Navegação Engenharias por Autor "Fragassa, Cristiano"
Resultados 1-9 de 9
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Comparative study of jet slurry erosion of martensitic stainless steel with tungsten carbide HVOF coating
Bastidas, Freddy Galileo Santacruz; Takimi, Antonio Shigueaki; Camargo, Felipe Vannucchi de; Bergmann, Carlos Perez; Fragassa, Cristiano (2019) [Artigo de periódico]This work evaluates the behavior of a martensitic stainless steel (AISI 410) thermally treated by quenching and tempering with a tungsten carbide (86WC-10Co-4Cr) coating obtained by high-velocity oxygen fuel (HVOF) thermal ... -
Mechanical characterization of gres porcelain and low-velocity impact numerical modeling
Fragassa, Cristiano; Camargo, Felipe Vannucchi de; Pavlovic, Ana; Silveira, Antonio Carlos de Figueiredo; Minak, Giangiacomo; Bergmann, Carlos Perez (2018) [Artigo de periódico]The current investigation was conducted on gres porcelain stoneware, a robust, impermeable and aesthetically pleasing type of ceramic mainly used for flooring, characterizing its resistance to bending and low-velocity ... -
Numerical analysis of an overtopping wave energy converter subjected to the incidence of irregular and regular waves from realistic sea states
Hübner, Ricardo Gabriel; Fragassa, Cristiano; Paiva, Maycon da Silveira; Oleinik, Phelype Haron; Gomes, Mateus das Neves; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Machado, Bianca Neves; Isoldi, Liércio André (2022) [Artigo de periódico]The present study aims to evaluate the difference in the fluid-dynamic behavior of an overtopping wave energy converter under the incidence of irregular waves based on a realistic sea state when compared to the incidence ... -
Numerical analysis of the influence of empty channels design on performance of resin flow in a porous plate
Magalhães, Glauciléia Maria Cardoso; Fragassa, Cristiano; Lemos, Rafael de Lima; Isoldi, Liércio André; Amico, Sandro Campos; Rocha, Luiz Alberto Oliveira; Souza, Jeferson Ávila; Santos, Elizaldo Domingues dos (2020) [Artigo de periódico]This numerical study aims to investigate the influence of I and T-shaped empty channels’ geometry on the filling time of resin in a rectangular porous enclosed mold, mimicking the main operating principle of a liquid resin ... -
Numerical study and geometrical investigation of an onshore overtopping device wave energy converter with a seabed coupled structure
Barros, Andréia S. de; Fragassa, Cristiano; Paiva, Maycon da Silveira; Rocha, Luiz Alberto Oliveira; Machado, Bianca Neves; Isoldi, Liércio André; Gomes, Mateus das Neves; Santos, Elizaldo Domingues dos (2023) [Artigo de periódico]Studies regarding renewable energy sources have gained attention over recent years. One example is wave energy converters, which harvest energy from sea waves using different operational principles such as oscillating water ... -
Predicting the tensile behaviour of cast alloys by a pattern recognition analysis on experimental data
Fragassa, Cristiano; Babic, Matej; Bergmann, Carlos Perez; Minak, Giangiacomo (2019) [Artigo de periódico]The ability to accurately predict the mechanical properties of metals is essential for their correct use in the design of structures and components. This is even more important in the presence of materials, such as metal ... -
Sequential deposition method of TiO2/CH3NH3PbI3 films for solar cell application
Oliveira, Anne Esther Ribeiro Targino Pereira de; Bonatto, Fernando; Alves, Annelise Kopp; Fragassa, Cristiano (2019) [Artigo de periódico]Seeking to study innovative solar cell compositions with the goal to reach the highest energy efficiency level attainable, the aim of this study was to develop a route to obtain a solar cell composed by hybrid perovskite ... -
Synthesis, characterization and application by HVOF of a WCCoCr/NiCr nanocomposite as protective coating against erosive wear
Guaglianoni, Waleska Campos; Cunha, Matheus Araújo da; Bergmann, Carlos Perez; Fragassa, Cristiano; Pavlovic, Ana (2018) [Artigo de periódico]The scope of this work is to synthetize and characterize a WCCoCr/NiCr nanocomposite evaluating its application as protective coating against erosive wear when applied by High Velocity Oxygen Fuel (HVOF). The composite was ... -
Verification and Validation of a Methodology to Numerically Generate Waves Using Transient Discrete Data as Prescribed Velocity Boundary Condition
Maciel, Rafael P.; Fragassa, Cristiano; Machado, Bianca Neves; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Gomes, Mateus das Neves; Isoldi, Liércio André (2021) [Artigo de periódico]This work presents a two-dimensional numerical analysis of a wave channel and a oscillating water column (OWC) device. The main goal is to validate a methodology which uses transient velocity data as a means to impose ...