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Advisor(s)
Abstract(s)
Esta dissertação apresenta um caso real de um problema de decisão na seleção de fornecedores de uma das principais matérias-primas de uma indústria de pás eólicas. Para o estudo foram considerados todos os fornecedores atualmente qualificados, segundo normas e especificações bastante rigorosas, e um em processo de qualificação. É uma escolha complexa, dada a importância estratégica do produto e a multiplicidade de critérios a considerar, tanto quantitativos como qualitativos. A forte competitividade, requer uma atenção especial no que diz respeito à seleção de fornecedores; não é só o preço que interessa, aliás, um dia de paralisação por falha na entrega, por exemplo, corresponde a perdas elevadas que teriam justificado a compra a um fornecedor com um preço superior, mas sem falhas de entrega. De forma a contribuir para a resolução do problema, foram aplicadas as metodologias PROMETHEE e AHP, cujos resultados permitem estabelecer um ranking dos fornecedores considerados. Os resultados vão auxiliar a empresa na seleção de fornecedores de fibra de vidro e, em alguns casos, esclarecer onde encontrar os principais trade-offs.
This study presents a real case of a decision problem in supplier selection of one of the main raw materials of a wind blades industry. For the study were considered all currently qualified suppliers according to considerably rigorous standards and specifications and one in qualification process. It is a complex choice, given the strategic importance of the product and the multiplicity of criteria to be considered, both quantitative and qualitative. The strong competitiveness requires a special attention in which concerns the supplier selection; not only the price matters, in fact, a day of stoppage due to failure in a delivery, for example, correspond to high losses that would have justified the purchase from a supplier with a higher price, but with no delivery failures. In order to contribute to the problem resolution, the methodologies PROMETHEE and AHP were applied, whose results allow to stablish a ranking of the considered suppliers. The results will support the company on the selection of fiberglass suppliers and in some cases clarify where they can find the main trade-offs.
This study presents a real case of a decision problem in supplier selection of one of the main raw materials of a wind blades industry. For the study were considered all currently qualified suppliers according to considerably rigorous standards and specifications and one in qualification process. It is a complex choice, given the strategic importance of the product and the multiplicity of criteria to be considered, both quantitative and qualitative. The strong competitiveness requires a special attention in which concerns the supplier selection; not only the price matters, in fact, a day of stoppage due to failure in a delivery, for example, correspond to high losses that would have justified the purchase from a supplier with a higher price, but with no delivery failures. In order to contribute to the problem resolution, the methodologies PROMETHEE and AHP were applied, whose results allow to stablish a ranking of the considered suppliers. The results will support the company on the selection of fiberglass suppliers and in some cases clarify where they can find the main trade-offs.
Description
Keywords
Seleção de fornecedores AHP PROMETHEE Métodos de decisão multicritério Supplier selection Multicriteria decision criteria