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Materials Characterization and Diagnosis Using Variable Frequency Microwaves

Published online by Cambridge University Press:  10 February 2011

J. Billy Wei ,
Zak Fathi ,
Denise A. Tucker ,
Michael L. Hampton ,
Richard S. Garard  and
Robert J. Lauf
J. Billy Wei
Affiliation:
Lambda Technologies, Inc., 8600 Jersey Court, Suite C, Raleigh, NC
Zak Fathi
Affiliation:
Lambda Technologies, Inc., 8600 Jersey Court, Suite C, Raleigh, NC
Denise A. Tucker
Affiliation:
Lambda Technologies, Inc., 8600 Jersey Court, Suite C, Raleigh, NC
Michael L. Hampton
Affiliation:
Lambda Technologies, Inc., 8600 Jersey Court, Suite C, Raleigh, NC
Richard S. Garard
Affiliation:
Lambda Technologies, Inc., 8600 Jersey Court, Suite C, Raleigh, NC
Robert J. Lauf
Affiliation:
ORNL, Oak Ridge, TN
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Abstract

Product quality control is a crucial part of manufacturing and usually involves materials characterization and diagnosis. Though various microwave assisted nondestructive evaluation (MA-NDE) systems have been fabricated for materials inspection, none of the systems can be applied to materials within a mold or reactor. A broadband variable frequency microwave based, resonant mode MA-NDE was studied as an alternative for characterization of materials within a cavity. The main advantage of the resonant mode MA-NDE are non-intrusive and volumetric diagnosis of the material inside a mold. The principles and possible applications of the resonant mode MA-NDE are discussed. Resonant mode MA-NDE was fully demonstrated by using Vani-Wave to trace material status during microwave curing of Diglycidyl Ether of Bisphenol A (DGEBA)/Diaminodiphenylsulphone (DDS) epoxy samples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 430: Symposium O – Microwave Processing of Materials V , 1996 , 73
Copyright
Copyright © Materials Research Society 1996

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