Professor David W. Rosen
The George W. Woodruff School of Mechanical Engineering,
Georgia Institute of Technology,
Digital Manufacturing and Design Centre
Singapore University of Technology & Design
Design for manufacturing (DFM) methods aid designers in understanding manufacturing constraints and proposing small geometry changes to avoid those constraints. However, with the development of additive manufacturing (AM), and advances in polymer composites and other processes, designers have tremendous freedoms to design devices that are geometrically complex, have complex material and property distributions, and perform multiple functions. As such, methods and technologies are needed that enable designers to go beyond traditional, restrictive DFM and achieve “opportunistic DFM.” In this context, the capability to predict the effects of the manufacturing process on the material for specific part feature shapes is critically important, since these effects directly contribute to local physical properties. In this talk, I propose the idea of simultaneous product-material-process design as the framework for design methods that consider these effects. From a design perspective, a fundamental need is to integrate materials information, specifically process-structure-property relationships, in order to determine if desired spatial distributions of properties are feasible given a material and a manufacturing process. I discuss computer-aided design (CAD) technologies that enable the representation of material and property information in CAD models. Several optimization methods are presented that optimize shape, material distributions, and manufacturing process considerations. Progress towards simultaneous product-material-process design is illustrated with several examples.
David Rosen is a Professor in the School of Mechanical Engineering at the Georgia Institute of Technology (on leave). Additionally, he is the Research Director of the Digital Manufacturing and Design Centre at the Singapore University of Technology & Design. He received his Ph.D. at the University of Massachusetts in mechanical engineering. His research interests lie at the intersection of design, manufacturing, and computing with specific focus on additive manufacturing (AM), computer-aided design, and design methodology. He has industry experience, working as a software engineer at Computervision Corp. and a Visiting Research Scientist at Ford Research Laboratories. He is a Fellow of ASME and has served on the ASME Computers and Information in Engineering Division Executive Committee. He is the recipient of the 2013 Solid Freeform Fabrication Symposium, International Freeform and Additive Manufacturing Excellence (FAME) Award and the co-author of a leading textbook in the AM field.
For opportunities to meet with the speaker, please contact Prof. Kevin Connington ([email protected])