Distributed fiber optic sensing for crack detection in concrete structures
Distributed fiber optic sensing for crack detection in concrete structures
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DOI：
10.1002/best.201800089
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发表时间：
2019-03-01
影响因子：
1.1
通讯作者：
Crepaz, Simone
中科院分区：
文献类型：
--
作者：
Fischer, Oliver;Thoma, Sebastian;Crepaz, Simone
光纤应变测量方法为工程结构的系统监测提供了新的可能性。对于实际应用，需要测量装置和无源光纤电缆的鲁棒但足够灵敏的配置。在这种情况下，慕尼黑工业大学（TUM）的固体结构主席在预应力混凝土梁上使用两种测量仪器，针对不同的应用变体，分析了总共五种不同的光学测量纤维。光纤传感器技术，辅以传统的测量技术，能够检测弹性应变，裂纹形成和决定性的剪切裂纹的断裂条件。
The method of fiber optic strain measurement offers new possibilities in the systematic monitoring of engineering structures. A robust but sufficiently sensitive configuration of measuring device and passive fiber optic cable is desirable for practical application. In this context, a total of five different optical measuring fibers were analyzed at the Chair of Solid Construction at the Technical University of Munich (TUM) for different application variants using two measuring instruments on a prestressed concrete beam. The fiber-optic sensor technology, supplemented by conventional measuring technology, was able to detect elastic strain, crack formation and decisive shear cracks of the fracture condition.