TY - JOUR
T1 - Observation of damage in insulated copper cables by THz imaging
AU - Takahashi, Seiya
AU - Hamano, Tomoyuki
AU - Nakajima, Kaori
AU - Tanabe, Tadao
AU - Oyama, Yutaka
N1 - Funding Information:
This work was partially supported financially by the Ministry of Land, Infrastructure, Transport and Tourism .
PY - 2014
Y1 - 2014
N2 - A novel non-destructive inspection method using terahertz waves for the detection of broken wires in copper cables shielded by insulating polymer opaque in the visible and near infrared light region is presented. Terahertz reflection imaging, using a 0.14 THz IMPATT oscillator and a Schottky barrier detector, was applied to insulated copper cables that had been artificially damaged. The internal insulated wires embedded in the opaque polyethylene can be clearly visualized using THz radiation. It was shown that a gap in a wire can be detected by a decrease in the intensity of the reflected signal where the size of the gap is greater than the wavelength of the oscillator.
AB - A novel non-destructive inspection method using terahertz waves for the detection of broken wires in copper cables shielded by insulating polymer opaque in the visible and near infrared light region is presented. Terahertz reflection imaging, using a 0.14 THz IMPATT oscillator and a Schottky barrier detector, was applied to insulated copper cables that had been artificially damaged. The internal insulated wires embedded in the opaque polyethylene can be clearly visualized using THz radiation. It was shown that a gap in a wire can be detected by a decrease in the intensity of the reflected signal where the size of the gap is greater than the wavelength of the oscillator.
KW - Copper conducting wire
KW - Non-destructive inspection
KW - THz imaging
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U2 - 10.1016/j.ndteint.2013.10.004
DO - 10.1016/j.ndteint.2013.10.004
M3 - Article
AN - SCOPUS:84887854804
VL - 61
SP - 75
EP - 79
JO - NDT and E International
JF - NDT and E International
SN - 0963-8695
ER -