Jiefei Qiu


This thesis develops a methodology that integrates Quality Function Deployment (QFD), Theory of Inventive Problem Solving (TRIZ) and Design Structure Matrix (DSM) to address the problem of analyzing, interpreting, and transforming the knowledge data flow during the product development process.

A product development process is the sequence of steps an enterprise takes to conceive, design, and commercialize a product. The general process includes: Planning, Concept Development, System-Level Design, Detail Design, Testing and Refinement, and Production Ramp-Up. One way to think about the development process is as a knowledge-processing system.

Prior to this study, there are few articles integrating TRIZ and QFD. QFD is a tool for "identifying the needs of the customer and translating the language of the customer into the language of the engineer". The QFD process also identifies engineering contradictions within the existing system. TRIZ can provide solutions for these contradictions. It offers one of the most efficient means to generate creative solutions for the desired improvements prioritized in QFD. Once a creative solution is developed using TRIZ, the corresponding part characteristics can be further decomposed using QFD.

If we think of knowledge-processing as a work process, then both rework and iterative design requires additional project resources and time. Iteration is the repetition of activities due to the input of new information. DSM is an effective tool to plan and manage product development processes through information flow analysis by helping managers understand and mitigate unintentional rework or iteration.

Library of Congress Subject Headings

New products--Management; Creative thinking; Technological innovations--Management; Problem solving--Methodology; Quality function deployment

Publication Date


Document Type


Department, Program, or Center

Industrial and Systems Engineering (KGCOE)


Paul Stiebitz

Advisor/Committee Member

Edward Hensel


"I, Jiefei Qiu, hereby deny permission to the RIT Library of the Rochester Institute of Technology to reproduce my print thesis or dissertation in whole or in part."

Physical copy available from RIT's Wallace Library at TS156 .Q58 2005


RIT – Main Campus