| Presentation | 2013-02-19 Ultrasonic Imaging of Internal Voids in Concrete by the FSAP Technique with an Array Transducer in Low Frequency Range Kazuyuki NAKAHATA, Gun KAWAMURA, Sohichi HIROSE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This study presents a flaw reconstruction method in concrete material with the full-waveform sampling and processing (FSAP) technique The FSAP is an ultrasonic phased array technique which makes use of scattered waves, measured by every two-element combination as a pulser and a receiver, to synthesize high amplitude beams for any focal point Here, we investigate the property of wave field in concrete using the elastodynamic finite in-tegration technique (EFIT) Since it is shown that wave dispersion is not significant in a frequency range of this measurement, a constant velocity is used in flaw reconstructions by the FSAP An internal flaw located on the depth of approximately 200mm can be reconstructed using an array transducer with 200 kHz center frequency |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic Testing / Array Transducer / Full-waveform sampling and processing(FSAP) Technique / Flaw Reconstruction / Concrete Material |
| Paper # | US2012-119 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2013/2/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Ultrasonic Imaging of Internal Voids in Concrete by the FSAP Technique with an Array Transducer in Low Frequency Range |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic Testing |
| Keyword(2) | Array Transducer |
| Keyword(3) | Full-waveform sampling and processing(FSAP) Technique |
| Keyword(4) | Flaw Reconstruction |
| Keyword(5) | Concrete Material |
| 1st Author's Name | Kazuyuki NAKAHATA |
| 1st Author's Affiliation | Department of Civil and Environmental Engineering, Ehime University() |
| 2nd Author's Name | Gun KAWAMURA |
| 2nd Author's Affiliation | Department of Civil and Environmental Engineering, Ehime University |
| 3rd Author's Name | Sohichi HIROSE |
| 3rd Author's Affiliation | Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology |
| Date | 2013-02-19 |
| Paper # | US2012-119 |
| Volume (vol) | vol.112 |
| Number (no) | 437 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |