Heat induced damage detection by terahertz (THz) radiation

Ehsan Kabiri Rahani; Tribikram Kundu; Ziran Wu; Hao Xin

doi:10.1007/s10762-011-9784-7

Heat induced damage detection by terahertz (THz) radiation

Ehsan Kabiri Rahani
, Tribikram Kundu
, Ziran Wu
, Hao Xin

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Terahertz (THz) and sub-terahertz imaging and spectroscopy are becoming increasingly popular nondestructive evaluation techniques for damage detection and characterization of materials. THz radiation is being used for inspecting ceramic foam tiles used in TPS (Thermal Protection System), thick polymer composites and polymer tiles that are not good conductors of ultrasonic waves. Capability of THz electromagnetic waves in detecting heat induced damage in porous materials is investigated in this paper. Porous pumice stone blocks are subjected to long time heat exposures to produce heat induced damage in the block. The dielectric properties extracted from THz TDS (Time Domain Spectroscopy) measurements are compared for different levels of heat exposure. Experimental results show noticeable and consistent change in dielectric properties with increasing levels of heat exposure, well before its melting point.

Original language	English (US)
Pages (from-to)	848-856
Number of pages	9
Journal	Journal of Infrared, Millimeter, and Terahertz Waves
Volume	32
Issue number	6
DOIs	https://doi.org/10.1007/s10762-011-9784-7
State	Published - Jun 2011

Keywords

Dielectric properties
Nondestructive testing
THz time-domain spectroscopy
Thermal effects

ASJC Scopus subject areas

Radiation
Instrumentation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1007/s10762-011-9784-7

Cite this

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title = "Heat induced damage detection by terahertz (THz) radiation",

abstract = "Terahertz (THz) and sub-terahertz imaging and spectroscopy are becoming increasingly popular nondestructive evaluation techniques for damage detection and characterization of materials. THz radiation is being used for inspecting ceramic foam tiles used in TPS (Thermal Protection System), thick polymer composites and polymer tiles that are not good conductors of ultrasonic waves. Capability of THz electromagnetic waves in detecting heat induced damage in porous materials is investigated in this paper. Porous pumice stone blocks are subjected to long time heat exposures to produce heat induced damage in the block. The dielectric properties extracted from THz TDS (Time Domain Spectroscopy) measurements are compared for different levels of heat exposure. Experimental results show noticeable and consistent change in dielectric properties with increasing levels of heat exposure, well before its melting point.",

keywords = "Dielectric properties, Nondestructive testing, THz time-domain spectroscopy, Thermal effects",

author = "Rahani, \{Ehsan Kabiri\} and Tribikram Kundu and Ziran Wu and Hao Xin",

note = "Funding Information: Acknowledgment This research was financially supported from the Air Force Office of Scientific Research (AFOSR) grant (\#FA9550-08-1-0318), Program managers are Dr. Victor Giurgiutiu and Dr. David Stargel. Ziran Wu and Hao Xin thank National Science Foundation (NSF) for partial support through Awards 0823864 and 0925220. The results and conclusions presented here are those of the authors and do not represent the views of AFOSR or NSF.",

year = "2011",

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doi = "10.1007/s10762-011-9784-7",

language = "English (US)",

volume = "32",

pages = "848--856",

journal = "Journal of Infrared, Millimeter, and Terahertz Waves",

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AU - Rahani, Ehsan Kabiri

AU - Kundu, Tribikram

AU - Wu, Ziran

AU - Xin, Hao

N1 - Funding Information: Acknowledgment This research was financially supported from the Air Force Office of Scientific Research (AFOSR) grant (#FA9550-08-1-0318), Program managers are Dr. Victor Giurgiutiu and Dr. David Stargel. Ziran Wu and Hao Xin thank National Science Foundation (NSF) for partial support through Awards 0823864 and 0925220. The results and conclusions presented here are those of the authors and do not represent the views of AFOSR or NSF.

PY - 2011/6

Y1 - 2011/6

N2 - Terahertz (THz) and sub-terahertz imaging and spectroscopy are becoming increasingly popular nondestructive evaluation techniques for damage detection and characterization of materials. THz radiation is being used for inspecting ceramic foam tiles used in TPS (Thermal Protection System), thick polymer composites and polymer tiles that are not good conductors of ultrasonic waves. Capability of THz electromagnetic waves in detecting heat induced damage in porous materials is investigated in this paper. Porous pumice stone blocks are subjected to long time heat exposures to produce heat induced damage in the block. The dielectric properties extracted from THz TDS (Time Domain Spectroscopy) measurements are compared for different levels of heat exposure. Experimental results show noticeable and consistent change in dielectric properties with increasing levels of heat exposure, well before its melting point.

AB - Terahertz (THz) and sub-terahertz imaging and spectroscopy are becoming increasingly popular nondestructive evaluation techniques for damage detection and characterization of materials. THz radiation is being used for inspecting ceramic foam tiles used in TPS (Thermal Protection System), thick polymer composites and polymer tiles that are not good conductors of ultrasonic waves. Capability of THz electromagnetic waves in detecting heat induced damage in porous materials is investigated in this paper. Porous pumice stone blocks are subjected to long time heat exposures to produce heat induced damage in the block. The dielectric properties extracted from THz TDS (Time Domain Spectroscopy) measurements are compared for different levels of heat exposure. Experimental results show noticeable and consistent change in dielectric properties with increasing levels of heat exposure, well before its melting point.

KW - Dielectric properties

KW - Nondestructive testing

KW - THz time-domain spectroscopy

KW - Thermal effects

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DO - 10.1007/s10762-011-9784-7

M3 - Article

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JO - Journal of Infrared, Millimeter, and Terahertz Waves

JF - Journal of Infrared, Millimeter, and Terahertz Waves

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ER -

Heat induced damage detection by terahertz (THz) radiation

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Keywords

ASJC Scopus subject areas

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