Expert Details

Expert in Optical Fiber Mechanical Properties and Reliability

Expert ID: 723652 New Jersey, USA

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He is currently co-authoring a completely revised edition of Mechanical Properties of Ceramics. His contributions are primarily concerned with the mathematical basics of mechanical behavior as well as statistical and stress corrosion aspects of strength.

He has developed computational models for modeling various aspects of sintering.

One model simulates the transport of gas through the porous green body. In particular, the model looks at the removed of SiO2 from SiC by gas phase transport, primarily via CO, during a hold at an intermediate temperature at the start of the sintering cycle. The model can be used to predict optimum hold times and temperatures as a function of the properties of the green body. While sed for SiC the model can be used to model other gas phase transport phenomena, including drying or porous bodies and binder removal.

A second model uses finite element (FE) analysis to simulate the stresses and deformations that occur during densification / sintering. The model essentially involved coding a visco-plastic sintering element for the ABAQUS package. Model was successfully applied to predict the distortions of multilayer, multi-material ceramic structures, such as LTCC materials. However, it can also be used to predict the behavior of single material monoliths with, for example, non-uniform distributions of temperature, density, particle size, etc.

With over 20 years experience in the field of optical fiber reliability, Expert has published over 100 papers on the topic. Much of his work has been concerned with the fundamentals of the fatigue process. He has also developed mechanical testing techniques and mathematical descriptions of the stresses and statistical aspects of the tests, with specific application to optical fiber and fiber components. He has also developed mathematical models for predicting long-term reliability as a function of applied stress and service environment.

Expert has chaired or co-chaired more than 5 international conferences on the topic of fiber reliability.


Expert helped a company well-known in the fiber optics industry establish a laboratory with extensive mechanical testing capabilities. This involved construction of bending and uniaxial tension testing equipment, static fatigue testing equipment, etc. Expert has helped several fiber optics manufacturer assure the reliability of their products. This involved making industry standard tensile and bending strength and fatigue measurements and then using the results to predict the lifetime under stress in a variety of environments.

Expert may consult nationally and internationally, and is also local to the following cities: New York, New York - Yonkers, New York - Newark, New Jersey - Jersey City, New Jersey - Paterson, New Jersey - Elizabeth, New Jersey - Bridgeport, Connecticut - New Haven, Connecticut - Stamford, Connecticut - Philadelphia, Pennsylvania

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Education

Year Degree Subject Institution
Year: 1975 Degree: BA Subject: Natural Sciences (Theoretical Physics) Institution: University of Cambridge, UK
Year: 1978 Degree: MA Subject: Natural Sciences (Physics) Institution: University of Cambridge, UK
Year: 1978 Degree: PhD Subject: Materials Science & Physics Institution: University of Cambridge, UK

Work History

Years Employer Title Department Responsibilities
Years: 1989 to Present Employer: Undisclosed Title: Professor Department: Materials Science and Engineering Responsibilities: Expert heads a research group with two main areas of interest: (i) mechanical bahvior and reliability of optical fibers (ii) computational modeling of the sintering process. He has a research lab with extensive equipment for strength and fatigue testing of optical fibers. He can also build a variety of test equipment for custaomers - the equipment is complaint with all current telecom industry standard test procedures.
Years: 1986 to 1988 Employer: IBM Title: Senior Advisory Engineer Department: Almaden Research Laboratory, CA Responsibilities: Expert studied a variety of reliability issues for computer hard drives.
Years: 1984 to 1986 Employer: AT&T Bel Laboratories Title: Postdoctoral Member of Technical Staff Department: Murray Hill Responsibilities: He performed research on the strength and fatigue of optical fibers.
Years: 1981 to 1984 Employer: University of Cambridge Title: Computer Officer Department: Computing Service Responsibilities: Consultant for Cambridge Unoiversity personnel on applications of microcomputers.
Years: 1978 to 1981 Employer: University of Cambridge Title: Goldsmiths Junior Research Fellow Department: Churchill College Responsibilities: Researcher in the Cavendish Laboratory, Department of Physics, working on high speed impact and mechanical propoeties of materials.

Career Accomplishments

Associations / Societies
American Ceramic Society,
SPIE
Licenses / Certifications
Chartered Physicist (IoP)
Awards / Recognition
Expert has received three awards for excellence in teaching while at Rutgers University.
Publications and Patents Summary
He has published over 100 papers, has contributed chapters to several books and holds one patent. He is currently coauthoring a totally revised second edition of the book, Mechanical Behavior of Ceramics.

Additional Experience

Training / Seminars
Expert has developed a half or full day course on the reliability of optical fiber. The course has been presented at several times at international meetings and conferences and at customers' premises.
Marketing Experience
Expert builds and sells instruments for mechanical testing of optical fiber. These instruments are in use in research and quality assurance laboratories around the world.
Other Relevant Experience
Expert in mechanical testing of glasses and optical fibers. This includes building specialized instruments for strength and fatigue measurement. The results of such testing can be used to make lifetime predictions under a variety of stress and environmental conditions.

Language Skills

Language Proficiency
French Weak

Fields of Expertise

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