Documentação de convênios

URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173

Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas

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2012 - 20152

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Autor: search.filters.author.LOPES, Raimundo Valdan PereiraAssunto: search.filters.subject.Engenharia Elétrica

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
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    Study of Quality and Reliability of Welding Process Reflow Component Technology BGA
    (INSTITUTO DE TECNOLOGIA, 2015) COSTA, Robson Marques; LEITE, Jandecy Cabral; VIEIRA, Antonio da Silva; LOPES, Raimundo Valdan Pereira; FUJIYAMA, Roberto Tetsuo; Prof. Dr. Carlos Tavares da Costa Júnior
    This study analyzed the quality and reliability of the BGA component Reflow soldering process in notebook motherboard manufacturing. Using a qualitative-quantitative approach via case study methodology, cross-section and X-ray analyses were conducted to evaluate alignment, cracks, and voids. The findings confirmed compliance with international standards IPC-A-610E and IPC-7095B, indicating the process is reliable and cost-effective for industrial application.
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    Estudo de la aplicación de aceite vegetal de Andiroba (Carapa guianensis) como un aislante eléctrico
    (INSTITUTO DE TECNOLOGIA, 2012) PINTO, Vagner Barroso; FUJIYAMA, Roberto Tetsuo; LIMADA, Otávio Fernandes; LEITE, Jandecy Cabral; LOPES, Raimundo Valdan Pereira; MAGALHÃES, Edilson Marques
    The study assessed the technical feasibility of andiroba oil (Carapa guianensis) as a dielectric insulating fluid (OVI) in transformers, comparing its physicochemical and electrical properties with commercial vegetable oils (Biotemp®, Envirotemp® FR3™) and mineral oil (OMI-1). Results showed that andiroba oil met density and viscosity limits per ABNT NBR 15422 standards and exhibited no corrosiveness. However, neutralization treatments were required to reduce acidity and water content (from 1306 ppm to <200 ppm). Dielectric strength (10.5 kV) and loss factor (12.5%) were below standards, indicating the need for adsorptive processes to enable industrial application.