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Authors
Advisor(s)
Abstract(s)
O desenvolvimento rápido da tecnologia hoje em dia leva a que o
investimento em equipamentos de ultima geração seja bastante acrescido. E como
isso por si só, não fosse um problema acrescido, a manutenção dos equipamentos
pode ser por vezes dispendiosa. Como tal, torna-se importante conhecer e
desenvolver os melhores métodos para a correta manutenção dos mesmos.
A manutenção mais vulgarmente conhecida é a manutenção corretiva, onde
o equipamento sofre uma avaria e os técnicos efetuam a reparação após a
identificação da avaria e a sua causa. Mas este tipo de manutenção, tem muitos
gastos não só a níveis financeiros mas também a nível de material. Como tal, o
desenvolvimento do conceito de manutenção levou a que cada vez mais a
sociedade acreditasse que a manutenção preventiva condicionada seria o melhor
método a utilizar. E foi desta forma que o conceito de controlo de condição
apareceu e foi desenvolvido. O objetivo seria fazer um acompanhamento dos
equipamentos, recorrendo a técnicas de controlo de condição. Através da medição,
ensaios ou testes periódicos aos equipamentos, conseguimos saber se o
equipamento tem alguma avaria e melhor ainda, consegue-se construir um
historial do equipamento e prever uma possível avaria através de uma análise de
tendência.
Na Marinha Portuguesa embora o conceito de manutenção tenha sido
implementado com o objetivo de realizar manutenção condicionada, a realidade
que esta enfrenta é a de uma constante utilização de manutenção corretiva para
resolver o elevado número de avarias que vão surgindo no dia a dia, a bordo dos
navios. Para tal, desenvolvi esta tese que procura abordar três das melhores
técnicas de controlo de condição, a termografia, a análise de vibrações e a análise
de fluidos e procurar a melhor forma de as implementar a bordo dos navios. Com
isto pretende-se ajudar a reduzir o número de avarias a bordo e reduzir os gastos
financeiros e de material e o tempo investido em torno de reparações corretivas.
The rapid development of technology nowadays means that investment in the latest generation equipment is greatly increased. And since this in itself was not an added problem, maintenance of the equipment can sometimes be expensive. As such, it becomes important to know and develop the best methods for the correct maintenance of them. The most commonly known maintenance is corrective maintenance, where the equipment is malfunctioning and technicians repair after the fault and the cause are identified. But this type of maintenance, has many expenses not only at financial levels but also at material level. As such, the development of the concept of maintenance has led to society increasingly believing that conditional preventive maintenance would be the best method to use. And it was in this way that the concept of condition control appeared and was developed. The objective would be to follow up the equipment, using condition control techniques. By measuring, testing or periodically testing equipment, we can determine if the equipment has a fault and, better still, we can build a history of the equipment and predict a possible breakdown through a trend analysis. In the Portuguese Navy, although the concept of maintenance has been implemented with the objective of performing conditioned maintenance, the reality it faces is that of a constant use of corrective maintenance to solve the high number of malfunctions that are occurring on a daily basis, on board of ships. To that end, I developed this thesis that seeks to address three of the best condition control techniques, thermography, vibration analysis and fluid analysis, and how best to implement them on board ships. This is intended to help reduce the number of failures on board and reduce the financial and material costs and time invested in corrective repairs.
The rapid development of technology nowadays means that investment in the latest generation equipment is greatly increased. And since this in itself was not an added problem, maintenance of the equipment can sometimes be expensive. As such, it becomes important to know and develop the best methods for the correct maintenance of them. The most commonly known maintenance is corrective maintenance, where the equipment is malfunctioning and technicians repair after the fault and the cause are identified. But this type of maintenance, has many expenses not only at financial levels but also at material level. As such, the development of the concept of maintenance has led to society increasingly believing that conditional preventive maintenance would be the best method to use. And it was in this way that the concept of condition control appeared and was developed. The objective would be to follow up the equipment, using condition control techniques. By measuring, testing or periodically testing equipment, we can determine if the equipment has a fault and, better still, we can build a history of the equipment and predict a possible breakdown through a trend analysis. In the Portuguese Navy, although the concept of maintenance has been implemented with the objective of performing conditioned maintenance, the reality it faces is that of a constant use of corrective maintenance to solve the high number of malfunctions that are occurring on a daily basis, on board of ships. To that end, I developed this thesis that seeks to address three of the best condition control techniques, thermography, vibration analysis and fluid analysis, and how best to implement them on board ships. This is intended to help reduce the number of failures on board and reduce the financial and material costs and time invested in corrective repairs.
Description
Keywords
Manutenção, Controlo de Condição, Marinha Portuguesa, Termografia, Análise de Vibrações, Análise de Fluidos Maintenance, Condition Monitoring, Portuguese Navy, Thermography, Vibration Analysis, Fluid Analysis