The sixth edition of Engineering Design continues its tradition of being more oriented to material selection, design for manufacturing, and design for quality than other broad-based design texts. The text is intended to be used in either a junior or senior engineering design course with an integrated, hands-on design project. At the University of Maryland, we (the authors) present the design process material, Chapters 1 through 9, to junior students in a course introducing the design process. The whole text is used in the senior capstone design course that includes a complete design project, starting from selecting a market to creating a working prototype. Our intention is that students will consider this book to be a valuable part of their professional library. Toward this end we have continued and expanded the practice of giving key literature references and referrals to useful websites.