MAURICIO DAVID MARTINS DAS NEVES

Resumo

Graduate at Engenharia Metalúrgica from Centro Universitário da FEI (1982), graduate at Engenharia Civil from Universidade Guarulhos (1998), master's at Mechanical Engineering from Universidade Estadual de Campinas (1986) and PhD at Tecnologia Nuclear Materiais from Universidade de São Paulo (2005). Has experience in Material and Metallurgical Engineering, focusing on Welding, Powder Metallurgy and Additive Manufacturing , acting on the following subjects: welding, microstructure, and powder metallurgy. Is currently a professor of the graduate program at the University of São Paulo. Currently been active in the mechanical and microstructural behavior of metallic biomaterials processed by casting, machining or by powder metallurgy.and additive manufacturing. Published 4 book chapters, 42 articles in specialized journals and 126 works in the annals of events. It has 10 technological products, processes or techniques, 1 with registration. In terms of guidelines completed or in progress, there are 15 master's dissertations and 5 doctoral theses, in addition to supervising 13 scientific initiation works and 22 course completion works in the areas of Mechanical Engineering and Materials / Metallurgical and Civil Engineering. In the last 20 years he participated in 3 research projects and 14 technological development projects. Provides technical consultancy and teaches courses on industrial processes in companies. Participated in several processes of technology transfer to the industry and in several technological developments in partnerships with numerous companies. (Text obtained from the Currículo Lattes on November 17th 2021)


Possui graduação em Engenharia Metalúrgica pelo Centro Universitário da FEI (1982), graduação em Engenharia Civil pela Universidade Guarulhos (1998), mestrado em Engenharia Mecânica pela Universidade Estadual de Campinas (1986) e doutorado em Tecnologia Nuclear- Materiais pelo Instituto de Pesquisas Energéticas e Nucleares (IPEN) da Universidade de São Paulo (2005). Foi pesquisador do IPEN de 1984 até 2018. Iniciou funções de Professor na Faculdade de Engenharia Industrial (FEI) em fevereiro de 1992, encerrando-as em junho de 2020 na disciplina de Soldagem e Estruturas de construção Metálica. Atualmente é professor e orientador credenciado do programa de pós-graduação do Instituto de Pesquisas Energéticas e Nucleares / Universidade de São Paulo e pesquisador voluntário da Comissão Nacional de Energia Nuclear. Tem experiência na área de Engenharia de Materiais/ Metalúrgica, com ênfase em materiais metálicos nos processamentos envolvendo: Soldagem, Metalurgia do Pó e Manufatura Aditiva, além de em caracterização microestrutural e mecânica de componentes fabricados por estas técnicas. Tem atuado na área de processamento, comportamento mecânico e caracterização microestrutural de biomateriais metálicos. Atua na área de ensino e projeto de estruturas metálicas na construção civil. Publicou 4 capítulos de livros, 42 artigos em periódicos especializados e126 trabalhos em anais de eventos. Possui 10 produtos tecnológicos, processos ou técnicas, sendo 1 com registro. Em termos de orientações concluídas ou em andamento são 15 dissertações de mestrado e 5 teses de doutorado, além de ter orientado 13 trabalhos de iniciação científica e 22 trabalhos de conclusão de curso nas áreas Engenharia Mecânica e Engenharia de Materiais/Metalúrgica e Civil. Nos últimos 20 anos participou de 3 projetos de pesquisa e 14 projetos de desenvolvimento tecnológico. Presta consultoria técnica e ministra cursos sobre processos industriais em empresas. Participou de diversos processos de transferência tecnológica à indústria e de diversos desenvolvimentos tecnológicos em parcerias com inúmeras empresas. (Texto extraído do Currículo Lattes em 17 nov. 2021)

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Agora exibindo 1 - 6 de 6
  • Resumo IPEN-doc 17777
    Laser welding and TIG welding of titanium alloy in dental prostheses laboratory
    2008 - CARDOSO, L.M.; BERRETTA, J.R.; NEVES, M.D.M. das; ROSSI, W. de
    With the dental implants and the introduction of new dental materials, LASER and TIG have been studied as welding process in dental prostheses. This work aims to evaluate the performance of welds done with LASER (Nd:YAG) and TIG equipments for dental prostheses laboratory, measuring flexural strength (in accordance with biting forces direction) of welded titanium-aluminum-vanadium alloy. Dental prostheses situations have been considered for the joint’s configuration: joint together (with zero gap) and with space associated to filler material. The results show: i) in the laser weld with zero gap group, a similar behavior of base material; ii) TIG weld with zero gap group supported the biggest loads; and, iii) in the welds with filler material an inferior performance when compared to base material.
  • Resumo IPEN-doc 17775
    Gas shielding analysis in Ti6Al4V pulsed laser beam welding
    2008 - SILVA, D.R.; BERRETTA, J.R.; LIMA, M.S.F.; NEVES, M.D.M.; ROSSI, J.L.
    Titanium is a light and resistant material that has applications in many areas, such as medical, aeronautic and nuclear [1-4]. However, due to its high temperature reactivity with oxygen and other air elements, welding of this material may be very difficult. The use of high intensity energy sources such as the laser generates a smaller heat affected zone, reducing the oxidized area. Nevertheless, there is still the need for using a neutral gas protection such as helium, argon or both. This protection interacts with the process through changes in plasma formation, modifying characteristics of the weld, as the weld width and penetration, or even the appearance of porosity. Optimization of this gas protection is necessary to achieve better results with fewer costs. To optimize the gas protection, it was first found a good weld condition that lead to full penetration of the material with minimum loses (figure 1). This was done using the results from previous works [5] and changing focal position until getting good results. After this, it was used helium, argon and mixtures of these gases as gas shielding both in axial and in back protection. The analyses were done through the use of mechanical tests such as tensile, bending and hardness tests and visual inspection. The results showed that only a 5 l/min argon flux in axial shielding is needed to protect the weld from oxidation and that, although oxidation was found in the back of the welds, no backshielding was needed. The samples had ultimate strength higher than the base material, showing that the conditions used are appropriate for this alloy.
  • Artigo IPEN-doc 10961
    Soldagem entre os acos inoxidaveis AISI 304 e AISI 420 com laser de Nd:YAG pulsado
    2004 - ROSSI, W.; BERRETTA, J.R.; NEVES, M.D.M.; ALMEIDA, I.A.; VIEIRA JUNIOR, N.D.
  • Artigo IPEN-doc 10313
    Soldagem por laser do Nd=YAG do aco inoxidavel martensitico AlSI 420
    2000 - BERRETTA, J.R.; NEVES, M.D.M.; ROSSI, W.; ALMEIDA, I.A.; MORATO, S.P.; VIEIRA JUNIOR, N.D.
  • Artigo IPEN-doc 14255
    Solidificacao da zona de fusao na soldagem do AISI 304 com inconel 600 por laser de Nd:YAG
    2009 - NEVES, MAURICIO D.M. das; LOTTO, ANDRE; BERRETTA, JOSE R.; ROSSI, WAGNER de; VIEIRA JUNIOR, NILSON D.
  • Artigo IPEN-doc 12263
    Pulsed Nd:YAG laser welding of AISI 304 to AISI 420 stainless steels
    2007 - BERRETTA, JOSE R.; ROSSI, WAGNER de; NEVES, MAURICIO D.M. das; ALMEIDA, IVAN A. de; VIEIRA JUNIOR, NILSON D.