Non-destructive testing of reinforced concrete structures using sub-terahertz reflected waves

Kobayashi, Chihiro; Nishiwaki, Tomoya; Tanabe, Tadao; Oohashi, Takahiro; Hamasaki, Hitoshi; Hikishima, Shuya; Tanaka, Akio; Arita, Koji; Fujii, Sho; Sato, Daisuke; Kidokoro, Takeshi

doi:10.1016/j.dibe.2024.100423

Developments in the Built Environment

2024

DOI: 10.1016/j.dibe.2024.100423

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Non-destructive testing of reinforced concrete structures using sub-terahertz reflected waves

Chihiro Kobayashi,

Tomoya Nishiwaki,

Tadao Tanabe

et al.

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2024

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Construction of a Gigahertz Measurement System and Application of Non-destructive Testing Inside Reinforced Concrete

Tanabe

2024

Tetsu-to-Hagane

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A spectral measurement system using a sub-THz source in the bandwidth up to 100 GHz, obtained by multiplying and amplifying a frequency-variable signal in the GHz band operated by a silicon semiconductor device, was constructed in conjunction with a frequency-tunable singlefrequency THz source using GaP, which has been developed previously, in a transmission and reflection optical arrangement. The absorption spectra of ferrous corrosion products and the reflective imaging of metal fragments hidden behind concrete plate were measured. These results of the sub-THz and THz waves suggest that the interior of building structures can be inspected non-destructively based on the dielectric constant-based absorption and reflection of corrosion products and metals inside the concrete and metal surface under coating respectively, which have a high transmission property.

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Construction of a Gigahertz Measurement System and Application of Non-destructive Testing Inside Reinforced Concrete

Tanabe

2024

Tetsu-to-Hagane

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Non-destructive testing of reinforced concrete structures using sub-terahertz reflected waves

Cited by 1 publication

References 42 publications

Construction of a Gigahertz Measurement System and Application of Non-destructive Testing Inside Reinforced Concrete

Construction of a Gigahertz Measurement System and Application of Non-destructive Testing Inside Reinforced Concrete

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