Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/2176-1523.20211682
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

Aplicação do TOPSIS na análise do processo de infusão a vácuo para fabricação de compósitos com fios de juta

Application of TOPSIS in evaluating the vacuum infusion process toward manufacturing of jute yarn composites

Alessandro de Castro Corrêa, Jean da Silva Rodrigues, Tainã Fernandes Rodrigues, Carlos André Corrêa de Mattos, Danielle Cristina Gonzaga Corrêa, Cláudia Canto de Souza Leão

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Resumo

O objetivo deste estudo foi analisar o desempenho do processo de infusão a vácuo (VIP) na fabricação de compósitos de fios de juta e resina poliéster em comparação ao processo de laminação manual (hand lay-up), considerando múltiplos atributos com apoio do Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). O experimento envolveu a produção de compósitos de matriz de poliéster insaturado reforçados por fios de juta na forma de tecido plano. As medidas de desempenho foram a porosidade, resistência à tração, custos, redução de emissão da voláteis e a expectativa de contribuição social. Os pesos dos atributos foram determinados objetivamente a partir da informação disponível em cada critério na matriz de decisão com base na entropia da informação. O processo de laminação manual foi utilizado como referência de avaliação por ser considerado o processo convencional. Os resultados revelaram que os atributos com maior peso foram a redução de emissão de voláteis e a porosidade; que o processo VIP apresentou um desempenho superior ao processo hand lay-up; e que a TOPSIS foi apropriada a análise do problema.

Palavras-chave

Infusão a vácuo; TOPSIS; Entropia; Compósitos; Fios de juta

Abstract

This study aims to compare the vacuum infusion process (VIP) to the conventional hand lay-up process (HLU) applied to the manufacturing of jute yarn and polyester resin composites, considering multiple attributes with the assistance of the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). The experiment consisted of producing unsaturated polyester composites reinforced by jute yarn, arranged in the form of fabric in plan style. The attributes considered were porosity, tensile strength, costs, reduction of volatile emissions, and social perspective. Shannon’s entropy was applied to determine attributes weights objectively. HLU was selected as the benchmark because it is considered the conventional process. The results obtained show that reduction of volatile emissions and tensile strength were the weightiest attributes, the VIP was the best choice, and TOPSIS was appropriate for the problem analysis.

Keywords

Vacuum infusion process; TOPSIS; Entropy; Composite; Jute yarn.

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Submetido em:
28/05/2019

Aceito em:
15/05/2020

60c0fefba95395390160e023 tmm Articles
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