Proposta de modelo AHP-BWM para ponderação de critérios na mensuração da sustentabilidade em etapas de processo de manufatura

Abstract

The concern with the environment is becoming increasingly relevant, leading companies and organizations to create strategies to analyse the environmental impacts arising from their activities and develop interventions. In this sense, many resort to sustainability assessment techniques. The mechanical manufacturing sector is one of those that benefits from this, since it aggregates several activities that convert raw material and energy into products, generating waste and emissions. In order for companies to be able to carry out this assessment, many use multicriteria decision-making methods, since they allow the merge of their strategic needs into the method. Two multicriteria decision methods, Analytic Hierarchy Process (AHP) and Best Worst Method (BWM) are presented, as well as a hybrid model formed by the combined use of them. Thus, the main objective of this work was to present a proposal for weighting criteria in measuring sustainability in manufacturing process stages using the AHP-BWM model. This model was applied using the same list of criteria used by Murad (2020), as well as the same process, which was the deposition of metallic coating in sugar mill rolls, and it was applied in two different companies in the sugar and alcohol industry. In addition, a literature review was also carried out on sustainability assessment proposals in manufacturing processes and the review on the feasibility of using multicriteria decision-making methods for weighting sustainability in manufacturing processes. It was verified that the AHP-BWM model obtained positive results in the application in manufacturing processes, besides considerably reducing the amount of paired comparisons if only AHP method had been used. An analysis was also made of the most important criteria in each company, as well as the most important points of Murad (2020) used in this work.