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Detecting Stress Changes and Damage in Full-Size Concrete T-Beam and Slab with Ultrasonic Coda Waves
| 题名： | Detecting Stress Changes and Damage in Full-Size Concrete T-Beam and Slab with Ultrasonic Coda Waves |
| 正文语种： | eng |
| 作者： | Jiang, Hanwan;Zhan, Hanyu;Zhang, Jinquan;Jiang, Ruinian;Zhuang, Chenxu;Fan, Ping |
| 作者单位： | LeTourneau Univ Dept Engn & Engn Technol Longview TX 75602 USA;New Mexico State Univ Klipsch Sch Elect & Comp Engn Las Cruces NM 88003 USA;Minist Transport Res Inst Highway Beijing 100088 Peoples R China;New Mexico State Univ Dept Engn Technol & Surveying Engn Las Cruces NM 88001 USA;New Mexico State Univ Dept Civil Engn Las Cruces NM 88001 USA;Minist Transport Res Inst Highway Beijing 100088 Peoples R China |
| 关键词： | Ultrasound;Coda wave;Transducer network;Concrete;Nondestructive evaluation;Stress change;Damage |
| 摘要： | This article describes the use of coda wave measurements in a network of transducers for detecting stress changes and damage in large concrete structures. The applicability of the presented method is examined by performing four-point bending tests independently on two full-size concrete structures; i.e., a 6-m reinforced slab made in laboratory and a 30-m T-beam removed from a bridge after being in service for 15 years. The experiments demonstrate that stress changes and damage can be detected by coda waves for both laboratory and real-world concrete structures. The results also show that by setting up transducer networks appropriately, the tension and compression stress changes in concrete can be distinguished with a high degree of accuracy. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 9 |
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