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Proceedings Paper

Heat induced damage detection in composite materials by terahertz radiation
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Paper Abstract

In recent years electromagnetic Terahertz (THz) radiation or T-ray has been increasingly used for nondestructive evaluation of various materials such as polymer composites and porous foam tiles in which ultrasonic waves cannot penetrate but T-ray can. Most of these investigations have been limited to mechanical damage detection like inclusions, cracks, delaminations etc. So far only a few investigations have been reported on heat induced damage detection. Unlike mechanical damage the heat induced damage does not have a clear interface between the damaged part and the surrounding intact material from which electromagnetic waves can be reflected back. Difficulties associated with the heat induced damage detection in composite materials using T-ray are discussed in detail in this paper. T-ray measurements are compared for different levels of heat exposure of composite specimens.

Paper Details

Date Published: 23 March 2015
PDF: 10 pages
Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 94381P (23 March 2015); doi: 10.1117/12.2084144
Show Author Affiliations
Maciej Radzieński, Institute of Fluid-Flow Machinery (Poland)
Magdalena Mieloszyk, Institute of Fluid-Flow Machinery (Poland)
Ehsan Kabiri Rahani, The Univ. of Arizona (United States)
Tribikram Kundu, The Univ. of Arizona (United States)
Wiesław Ostachowicz, Institute of Fluid-Flow Machinery (Poland)
Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 9438:
Health Monitoring of Structural and Biological Systems 2015
Tribikram Kundu, Editor(s)

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