Coda Wave Interferometry used to detect loads and cracks in a concrete structure under field conditions
| Main Authors: | WANG, XIN, NIEDERLEITHINGER, ERNST |
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| Format: | Proceeding Journal |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1402380 |
Daftar Isi:
- Nowadays, the excessive use and environmental factors have accelerated the deterioration of concrete bridges. Coda Wave Interferometry (CWI) for ultrasonic data is one of the most promising methods to detect subtle changes in heterogeneous materials like concrete. The advantage of this method is that large volume structure can be monitored by a limited number of sensors using multiply scattered waves. However, previous research results objects on cracks detection and localization using the CWI method are mostly limited to laboratory size concrete. Till now, it is still difficult to separate and quantify the influence factors such as cracks, stress and temperature especially under outdoor environment. To evaluate the various influence factors, data integration with other types of sensors and the improvement of CWI method are necessary. In this paper, detection of loads and cracks in a 24.4 meters long pre- tensioned reinforcement concrete beam with multiple sensors installed including a new type of embedded ultrasonic sensor and which was situated under field environment will be examined by integrating CWI technics with others. As a result, cracks should be identified in a rough range or even more precise.