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Title: Thermal imaging measurement of lateral thermal diffusivity in continuous fiber ceramic composites

Abstract

Infrared thermal imaging has become a common technique for nondestructive evaluation and measurement of thermal properties in ceramic specimens. Flash thermal imaging can be used to determine two-dimensional through-thickness thermal diffusivity in a planar specimen. In this study, the authors extended the method to determine lateral, or transverse, thermal diffusivity in the specimen. During the flash thermal imaging test, pulsed heat energy is applied to a specimen's back surface, which is partially shielded, and the change of temperature distribution on the front surface is monitored by an infrared thermal imaging system. The temperature distribution represents the effect of both the normal heat transfer through the specimen's thickness and the lateral heat transfer through the interface between the shielded and unshielded back-surface regions. Those temperature distributions are then fitted with a theoretical solution of the heat transfer process to determine the lateral thermal diffusivity at the interface. This technique has been applied to measure lateral thermal diffusivity in a steel plate and a continuous fiber ceramic composite specimen.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
751846
Report Number(s):
ANL/ET/CP-99750
TRN: AH200018%%380
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 24th Annual Cocoa Beach Conference, Cocoa Beach, FL (US), 01/23/2000--01/28/2000; Other Information: PBD: 18 Feb 2000
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; COMPOSITE MATERIALS; CERAMICS; INFRARED THERMOGRAPHY; NONDESTRUCTIVE TESTING; THERMAL DIFFUSIVITY; STEELS

Citation Formats

Sun, J G, Deemer, C, and Ellingson, W A. Thermal imaging measurement of lateral thermal diffusivity in continuous fiber ceramic composites. United States: N. p., 2000. Web.
Sun, J G, Deemer, C, & Ellingson, W A. Thermal imaging measurement of lateral thermal diffusivity in continuous fiber ceramic composites. United States.
Sun, J G, Deemer, C, and Ellingson, W A. Fri . "Thermal imaging measurement of lateral thermal diffusivity in continuous fiber ceramic composites". United States. https://www.osti.gov/servlets/purl/751846.
@article{osti_751846,
title = {Thermal imaging measurement of lateral thermal diffusivity in continuous fiber ceramic composites},
author = {Sun, J G and Deemer, C and Ellingson, W A},
abstractNote = {Infrared thermal imaging has become a common technique for nondestructive evaluation and measurement of thermal properties in ceramic specimens. Flash thermal imaging can be used to determine two-dimensional through-thickness thermal diffusivity in a planar specimen. In this study, the authors extended the method to determine lateral, or transverse, thermal diffusivity in the specimen. During the flash thermal imaging test, pulsed heat energy is applied to a specimen's back surface, which is partially shielded, and the change of temperature distribution on the front surface is monitored by an infrared thermal imaging system. The temperature distribution represents the effect of both the normal heat transfer through the specimen's thickness and the lateral heat transfer through the interface between the shielded and unshielded back-surface regions. Those temperature distributions are then fitted with a theoretical solution of the heat transfer process to determine the lateral thermal diffusivity at the interface. This technique has been applied to measure lateral thermal diffusivity in a steel plate and a continuous fiber ceramic composite specimen.},
doi = {},
url = {https://www.osti.gov/biblio/751846}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {2}
}

Conference:
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