David GrewellDavid Grewell received a BS, MS and PhD in Welding Engineering from The Ohio State University with minors in biomedical engineering and polymer processing in 1989, 2002 and 2005, respectively. He holds 14 patents and has published 50 journal, nearly 00 refereed conference papers, two books and has been an invited lecture to 7 international conferences. He is a Society Fellow within the Society of Plastic Engineers. His interests include bio-fuels, bio-materials, joining of plastics, micro-fabrication and laser processing of materials. He is currently at Iowa State University as a Professor in the department of Agricultural and Biosystems Engineering and has courtesy appointments with the Material Science and Engineering Department as well as at Erlangen University in Germany Read More Read Less