Expert Details

Expert in Ceramics: Fabrication, Fracture, Powder Dispersion, Alumina, Nano-materials; Tapecasting, Creep, Sintering

Expert ID: 712373 Idaho, USA

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Expert has been involved in ceramic processing since 1973. He served as a member of the research staff of the MIT Ceramic Processing Center. He has taught a graduate course at Rutgers University entitled "Colloid Chemistry of Slip Casting" since 1985, and has taught a portion of the Center for Professional Advancement Course on Organic Additive for Ceramic Processing since 1986. Since 1982, he has directed research on tape casting of ceramics and ceramic dispersion in non-aqueous systems (with three PhD papers and one masters thesis on the subject).

Expert was in charge of the mechanical testing facility at Rutgers Center for Ceramic Research. This included universal testing machines, hardness testers, creep machines, static fatigue, and continuous feed high temperature testing. He has also taught the basic graduate level mechanical properties of ceramics course from 1982 to 2007. He can answer in-depth questions regarding ceramic toughness, static fatigue, and impact energy.

Expert's Ph.D thesis was on the subject of creep of aluminum oxide. He has published two extensive review articles on creep of ceramics in the Journal of Material Science. Currently, he directs a thesis on the topic of creep of silicon nitride and superplasticity of zirconia nanocrystalline composites.

Expert has taught three short courses on the subject of ceramic-ceramic composites. He has studied the effect of bridging by fibers and whiskers on the stress intensity factor at the crack tip. In order to do this he developed a new technique using a Raman microscope to measure stresses at the crack tip.

After retirement Expert consulted regularly with Idaho National Laboratory on improved processing of fuel pellets. He studied isostatic pressing of ceria as a surrogate for nuclear fuels. He also developed a model for calculating green strength of pellets.

Much of Expert's career has been spent in powder processing. He has directed many studies which used particle size distribution measurements, zeta potential measurements and rheology of slips measurements.

Expert's experience with binders is largely with tape casting binders and plasticizers. He has studied the interaction between them, the effect of water, their ability to act as a dispersant, their ability to impart strength (tested tensile specimens) and their burnout qualities.

Expert has lead an effort to fabricate composites by infiltrating blackglas@ with inert and active fillers into woven Nextel 320 fibers. He has tested the following mechanical properties: tensile, bending, compression and shear strength at room temperature, elastic modulus and creep.

Several of Expert's students have studied tape casting of alumina substrates.

Starting with his own Ph.D thesis he has made creep studies (with his students) numerous times. He has studied creep of superplastic materials, silicon nitride, fiber composites, YAG and nano-alumina/zirconia.

Expert and students have made ASTM standard bending tests for individual industrial sponsors. Expert has directed a student in making hydraulic burst and ball on ring fracture tests and studied the Weibull distributions and shape factors.

He has directed a student in Weibull statistics measurements. He has taught techniques for analyzing the statistics and time dependent behavior and has initiated such an effort with a company for which he consults to improve reliability.

Expert has taught colloidal chemistry as it is applied to dispersion of ceramic powder. He has directed several theses on the subject and consulted with industry on this subject.

During his last few years at Rutgers University he studied sintering. One of his students defended her thesis on the subject sintering parameter measurement for silicon nitride. She studied second stage liquid phase sintering. Two students have studied anisotropy during sintering. He have filed a patent disclosure for a method of reducing or eliminating anisotropy.

For almost his entire career Expert has lead graduate student research in tape casting and is widely sited in the literature on the subject. This research has included organic additive, the effect of water in non-aqueous systems, aqueous tape casting, anisotropic shrinkage, defects, and aqueous and non-aqueous dispersants.

While at MIT Expert synthesized silicon nitride by a laser heating method and studied sintering of silicon and silicon nitride. At Rutgers he studied carbothermal reduction and nitridation of silicon nitride powder, One student studied creep and another sintering of silicon nitride.

Is a regular consultant for Idaho National Laboratory on the topic of ceramic processing of reprocessed nuclear fuel (MOX).Recently helped a company establish a program for evaluating statistical and time dependent failure of glass parts. Has consulted on tape casting and organic additives towards better dispersion of powder.

Expert may consult nationally and internationally, and is also local to the following cities: Pocatello, Idaho - Idaho Falls, Idaho

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Education

Year Degree Subject Institution
Year: 1971 Degree: PhD Subject: Materials Science/Ceramics Institution: Stanford University
Year: 1967 Degree: MS Subject: Materials Science Institution: Stanford University
Year: 1965 Degree: BS Subject: Ceramic Engineering Institution: University of Utah

Work History

Years Employer Title Department Responsibilities
Years: 2007 to 2015 Employer: Idaho National Laboratory Title: Consultant Department: Responsibilities: Consulted on a regular basis, approximately once a week. LDRD project concerned the development of improved nuclear fuel processing.
Years: 1980 to 2007 Employer: Rutgers University Title: Professor II (Distiguished) Department: Materials Science/Ceramics Responsibilities: He served as Graduate Director 1993-2002 and as Vice Chair 2002-2006.
Years: 1976 to 1980 Employer: MIT Title: Research Associate Department: Materials Science/Ceramic Division-Energy Lab Responsibilities: Research staff:
MHD electrode study
Co-PI DOD Laser Synthesis of Powders
Years: 1974 to 1976 Employer: TRW Title: Research Staff Department: Responsibilities: Sodium Sulfur Batteries
Years: 1972 to 1974 Employer: University of Utah Title: Research Associate Department: Materials Science Department Responsibilities: For one year, he taught a course. In his second year, he was a Research Associate studying sodium sulfur batteries.

Career Accomplishments

Associations / Societies
Expert is a Fellow of the American Ceramic Society and has organized and chaired sessions of meetings.
He has been on the international organizing committee of several conferences, including Sintering 2008.
Professional Appointments
Expert has served as an editor for communications of the American Ceramic Society.
Awards / Recognition
One of Expert's students received the outstanding thesis award at Rutgers and the Wigner award for a fellowship to Oak Ridge National Laboratory (first one ever awarded to the high temperature laboratory)
Publications and Patents Summary
Expert has an excess of one hundred publications in books and journals. He holds two patents

Additional Experience

Expert Witness Experience
He has been involved in one liability case as an expert witness. The case was settled prior to going to court.
Training / Seminars
Expert taught the graduate course in mechanical properties of ceramics (25 yrs), graduate course in colloidal chemistry in ceramic system (10 yrs), graduate course in High Temperature Materials (3 yrs), part of graduate Course in Thermodynamics, and several undergraduate courses in ceramics including laboratory courses.
He participated in teaching at the Center for Professional Advancement courses for approximately ten years both in the US and Europe. These included Organic Additives, New Technologies in Ceramics, etc.
Directed: Sintering of Ceramics Course for the American Ceramic Society. He has also taught o courses at the University of Wisconsin and for the Army.
Vendor Selection
Expert participated with graduate students in locating vendors.
Marketing Experience
Expert has consulted for numerous companies both in ceramic processing and mechanical properties.
Other Relevant Experience
Expert has interacted with companies who sponsored his research.

Language Skills

Language Proficiency
German Expert spoke fluent German after spending 2 1/2 years at age 20-23 in Germany. He still can speak and understand German well.

Fields of Expertise

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