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Abstract(s)
Numa sociedade onde uma grande variedade de factores influencia o desempenho das Organizações, busca-se constantemente uma maior competitividade, eficácia e crescimento. Devido aos novos desafios da globalização e da necessidade constante de desenvolvimento tecnológico, as Organizações são obrigadas a desenvolver novos modelos de negócio, que permitam ter um desempenho crescente. Especialmente no ramo industrial, a manutenção tem vindo a ter um peso crescente no desempenho de uma indústria; a pressão constante para tempos entrega, fluxos de produção, padrões de qualidade e evolução tecnológica, leva as empresas a apostar na Manutenção Industrial.
Todos os equipamentos estão sujeitos a uma deterioração progressiva, especialmente quando têm um funcionamento intensivo, sendo necessário manter o seu bom estado de integridade e de funcionamento. É nesta etapa que a manutenção assume um papel principal, tendo sempre como objectivo o aumento da disponibilidade dos equipamentos. Para um gestor de manutenção, o equipamento ideal terá que ter uma fiabilidade excelente, sem paragens imprevistas, com uma manutenção fácil e preferencialmente barata. Muito dificilmente estes cenários se verificam em simultâneo, a manutenção é obrigada a implementar várias ferramentas e modelos de forma a responder positivamente aos requisitos da produção.
O presente trabalho tem como objectivo identificar, explorar e implementar dois modelos distintos que, interligados, permitem uma visão abrangente do nível de risco associado ao funcionamento de um equipamento, e qual a sua necessidade de investimento para a respectiva mitigação ou controlo desse risco. Como caso de estudo, foi estudada uma prensa hidráulica d0e painéis aeronáuticos, considerada crítica para o fluxo de produção da Organização, tendo sido avaliados os vários modos de falha e efeitos através da metodologia FMEA, bem como a identificação de acções preventivas para a redução do risco. De forma a facilitar o trabalho do gestor de manutenção, foi implementada a segunda etapa do presente trabalho, tendo sido explorada a metodologia AHP para a priorização das várias medidas preventivas com necessidade de investimento.
Pretende-se com este trabalho explorar e implementar um processo replicável que permita facilitar o papel do gestor de manutenção, aquando da necessidade de tomada de decisão, no desenvolvimento de planos de investimento para a aquisição de stocks estratégicos de máquinas consideradas criticas para a Organização.
In a society where a huge variety of factors influences corporations performance there is a constant seeking for higher competitiveness, efficiency and growing levels. Due to new globalization challenges and the constant need for technology development, companies are forced to develop new business models that allow them to have a rising performance. Maintenance plays an importante role concerning the desired industrial performance, regarding the constant pressure to delivery times, production flow, quality standards and technological innovation, leading organizations to bet in Industrial Maintenance. All equipment are subjected to a progressive deterioration, especially when they have one intense operation, being necessary to maintain its integrity. In this context, the maintenance leads on to centre stage, having always the major propose to increase equipments availability. To the maintenance manager, the perfect equipment has an excellent reliability, without unexpected stops, with an easy maintenance and preferably cheap. As it almost never happens simultaneously, the maintenance managers, engineers and technicians are forced to implement several tools and models to answer positively to the production requests. The objective of this work is to identify, explore and implement two distinctive models that once linked together allow having a full vision of the risks related to an equipment operation and to know what the best investment needed to achieve the risk mitigation or its control. The models were implemented on the study of a hydraulic press for aeronautical panels that is considered critical to the production flow. The several failure modes and effect were studied through the FMEA method, and the suggestion of preventive actions was made to reduce the risk. To simplify the maintenance manager work, it was implemented the second step of this work with the AHP method to the prioritization of preventive maintenance with investment needs. The aims of this project are to explore and implement one replicable process that allows facilitating the maintenance manager work when he has to make on decision and to develop investment plans to buy strategic stocks of critical equipment to the company.
In a society where a huge variety of factors influences corporations performance there is a constant seeking for higher competitiveness, efficiency and growing levels. Due to new globalization challenges and the constant need for technology development, companies are forced to develop new business models that allow them to have a rising performance. Maintenance plays an importante role concerning the desired industrial performance, regarding the constant pressure to delivery times, production flow, quality standards and technological innovation, leading organizations to bet in Industrial Maintenance. All equipment are subjected to a progressive deterioration, especially when they have one intense operation, being necessary to maintain its integrity. In this context, the maintenance leads on to centre stage, having always the major propose to increase equipments availability. To the maintenance manager, the perfect equipment has an excellent reliability, without unexpected stops, with an easy maintenance and preferably cheap. As it almost never happens simultaneously, the maintenance managers, engineers and technicians are forced to implement several tools and models to answer positively to the production requests. The objective of this work is to identify, explore and implement two distinctive models that once linked together allow having a full vision of the risks related to an equipment operation and to know what the best investment needed to achieve the risk mitigation or its control. The models were implemented on the study of a hydraulic press for aeronautical panels that is considered critical to the production flow. The several failure modes and effect were studied through the FMEA method, and the suggestion of preventive actions was made to reduce the risk. To simplify the maintenance manager work, it was implemented the second step of this work with the AHP method to the prioritization of preventive maintenance with investment needs. The aims of this project are to explore and implement one replicable process that allows facilitating the maintenance manager work when he has to make on decision and to develop investment plans to buy strategic stocks of critical equipment to the company.
Description
Trabalho final de mestrado em Engenharia Mecânica
Keywords
FMEA AHP Manutenção Maintenance Stock estratégico Strategic stock Decisão de investimento Decision making
Citation
SOUSA, Iris Margarida Reis dos Santos Monteiro de - Metodologia FMEA aplicada a prensa de moldagem de superfícies de voo : utilização de método AHP na tomada de decisão. Lisboa: Instituto Superior de Engenharia de Lisboa, 2017. Dissertação de mestrado.
Publisher
Instituto Superior de Engenharia de Lisboa