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Determining the importance ratings of customer requirements in quality function deployment based on interval linguistic information

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  • Yan-Lai Li
  • Yin-Feng Du
  • Kwai-Sang Chin

Abstract

Quality function deployment (QFD) is a customer-oriented tool and is widely applied to design and improve products and services. Determining the importance ratings (IRs) of customer requirements (CRs) is an essential step in QFD application and will affect the quality of product design and improvement. In this study, a group decision-making method is proposed to obtain realistic IRs. Low-carbon environment is considered in recognising CRs. Interval linguistic information (ILI) is used to express the vague evaluations in product improvement. In addition, an interval linguistic weighted arithmetic averaging operator, a normalised formula, and an expected value operator are integrated to deal with evaluation matrices expressed by ILI. A relationship matrix is used reversely to acquire accurate basic IRs (BIRs). The improved cosine method based on ILI is also employed to derive BIRs. The modified entropy method based on ILI is proposed to determine a competitive priority rating (CPR) of a CR. The final IR of every CR can be obtained by integrating its BIR and CPR. Finally, a practical product improvement of turbine engine is provided to illustrate the validity and feasibility of the proposed approach.

Suggested Citation

  • Yan-Lai Li & Yin-Feng Du & Kwai-Sang Chin, 2018. "Determining the importance ratings of customer requirements in quality function deployment based on interval linguistic information," International Journal of Production Research, Taylor & Francis Journals, vol. 56(14), pages 4692-4708, July.
    • Handle: RePEc:taf:tprsxx:v:56:y:2018:i:14:p:4692-4708
    DOI: 10.1080/00207543.2017.1417650
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    Cited by:

    1. Dominika Siwiec & Andrzej Pacana, 2021. "A Pro-Environmental Method of Sample Size Determination to Predict the Quality Level of Products Considering Current Customers’ Expectations," Sustainability, MDPI, vol. 13(10), pages 1-22, May.
    2. Hamid Reza Fazeli & Qingjin Peng, 2023. "Integrated approaches of BWM-QFD and FUCOM-QFD for improving weighting solution of design matrix," Journal of Intelligent Manufacturing, Springer, vol. 34(3), pages 1003-1020, March.
    3. Yinfeng Du & Dun Liu, 2021. "A novel approach to relative importance ratings of customer requirements in QFD based on probabilistic linguistic preferences," Fuzzy Optimization and Decision Making, Springer, vol. 20(3), pages 365-395, September.
    4. Jia Huang & Ling-Xiang Mao & Hu-Chen Liu & Min-shun Song, 2022. "Quality function deployment improvement: A bibliometric analysis and literature review," Quality & Quantity: International Journal of Methodology, Springer, vol. 56(3), pages 1347-1366, June.

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