Navegando por Autor "BLANCO, Claudio José Cavalcante, Ph.D."

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Avaliação do Processo Corner Glue para Componentes Eletrônicos BGAs em Placas de Notebook
(Universidade Federal do Pará, 2012) OLIVEIRA, Haroldo Melo de; BLANCO, Claudio José Cavalcante, Ph.D.
This work is primarily providing knowledge about the real need to use the process corner glue in the corners of the components Ball Grid Array (BGA). The process is commonly used in notebook boards to provide mechanical resistance of solder joints, which can be affected during the process of SMT assembly, manual assembly, testing, ICT and functional testing and even use as a final product. Based on theoretical knowledge of the structures of components BGAs is intended what are the critical points that must be treated in the manufacturing process to ensure that the variables of assembly and testing will not harm the structures of the solder joints. Providing through bending tests, dye and pry analysis and electron microscopy, conclusive data on the strength of the epoxy glue used in the process corner glue. Providing manufacturing companies conditions of knowledge and decision on the need for deployment, continuity or even eliminating the process of applying glue to the corner boards mounted notebook technology with tin lead solder (with lead soldering).
Melhoria do Desempenho de Motores de Combustão Interna em Empresa de Geração de Energia - Via Implantação de Manutenção Preditiva
(Universidade Federal do Pará, 2011) FONSECA JUNIOR, Milton; BLANCO, Claudio José Cavalcante, Ph.D.
This work aims to describe the main issues related to implementation of TPM (Total Productive Maintenance) and PM (predictive maintenance) in power plants using internal combustion engines. The two types of planning were presented with emphasis on maintenance activities. Currently the generation planning of the company do not allow unplanned outage. The most common faults were as a result of unbalance, misalignment, improper setting, coupling defective and contaminated oil. Issues that were eliminated with the implementation of predictive maintenance and implementation of a TPM program. Emphasis was placed on the importance of four pillars in this methodology (specific improvements, Autonomous Maintenance, Planned Maintenance and Education & Training). By the use of this methodology, it was shown some results achieved after its implementation such as: reducing the annual cost of maintenance, reduction of corrective maintenance, increase of MTBF (Medium Time Between Failures) and reduction of MTTR (Mean Time To Repair) in all areas of our plant. These results are reflected in the power generation and more reliability for our customers.