Quantification of Weights of Voices of Customer and Environment in QFD for Environment

Quality function deployment for environment(QFDE) is an effective green design method for transforming voices of customer and environment(VoCE) into engineering characteristics for new product development.Because of uncertainty and complexity of VoCE,a new planning process is added into QFDE to analyze VoCE and rank them with appropriate weights.The weights of VoCE are evaluated with fuzzy interval values firstly.Then the fuzzy preference programming method is applied to convert the fuzzy weights into precise ones for meeting the computation requirements of the house of quality in the QFDE.A case study illustrates the implementation process and feasibility of the method proposed.