Search Results - "Hein, Luís Rogério de Oliveira"

Analysis of Plasma Electrolytic Oxidation Process Parameters for Optimizing Adhesion in Aluminum–Composite Hybrid Structures by Lucas, Rafael Resende, Silva, Emanuelle Roza Rodrigues, Marques, Luís Felipe Barbosa, da Silva, Francisco José Gomes, Abrahão, Ana Beatriz Ramos Moreira, Vieira, Miguel de Omena Lucas, Hein, Luís Rogério de Oliveira, Botelho, Edson Cocchieri, Mota, Rogério Pinto, Sales-Contini, Rita de Cássia Mendonça

“…The Plasma Electrolytic Oxidation (PEO) process was investigated to enhance the adhesion of AA2024-O aluminum alloy with a polyetherimide (PEI) matrix…”
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Study of a Conical Plasma Jet with a Cloth-Covered Nozzle for Polymer Treatment by Kodaira, Felipe Vicente de Paula, Almeida, Ana Carla de Paula Leite, Tavares, Thayna Fernandes, Quade, Antje, Hein, Luis Rogério de Oliveira, Kostov, Konstantin Georgiev

“…Although atmospheric pressure plasma jets (APPJs) have been widely employed for materials modification, they have some drawbacks, such as the small treatment…”
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Surface Modification of Polycarbonate by Atmospheric-Pressure Plasma Jets by Mello, C. B., Kostov, K. G., Machida, M., de Oliveira Hein, L. R., de Campos, K. A.

“…Plasmas have been frequently employed to modify material surface properties; however, many of these processes are not suitable for treating sensitive materials…”
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Uniform surface modification of polyethylene terephthalate (PET) by atmospheric pressure plasma jet with a horn-like nozzle by Mui, Taiana She Mir, Mota, Rogério Pinto, Quade, Antje, Hein, Luis Rogério de Oliveira, Kostov, Konstantin Georgiev

“…This work reports on surface modification of polyethylene terephthalate (PET) polymer by an atmospheric pressure plasma jet (APPJ) operated with argon. A…”
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Instrumented open-source filament extruder for research and education by de Oliveira Filho, Maurício, de Jesus, Matheus Cerqueira, Nakazato, Anderson Zenken, Kondo, Marcel Yuzo, de Oliveira Hein, Luis Rogerio

“…[Display omitted] Extruders are necessary equipment for 3D filament manufacturing, which is considered a clean technology because it has less scrap and can…”
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Helium Cold Atmospheric Plasma Causes Morphological and Biochemical Alterations in Candida albicans Cells by Rovetta-Nogueira, Sabrina de Moura, Borges, Aline Chiodi, Oliveira Filho, Maurício de, Nishime, Thalita Mayumi Castaldelli, Hein, Luis Rogerio de Oliveira, Kostov, Konstantin Georgiev, Koga-Ito, Cristiane Yumi

“…(1) Background: Previous studies reported the promising inhibitory effect of cold atmospheric plasma (CAP) on . However, the exact mechanisms of CAP's action…”
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Experimental Design of the Adhesion between a PEI/Glass Fiber Composite and the AA1100 Aluminum Alloy with Oxide Coating Produced via Plasma Electrolytic Oxidation (PEO) by Lucas, Rafael Resende, Marques, Luis Felipe Barbosa, Hein, Luis Rogerio de Oliveira, Botelho, Edson Cocchieri, Mota, Rogério Pinto

“…In this study, the AA1100 aluminum alloy underwent the plasma electrolytic oxidation (PEO) process to enhance its adhesion to a thermoplastic composite of…”
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Simultaneous Treatment of Both Sides of the Polymer with a Conical-Shaped Atmospheric Pressure Plasma Jet by Kodaira, Felipe Vicente de Paula, Leal, Bruno Henrique Silva, Tavares, Thayna Fernandes, Quade, Antje, Hein, Luis Rogerio de Oliveira, Chiappim, William, Kostov, Konstantin Georgiev

“…A conical-shaped atmospheric pressure plasma jet (CS-APPJ) was developed to overcome a standard limitation of APPJs, which is their small treatment area. The…”
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Sediment Barriers’ Performance in the Laboratory: Evaluation of Clogging and Filtration Characteristics in Geotextiles Subjected to Discharge Cycles by Adachi, Vitor Yudi Góes, Rodríguez, Joan Steven Flores, Motta, Mariana Ferreira Benessiuti, Pedroso, Gabriel Orquizas Mattielo, Hein, Luis Rogerio de Oliveira, Félix, Emerson Felipe

“…This research aims to assess the clogging process of geotextiles within silt fences. For that purpose, the filtering efficiency, flow rate, and clogging of…”
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Production and characterization of carbon/carbon composites from thermoplastic matrices by dos Santos Conejo, Luiza, de Meneses Neto, Hermes Rocha, de Oliveira, Juliana Bovi, de Paula Santos, Luis Felipe, Nakazato, Roberto Zenhei, de Oliveira Hein, Luis Rogerio, Kok, Winand, Botelho, Edson Cocchieri

“…Carbon-carbon composites (C/C) are those that have carbonaceous matrix reinforced with carbon fiber. They are widely used in the aerospace field, due mainly to…”
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Correlative light-electron fractography for fatigue striations characterization in metallic alloys by Hein, Luis Rogerio de Oliveira, de Oliveira, José Alberto, de Campos, Kamila Amato

“…ABSTRACT The correlative light‐electron fractography technique combines correlative microscopy concepts to the extended depth‐from‐focus reconstruction method,…”
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Extended depth from focus reconstruction using NIH ImageJ plugins: Quality and resolution of elevation maps by De Oliveira Hein, Luis Rogerio, De Oliveira, José Alberto, De Campos, Kamila Amato, De Oliveira Caltabiano, Pietro Carelli Reis

“…In this work, NIH ImageJ plugins for extended depth‐from‐focus reconstructions (EDFR) based on spatial domain operations were compared and tested for usage…”
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3-D reconstruction by extended depth-of-field in failure analysis – Case study II: Fractal analysis of interlaminar fracture in carbon/epoxy composites by Campos, Kamila Amato de, Augusto, Juliana, Pereira, Thaís Abigail, Hein, Luis Rogerio de Oliveira

“…► Quantitative fractography of carbon/epoxy composites by fractal analysis. ► Proposal of a mixed fractal components threshold method at micro and macro…”
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Low voltage and variable-pressure scanning electron microscopy of fractured composites by Hein, Luis Rogerio de Oliveira, Campos, Kamila Amato de, Caltabiano, Pietro Carelli Reis de Oliveira

“…► Intensive use of Monte Carlo simulations for procedure optimization. ► Low voltage and low vacuum scanning electron microscopy. ► Guidelines for variable…”
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Fractal behavior throughout stretch zone of 15-5PH steel under elastic-plastic loading conditions by Campos, Kamila Amato de, Yoshino, Celso, Hein, Luis Rogerio de Oliveira

“…The topography of the fracture surface along the stretch zone of 15-5PH steel is analyzed for a range of specimen thicknesses, providing information on the…”
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Fractal characterization of brittle fracture in ceramics under mode I stress loading by Horovistiz, Ana Lúcia, de Campos, Kamila Amato, Shibata, Silvia, Prado, Camila C.S., Hein, Luis Rogerio de Oliveira

“…The self-affine behavior of Brazilian disk test titanium oxide specimens for KIc measurement was investigated from 3D elevation maps obtained at regular…”
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Three-dimensional reconstruction of fracture surfaces: Area matching algorithms for automatic parallax measurements by Hein, Luis Rogerio de Oliveira, Silva, Fernando de Azevedo, Nazar, Ana Maria Martinez, Ammann, Jean Jacques

“…This paper describes two solutions for systematic measurement of surface elevation that can be used for both profile and surface reconstructions for…”
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Helium Cold Atmospheric Plasma Causes Morphological and Biochemical Alterations in ICandida albicans/I Cells by Rovetta-Nogueira, Sabrina de Moura, Borges, Aline Chiodi, Oliveira Filho, Maurício de, Nishime, Thalita Mayumi Castaldelli, Hein, Luis Rogerio de Oliveira, Kostov, Konstantin Georgiev, Koga-Ito, Cristiane Yumi

“…(1) Background: Previous studies reported the promising inhibitory effect of cold atmospheric plasma (CAP) on Candida albicans. However, the exact mechanisms…”
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MRT letter: Extended depth from focus reconstruction method for stretch zone measurement in 15-5PH steel by De Oliveira Caltabiano, Pietro Carelli Reis, Rosa, Paulo Henrique Santos, De Campos, Kamila Amato, De Oliveira Hein, Luis Rogerio

“…The stretch zone width (SZW) data for 15‐5PH steel CTOD specimens fractured at −150°C to + 23°C temperature were measured based on focused images and 3D maps…”
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3-D reconstruction by extended depth-of-field in failure analysis – Case study I: Qualitative fractographic investigation of fractured bolts in a partial valve by Hein, Luis Rogerio de Oliveira, de Campos, Kamila Amato, de Oliveira Caltabiano, Pietro Carelli Reis, Horovistiz, Ana Lúcia

“…Extended depth-of-field 3-D reconstruction is an image processing based technique associated to optical microscopy for qualitative or quantitative analysis of…”
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