Diamond is the hardest natural material and an allotrope of carbon. Because of its high hardness and wear resistance, diamond has a long tradition of being used as cutting material for hard and brittle materials such as cemented carbides, titanium, ceramics, cast iron, stone or diamond itself. This seminar explains the structure and physical properties of diamond and discusses the two origins of diamond – natural genesis and artificial synthesis. Resulting from the crystal structure, diamond is an anisotropic material which shows varying hardness and cleavage behavior in the different crystal planes. Monocrystalline diamond is used for cutting of mirror-like surfaces, but more importantly diamond is used in the form of abrasive grits in grinding, polishing or lapping operations. Polycrystalline material has been invented to overcome the anisotropy of diamond and is applied for cutting tools or in oil drilling operations. The presenter will show different applications of diamond tools including tribological studies from her PhD thesis on grinding tool conditioning with diamonds. Diamond is a fascinating material which remains highly important for manufacturing.
About the Speaker
Barbara Linke got her diploma and doctorate in mechanical engineering at the RWTH Aachen University, Germany. She worked with Prof. Fritz Klocke at the Laboratory for Machine Tools and Production Engineering WZL from 2002 – 2010 on grinding technology and tooling engineering. Her PhD thesis was about dressing of vitrified bonded grinding tools. From 2010 – 2012, Barbara was a research fellow at the University of California Berkeley at Prof. David Dornfeld’s lab with a research grant from the German Research Foundation (DFG). She focused on the life cycle and sustainability of abrasive tools. Since November 2012, Barbara has been an assistant professor at the University of California Davis. She is the director of the Sustainable Manufacturing Technologies Laboratory (SMaT) and her research interests are sustainable manufacturing and abrasive machining technologies. Barbara received the F.W. Taylor Medal of the CIRP in 2009 and the Outstanding Young Manufacturing Engineer award of the SME in 2013.
Date(s) - 04/24/2014
4:10 pm - 5:00 pm
1062 Bainer Classroom