October 1997 Fibrous Monolithic Ceramics 2487 Desiderio Kovar received his B.s. degree in materials science and engineering from the University of California, Berkeley, and his M.S. and Ph. D. degrees cience and engineering from Carnegie Mellon University. He spent two years at the University of Michigan as a postdoctoral research fellow, where he studied the mechanical behavior of layered ceramics. His other research interests include fracture f toughened ceramics, mechanical reliability of ceramics and ceramic cor nd interfacial fracture. Presently, Dr. Kovar is an Assistant Professor of cience and engineering in the Mechanical Engineering Department at the Un of Texas at Austin Bruce King received his B.S. degree in materials engineering from the University of Alabama at Birmingham in 1991. In 1994, he received his M.S. degree in materials cience from the University of Michigan, where he developed a process for producing polycrystalline YAG fibers. Since 1994, he has been investigating various aspects of fibrous monolithic ceramics, including mechanical behavior and processing. Dr King recently received his Ph D. degree in materials science from the University of Michi- gan and has accepted a postdoctoral position in the Direct Fabrication Department at Sandia National Laboratory Rodney Trice is a doctoral candidate in the Department of Materials Science and Engineering at the University of Michigan. He received his B.S. degree in mechanical engineering and M.S. degree in materials science from the University of Texas at Arlington. From 1988 to 1995. Mr. Trice worked with Lockheed Martin and then Northrop Grumman, characterizing the mechanical properties of radar-absorbing ma- terials. His research interests include processing and characterizing structural ceram- ics, with an emphasis on transmission electron microscopy studies and mechanical property determinations. Currently, Mr. Trice is investigating the high-temperatur properties of boron nitride/silicon nitride fibrous monoliths with fast-fracture tests and interfacial fracture energy measurements. He will receive a Ph. D. degree in John Halloran is a Professor of Materials Science and Engineering at the University f Michigan. He received a B.S. degree from the University of Missouri-Rolla ceramic engineering in 1973, and a Ph. D. degree in materials science from Massa- chusetts Institute of Technology in 1977. Before coming to the University of Michi- gan in 1990, Dr. Halloran was with an entrepreneurial company(CPS Superconduc- tors and Ceramic Process Systems Corp )in the Boston area. His previous faculty ositions have been at the Pennsylvania State University(1976-1980) and Case Western Reserve University(1980-1985. His current research focuses on ceramic processing, structural ceramics, free-form fabrication, and novel microfabrication.Desiderio Kovar received his B.S. degree in materials science and engineering from the University of California, Berkeley, and his M.S. and Ph.D. degrees in materials science and engineering from Carnegie Mellon University. He spent two years at the University of Michigan as a postdoctoral research fellow, where he studied the mechanical behavior of layered ceramics. His other research interests include fracture of toughened ceramics, mechanical reliability of ceramics and ceramic composites, and interfacial fracture. Presently, Dr. Kovar is an Assistant Professor of materials science and engineering in the Mechanical Engineering Department at the University of Texas at Austin. Bruce King received his B.S. degree in materials engineering from the University of Alabama at Birmingham in 1991. In 1994, he received his M.S. degree in materials science from the University of Michigan, where he developed a process for producing polycrystalline YAG fibers. Since 1994, he has been investigating various aspects of fibrous monolithic ceramics, including mechanical behavior and processing. Dr. King recently received his Ph.D. degree in materials science from the University of Michi￾gan and has accepted a postdoctoral position in the Direct Fabrication Department at Sandia National Laboratory. Rodney Trice is a doctoral candidate in the Department of Materials Science and Engineering at the University of Michigan. He received his B.S. degree in mechanical engineering and M.S. degree in materials science from the University of Texas at Arlington. From 1988 to 1995, Mr. Trice worked with Lockheed Martin and then Northrop Grumman, characterizing the mechanical properties of radar-absorbing ma￾terials. His research interests include processing and characterizing structural ceram￾ics, with an emphasis on transmission electron microscopy studies and mechanical property determinations. Currently, Mr. Trice is investigating the high-temperature properties of boron nitride/silicon nitride fibrous monoliths with fast-fracture tests and interfacial fracture energy measurements. He will receive a Ph.D. degree in December 1997. John Halloran is a Professor of Materials Science and Engineering at the University of Michigan. He received a B.S. degree from the University of Missouri–Rolla in ceramic engineering in 1973, and a Ph.D. degree in materials science from Massa￾chusetts Institute of Technology in 1977. Before coming to the University of Michi￾gan in 1990, Dr. Halloran was with an entrepreneurial company (CPS Superconduc￾tors and Ceramic Process Systems Corp.) in the Boston area. His previous faculty positions have been at the Pennsylvania State University (1976–1980) and Case Western Reserve University (1980–1985). His current research focuses on ceramic processing, structural ceramics, free-form fabrication, and novel microfabrication. October 1997 Fibrous Monolithic Ceramics 2487