cavalcanti ; Shiino, Marcos Yutaka ; Voorwald, Herman Jacobus Cornelis ; Cioffi, Maria Odila Hilário (Polymer Engineering and Science, 2019) [Artigo]
The mechanical properties of composite structures depend on the preform impregnation and a successful impregnation can be achieved using the permeability relation in the case of an infusion process. The objective of this ... -
X-ray tomography applied to the void/defect measurement of hybrid CFRC/SiC composites
De Souza, Maria Aparecida Miranda; ; Botelho, Edson Cocchieri ; Costa, Michelle Leali (Materials Research Express, 2019) [Artigo]
Carbon fiber reinforced carbon composites (CFRC) and carbon fiber reinforced silicon carbide composites (CFRC/SiC) are materials of wide interest in the aerospace industry due mainly to their outstanding thermo-mechanical ... -
Obtainment and characterization of nanocellulose from an unwoven industrial textile cotton waste: Effect of acid hydrolysis conditions
Maciel, Maísa Milanez Ávila Dias; Benini, Kelly Cristina Coelho de Carvalho ; Voorwald, Herman Jacobus Cornelis ; Cioffi, Maria Odila Hilário (International Journal of Biological Macromolecules, 2019) [Artigo]
Cellulose nanocrystals (CNCs) have a promising application in many advanced products, such as biomedical applications and hydrogels. In this research, industrial cotton waste was treated using alkali and bleaching to ... -
Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non-isothermal crystallization kinetic and structural parameters
Benini, Kelly C.C.C.; ; ; ; ; ; Voorwald, Herman J.C. ; Cioffi, Maria O.H. (Polymer Composites, 2019) [Artigo]
This study presents the non-isothermal behavior of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) biodegradable films with 1–5 wt% of cellulose nanoparticles (CNs) manufactured by solution casting using N,N-dimethylformide ... -
Effect of different degradation types on properties of plastic waste obtained from espresso coffee capsules
de Bomfim, Anne Shayene Campos; Maciel, Maísa Milanez Ávila Dias ; Voorwald, Herman Jacobus Cornelis ; Benini, Kelly Cristina Coelho de Carvalho ; de Oliveira, Daniel Magalhães ; Cioffi, Maria Odila Hilário (Waste Management, 2019) [Artigo]
In terms of large use of plastic products, a necessity exists to minimize effects of the waste produced on environment by recycling, reuse and application in new products. In Brazil, the espresso coffee capsules are an ... -
Fractographic evaluation of welded joints of PPS/glass fiber thermoplastic composites
; Brejdo de Souza, Samia Danuta; Botelho, Edson Cocchieri ; ; (Engineering Failure Analysis, 2019) [Artigo]
Joints obtained by resistance welding of polyphenylene sulphide (PPS) laminates reinforced with bidirectional glass fiber (GF) fabrics were investigated by fractographic analyses. The welded joints were tested under lap ...