Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Cosme Roberto Moreira Silva"'
Autor:
J.L.A. Ferreira, Thiago Barbosa de Miranda, José Alexander Araújo, Remy Kalombo Badibanga, Cosme Roberto Moreira Silva
Publikováno v:
IEEE Transactions on Power Delivery. 37:539-546
Overhead conductors for transmission lines are subjected to cyclic loading due to Aeolian vibration which can lead to the failure of their wires. One of the most critical transmission power line points where fatigue failure occurs is the vicinity of
Publikováno v:
International Journal of Fatigue. 127:25-35
Fatigue damage of overhead conductors is a major problem in the transmission line industry. The damage process, which typically takes place at the contact between the conductor and components or between contacting wires of adjacent layers, occurs und
Autor:
José Alexander Araújo, José Antônio Euzébio Paiva, Cosme Roberto Moreira Silva, J.L.A. Ferreira, Paola Cristina Cajas Daza, Rodrigo Arbey Muñoz Meneses
Publikováno v:
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
Universidade de Brasília (UnB)
instacron:UNB
In this work, controlled precipitation synthesis methods and polymeric precursors (Pechini) were used to obtain gadolinium-doped cerium oxide solid electrolytes (Ce0.8Gd0.2O1.9) and double-doped cerium oxide with gadolinium and samarium (Ce0.8Gd0.2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::418a145bd7eba329e04e3c0968f79f88
https://repositorio.unb.br/handle/10482/41065
https://repositorio.unb.br/handle/10482/41065
Autor:
Erick Rocha Vieira, J.L.A. Ferreira, R.B. Kalombo, José Alexander Araújo, Cosme Roberto Moreira Silva
Publikováno v:
Matéria (Rio de Janeiro). 26
Com a necessidade de aperfeicoamento do processo de transmissao e distribuicao de energia eletrica, as industrias e concessionarias desse setor estao em busca de componentes mais otimizados para suas linhas de transmissao. Em consequencia, ha a neces
Autor:
J.A. Araújo, Cosme Roberto Moreira Silva, José I. M. Díaz, J.L.A. Ferreira, Rodrigo Lisboa Pereira
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 42
When power transmission cables are subjected to oscillatory displacements, due to the wind vibration, fretting fatigue phenomenon takes place, being the main prompter of catastrophic failure. In this work, we investigate the behavior of an 1350-H19 a
Autor:
Paola Cristina Cajas Daza, Rodrigo Arbey Muñoz Meneses, Ana Candida Martins Rodrigues, Cosme Roberto Moreira Silva
Publikováno v:
Ceramics International. 44:13699-13705
Doped CeGdO and codoped CeGdOSmO compositions were synthesized, giving rise to nanoparticulate powders. Ionic conductivities at bulk and grain boundaries of the sintered samples were determined, exhibiting increased conductivity in the samaria-codope
Autor:
José Alexander Araújo, Raimundo Carlos Silverio Freire Júnior, M.S. Pestana, Cosme Roberto Moreira Silva, J.L.A. Ferreira, R.B. Kalombo
Publikováno v:
Fatigue & Fracture of Engineering Materials & Structures. 41:2577-2586
Autor:
Ana Candida Martins Rodrigues, Paola Cristina Cajas Daza, José Alexander Araújo, Cosme Roberto Moreira Silva, J.L.A. Ferreira, Rodrigo Arbey Muñoz Meneses
Publikováno v:
Ceramics International. 44:2138-2145
Solid electrolyte powders based on gadolium-doped and samaria-codoped ceria of compositions Ce 0.8 Gd 0.2−x Sm x O 1.9 (x = 0.00; 0.01; 0.03; 0.05) were sintered using the polymeric precursor method (Pechini). The X-ray diffractometry results confi
Autor:
Marcelo Avelar Antunes, Eduardo Martins Fontes do Rêgo, Antonio Miranda, Cosme Roberto Moreira Silva
Publikováno v:
Engineering Fracture Mechanics. 186:331-346
This paper presents stress intensity factor (SIF) solutions for fretting fatigue conditions by including a stress gradient factor (SGF) to correct the classic geometry factor for tension semi-infinite strip (TSIS) specimen. This gradient factor consi
Autor:
Licurgo Borges Winck, Jesús Mauricio González Martínez, Cosme Roberto Moreira Silva, José Alexander Araújo, J.L.A. Ferreira, Ana Candida Martins Rodrigues
Publikováno v:
Ceramics International. 43:16408-16415
Studies on fuel cell components have attracted interest due to the growing demand for sustainable energy sources. In the present study, synthesis of nanometric powders of the Ce 0.8 Sm 0.2−x Gd x O 1.9 system (x = 0; 0.05; 0.1) system was carried o