An Interval Valued Pythagorean Fuzzy AHP–TOPSIS Integrated Model for Ergonomic Assessment of Setup Process under SMED

Yildiz Kose, Hatice Nida Civan, Ertugrul Ayyildiz and Emre Cevikcan ()
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Yildiz Kose: Department of Industrial Engineering, Management Faculty, Istanbul Technical University, Istanbul 34367, Turkey
Hatice Nida Civan: Department of Industrial Engineering, Management Faculty, Istanbul Technical University, Istanbul 34367, Turkey
Ertugrul Ayyildiz: Department of Industrial Engineering, Karadeniz Technical University, Trabzon 61080, Turkey
Emre Cevikcan: Department of Industrial Engineering, Management Faculty, Istanbul Technical University, Istanbul 34367, Turkey

Sustainability, 2022, vol. 14, issue 21, 1-30

Abstract: Single-minute exchange of dies (SMED) is one of the most significant lean tools which reduces the required time for setup operations. The consideration of appropriate ergonomic interferences during the SMED implementation improves working conditions, productivity, and flexibility. The SMED literature has an opportunity for expansion with ergonomic assessment. Moreover, ergonomic assessment studies have various limitations in terms of a broad hierarchy of ergonomic factors and their weighting. Therefore, this study enriches the literature by providing the ergonomic assessment of the setup process through integrating multi-criteria decision-making (MCDM) into SMED. In this context, a wide hierarchy of ergonomic risk factors is compiled for ergonomic assessment. The Interval Valued Pythagorean Fuzzy Analytic Hierarchy Process (IVPF-AHP) method is used to determine the weights of factors. Then, Fuzzy Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is used to prioritize setup tasks in terms of ergonomic factors by using the Interval Valued Pythagorean Fuzzy Sets (IVPFSs). The proposed model was validated by applying it to a real-life manufacturing system in the white goods supplier industry. The application results justify the proposed model with a setup time reduction of 58% and an ergonomic improvement of 19%.

Keywords: SMED; ergonomics; human factors; Pythagorean fuzzy numbers; AHP; TOPSIS (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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