The demand for non-destructive inspection of the thermal insulation layer of Japanese houses has been increasing. Surface temperature measurement is commonly used for estimating the condition of the thermal insulation layer that is located inside the walls. However, the accuracy needs to be improved because this approach only considers the surface information. To evaluate the thermal insulation layer inside the walls, a millimeter-wave tomography system is proposed for measuring the water content. The system can provide ∼10 mm range resolution to differentiate the reflections from the thermal insulation layer behind the external wall. The Lichtenecker-Rother model is applied for the quantitative evaluation of the water content using the reflected signal. The proposed model is consistent with the experimental data, confirming that a maximum error of 16.0% is obtained. It is also demonstrated that the water content distribution can be visualized with a range resolution of 10.6 mm.
Yushi TAMENORI
Osaka University
Haruka TOKUNAGA
Osaka University
Li YI
Osaka University
Tadao NAGATSUMA
Osaka University
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Yushi TAMENORI, Haruka TOKUNAGA, Li YI, Tadao NAGATSUMA, "Water Content Estimation in Thermal Insulation Layer Using Millimeter-Wave Optical Coherence Tomography" in IEICE TRANSACTIONS on Electronics,
vol. E105-C, no. 1, pp. 1-8, January 2022, doi: 10.1587/transele.2021ECP5007.
Abstract: The demand for non-destructive inspection of the thermal insulation layer of Japanese houses has been increasing. Surface temperature measurement is commonly used for estimating the condition of the thermal insulation layer that is located inside the walls. However, the accuracy needs to be improved because this approach only considers the surface information. To evaluate the thermal insulation layer inside the walls, a millimeter-wave tomography system is proposed for measuring the water content. The system can provide ∼10 mm range resolution to differentiate the reflections from the thermal insulation layer behind the external wall. The Lichtenecker-Rother model is applied for the quantitative evaluation of the water content using the reflected signal. The proposed model is consistent with the experimental data, confirming that a maximum error of 16.0% is obtained. It is also demonstrated that the water content distribution can be visualized with a range resolution of 10.6 mm.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2021ECP5007/_p
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@ARTICLE{e105-c_1_1,
author={Yushi TAMENORI, Haruka TOKUNAGA, Li YI, Tadao NAGATSUMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Water Content Estimation in Thermal Insulation Layer Using Millimeter-Wave Optical Coherence Tomography},
year={2022},
volume={E105-C},
number={1},
pages={1-8},
abstract={The demand for non-destructive inspection of the thermal insulation layer of Japanese houses has been increasing. Surface temperature measurement is commonly used for estimating the condition of the thermal insulation layer that is located inside the walls. However, the accuracy needs to be improved because this approach only considers the surface information. To evaluate the thermal insulation layer inside the walls, a millimeter-wave tomography system is proposed for measuring the water content. The system can provide ∼10 mm range resolution to differentiate the reflections from the thermal insulation layer behind the external wall. The Lichtenecker-Rother model is applied for the quantitative evaluation of the water content using the reflected signal. The proposed model is consistent with the experimental data, confirming that a maximum error of 16.0% is obtained. It is also demonstrated that the water content distribution can be visualized with a range resolution of 10.6 mm.},
keywords={},
doi={10.1587/transele.2021ECP5007},
ISSN={1745-1353},
month={January},}
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TY - JOUR
TI - Water Content Estimation in Thermal Insulation Layer Using Millimeter-Wave Optical Coherence Tomography
T2 - IEICE TRANSACTIONS on Electronics
SP - 1
EP - 8
AU - Yushi TAMENORI
AU - Haruka TOKUNAGA
AU - Li YI
AU - Tadao NAGATSUMA
PY - 2022
DO - 10.1587/transele.2021ECP5007
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E105-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2022
AB - The demand for non-destructive inspection of the thermal insulation layer of Japanese houses has been increasing. Surface temperature measurement is commonly used for estimating the condition of the thermal insulation layer that is located inside the walls. However, the accuracy needs to be improved because this approach only considers the surface information. To evaluate the thermal insulation layer inside the walls, a millimeter-wave tomography system is proposed for measuring the water content. The system can provide ∼10 mm range resolution to differentiate the reflections from the thermal insulation layer behind the external wall. The Lichtenecker-Rother model is applied for the quantitative evaluation of the water content using the reflected signal. The proposed model is consistent with the experimental data, confirming that a maximum error of 16.0% is obtained. It is also demonstrated that the water content distribution can be visualized with a range resolution of 10.6 mm.
ER -