MAURICIO DAVID MARTINS DAS NEVES

Resumo

Graduate at Engenharia MetalĆŗrgica from Centro UniversitĆ”rio 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 SĆ£o 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 SĆ£o 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 CurrĆ­culo Lattes on November 17th 2021)


Possui graduaĆ§Ć£o em Engenharia MetalĆŗrgica pelo Centro UniversitĆ”rio da FEI (1982), graduaĆ§Ć£o em Engenharia Civil pela Universidade Guarulhos (1998), mestrado em Engenharia MecĆ¢nica pela Universidade Estadual de Campinas (1986) e doutorado em Tecnologia Nuclear- Materiais pelo Instituto de Pesquisas EnergĆ©ticas e Nucleares (IPEN) da Universidade de SĆ£o Paulo (2005). Foi pesquisador do IPEN de 1984 atĆ© 2018. Iniciou funƧƵes 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 construĆ§Ć£o MetĆ”lica. Atualmente Ć© professor e orientador credenciado do programa de pĆ³s-graduaĆ§Ć£o do Instituto de Pesquisas EnergĆ©ticas e Nucleares / Universidade de SĆ£o Paulo e pesquisador voluntĆ”rio da ComissĆ£o Nacional de Energia Nuclear. Tem experiĆŖncia na Ć”rea de Engenharia de Materiais/ MetalĆŗrgica, com ĆŖnfase em materiais metĆ”licos nos processamentos envolvendo: Soldagem, Metalurgia do PĆ³ e Manufatura Aditiva, alĆ©m de em caracterizaĆ§Ć£o microestrutural e mecĆ¢nica de componentes fabricados por estas tĆ©cnicas. Tem atuado na Ć”rea de processamento, comportamento mecĆ¢nico e caracterizaĆ§Ć£o microestrutural de biomateriais metĆ”licos. Atua na Ć”rea de ensino e projeto de estruturas metĆ”licas na construĆ§Ć£o civil. Publicou 4 capĆ­tulos de livros, 42 artigos em periĆ³dicos especializados e126 trabalhos em anais de eventos. Possui 10 produtos tecnolĆ³gicos, processos ou tĆ©cnicas, sendo 1 com registro. Em termos de orientaƧƵes concluĆ­das ou em andamento sĆ£o 15 dissertaƧƵes de mestrado e 5 teses de doutorado, alĆ©m de ter orientado 13 trabalhos de iniciaĆ§Ć£o cientĆ­fica e 22 trabalhos de conclusĆ£o de curso nas Ć”reas Engenharia MecĆ¢nica e Engenharia de Materiais/MetalĆŗrgica e Civil. Nos Ćŗltimos 20 anos participou de 3 projetos de pesquisa e 14 projetos de desenvolvimento tecnolĆ³gico. Presta consultoria tĆ©cnica e ministra cursos sobre processos industriais em empresas. Participou de diversos processos de transferĆŖncia tecnolĆ³gica Ć  indĆŗstria e de diversos desenvolvimentos tecnolĆ³gicos em parcerias com inĆŗmeras empresas. (Texto extraĆ­do do CurrĆ­culo Lattes em 17 nov. 2021)

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  • Artigo IPEN-doc 30226
    Residual stress and fracture toughness study in A516 Gr70 steel joints welded and repaired by arc processes
    2023 - BARROS, REGIS de M.C. de; NEVES, MAURICIO D.M. das
    Structural components made of steel are used in several areas and require welding for assembly. In some situations, repair of the weld bead, also performed by electric arc welding, can be used to correct, and eliminate any discontinuities. However, electric arc welding causes the presence of residual stresses in the joint, which can impair its performance and not meet specific design requirements. In this paper, welded joints made of ASTM A 516 GR 70 steel plates, with a thickness of 30.5 mm, welded by the MAGā€”Metal Active Gas process (20% CO2) and using a ā€œKā€ groove were analysed. The joints were manufactured with seven welding passes on each side of the groove. After welding, one batch underwent repair of the bead by TIG welding (Tungsten Insert Gas) and another batch underwent two repairs by TIG welding. Were presented results of the behaviour of the residual stress profile measured by X-ray diffraction and the Vickers microhardness profile in the joints as well the fracture toughness in the conditions only welded and submitted to repairs. The results indicated that the greater number of repair passes reduced the residual compressive stress values obtained in the material manufacturing process and caused a stabilization on the Vickers hardness values. It was concluded that compressive residual stresses did not play a major role in the R-curve results. The presence of discontinuities in the welded joint caused greater influence on the behaviour of the R curve.