Results 71 to 80 of about 248 (198)

Retificador Entrelaçado Com Elevado Fator De Potência Para Operação De Um Veículo Trólebus Alimentado Por Redes Em Ca Ou Cc

Eletrônica de Potência, 2010
Este artigo apresenta o desenvolvimento e os principais resultados para um retificador boost entrelaçado operando como um estágio especial de potência de entrada para um veículo tipo trólebus, permitindo sua alimentação por sistemas de distribuição em ...
Carlos Alberto Canesin, Guilherme de Azevedo e Melo, Flávio Alessandro Serrão Gonçalves, Rodrigo Alessandro Nunes de Oliveira, Jerry Marco Muno, Marcelo dos Santos   +5 more
doaj   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Retificador PFC Monofásico Bridgeless Baseado em Interruptores GaN HEMT Empregando Estratégia de Modulação Pwm de Alta Resolução Implementada em FPGA

Eletrônica de Potência, 2019
Interruptores de potência baseados em materiais do tipo wide bandgap propiciam o uso de elevada frequência de comutação sem aumento significativo das perdas do conversor.
Murilo K. Lohn, André S. de Carvalho, José A. Arbugeri, Tiago K. Jappe, Samir A. Mussa   +4 more
doaj   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

Advanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev, Noah‐Lean Roschlaub, Anne Jung   +2 more
wiley   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

Advanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare, Y. Beideler, D. Chune, R. De Guio, T. Roland, H. Chibane   +5 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Reator eletrônico de alto fator de potência com tensão constante no barramento contínuo

Eletrônica de Potência, 1998
Este artigo apresenta um reator eletrônico de alto fator de potência baseado em um único estágio de processamento de potência. Através do controle da frequência de chaveamento as tensões do barramento CC e das chaves semicondutoras são mantidas ...
Ricardo O. Brioschi, Marcelo M. Lamego, José L. F. Vieira   +2 more
doaj   +1 more source

Conversores Integrados Híbridos: Passive-Stacked 3 RD Order (PS3) Boost

Power management integrated circuits (PMICs), in the form of DC/DC converters, play a significant role in today's market due to their wide range of applications in the electronics industry. Among the hybrid converter topologies that meet this demand, the Passive-Stacked 3rd Order (PS3) buck stands out, achieving 98.8% efficiency when fully integrated ...
Castellanos Rodriguez, Juan Camilo, Aquino Henn, Tales   +1 more
openaire   +2 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source