A Grey Relation Approach to the Integrated Process of QFD and QE

Abstract

During the process of concurrent design, a designer must focus on meeting the changing requirements of customers and reacting to the rapid decrease of the life-cycle of the product in a dynamic market. However, the cost induced by the quality delinquent and aftermarket service is a critical factor in the enterprise profit. This research proposes a product design methodology that integrates the grey relation approach to quality function deployment (QFD) and quality engineering (QE) to solve the problem. It is noted that the process increases customer satisfaction and enhances product quality in response to global competition. Based on the results of systematic market research performed on customer requirements ( CRs), the hierarchical clustering technique and grey theory have been applied to identify, categorize, and evaluate CRs to rank their grey relational importance. The critical design characteristics ( DCs) have been identified using QFD, which applies the semantic differential method on the relationship matrix cell to evaluate their relationship with CRs. The selected DCs are then evaluated to determine noise and possible loss of quality using the orthogonal experiment of the Taguchi method. The objective of the optimization process is to integrate QFD and QE into the development process and to optimize the quality of product development. With support from a timer manufacturer, six existing products have been selected to demonstrate the applicability of the approach described above. This robust product design process provides encouraging evidence for a new approach that can improve quality, reduce variation, and increase customer satisfaction and enterprise profit.

Environment Systems: A New Concept on Cremation

“…Thus to generate service specifications, the Quality Function Deployment (QFD) was applied that is an efficient approach for dealing with the voice of the customers and their needs [18,19]. This can be considered as an innovative management tool structured by matrices representing the relationships between characteristics of products and services in the "Quality house" format [20].…”

Product form design model based on the robust posterior preference articulation approach

“…An orthogonal array is a fractional factorial matrix that can balance any design variable and the interaction between design variables. The Taguchi method uses the smallest possible orthogonal array to investigate the entire parameter space by using only few experimental samples, and thus can simply the experimental design (Chen et al, 2011). The S/N ratio represents a quality characteristic.…”

An Integrated Musculoskeletal Motion Analysis and Quality Function Deployment in Lower Limb Leisure Exercise Product Design

“…It is noted that the task needs to do in the employment of quality function deployment is the construction of the house of quality [10]. In constructing the house of quality, the research followed the general steps for the development of a house of quality [10][11].…”

“…In this research, 12 customer requirement attributes are considered based on the result of factor analysis. They are (1) functional display, (2) simplified function, (3) complex function, (4) stability, (5) pressure endurance, (6) repeated operation, (7) adjustable structure, (8) disassembly, (9) easy movement, (10) easy adjustment, (11) The research invited 15 voluntary tested subjects to make a paired comparison evaluation on these 12 user requirement attributes. The 15 voluntary tested subjects include 8 male and 7 female people whose ages range between 25 and 35 years.…”