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Time-Frequency Analysis of Impact Echo Signals of Grouting Defects in Tunnels |
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| Authors: | Yao Fei Chen Guangyu |
| Affiliation: | 1.College of civil and transportation engineering, Hohai university, 210098, Nanjing, China ; |
| Abstract: | Russian Journal of Nondestructive Testing - Abstract—Defects in the grouting layer are hidden problems of underground engineering quality, while it plays an important role in the stability of... |
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