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Thermal diffusivity maps: Case studies in ceramics

Published online by Cambridge University Press:  31 January 2011

Lanhua Wei
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Grady S. White
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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Abstract

A new methodology for mapping thermal diffusivity using a photothermal deflection method is introduced. Two case studies are made: fiber-reinforced composite structures and contact damage zones in alumina. In the former, characterization of thermal microstructural features is demonstrated; in the latter, microcrack density is quantified. Experimental data are analyzed and compared with literature results. Advantages and limitations of the technique are discussed.

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Copyright
Copyright © Materials Research Society 1997

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