| Presentation | 2000/11/18 Crack detection based on the singularity in the wave field Kenbu TERAMOTO, Hajime YUASA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Impact-echo is a method for non-destructive testing of concrete and steel structures that is based on the use to impact-generated surface acoustic waves that propagate over the concrete and steel and are reflected by internal flaws and external cracks. It can be used to determine the location and extent of flaws such as cracks, delaminations, voids and debonding in plain, reinforced, and post-tensioned concrete structures. The proposed wave frontal detection method can classify the surface acoustic wave field as the rank of covariance matrix of the spatio-temporal gradient space. It can provide wave velocity and 2-dimensional location of a wave source and wave velocity and a collinear vector of the impact point and a crack. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | impact-echo test / inversion / wave frontal detection / acoustic sensing / array signal processing |
| Paper # | EA2000-78 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2000/11/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Crack detection based on the singularity in the wave field |
| Sub Title (in English) | |
| Keyword(1) | impact-echo test |
| Keyword(2) | inversion |
| Keyword(3) | wave frontal detection |
| Keyword(4) | acoustic sensing |
| Keyword(5) | array signal processing |
| 1st Author's Name | Kenbu TERAMOTO |
| 1st Author's Affiliation | Faculty of Science and Engineering, Saga University() |
| 2nd Author's Name | Hajime YUASA |
| 2nd Author's Affiliation | Akishima Laboratory Mitsui zosen Inc. |
| Date | 2000/11/18 |
| Paper # | EA2000-78 |
| Volume (vol) | vol.100 |
| Number (no) | 468 |
| Page | pp.pp.- |
| #Pages | 8 |
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