Özet:

Technology is developing rapidly and customers’ ergonomic expectations from products are increasing from day to day in today’s competitive market. Therefore, customer demands and ergonomic restrictions play an important role in product design. Due to the constant change in customer needs, the importance of ergonomic product design has gained importance compared to the previous years. With the development of technology and the constant change in customer needs, the product life cycle time is shortened today. Due to the shrinking of the product life cycle time, the decrease in the cost of the ergonomic product design and the shrinking of the ergonomic product design time become important. To reduce the cost of ergonomic product design and shorten its time, need to focus on choosing among the best concept alternative concepts. Therefore, choosing the best product concept is the most important step in product design. Because customers express their thoughts about the product in the language, it is quite difficult to evaluate ergonomic product concepts using methods using precise values at this stage. Intuitive blurry is an effective approach to reflect the language preferences of decision makers because it is shown by membership, membership, and hesitation index. In this study, it was suggested to expand the TOPSIS method, which is recently a popular method in the multi-criteria group decision-making literature for the choice of the phone that is ergonomically suitable among alternatives, to the intuitive foolish environment. When the achieved outcome is examined, it appears that the recommended method in the ergonomic product design effectively addresses the uncertainty caused by user's linguistic expressions and is a decision-making method that designers can use to choose the most suitable concept among alternative concepts.

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