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MUTLIPLE PURPOSES OF LONG-GAUGE FIBER OPTIC SENSORS TOWARDS STRUCTURAL HEALTH MONITORING
| 题名： | MUTLIPLE PURPOSES OF LONG-GAUGE FIBER OPTIC SENSORS TOWARDS STRUCTURAL HEALTH MONITORING |
| 正文语种： | 中文 |
| 作者： | Zhishen Wu Jian Zhang Yongsheng Tang |
| 作者单位： | International Institute for Urban Systems Engineering Southeast University, Nanjing 210096, hina ; epartment of Urban and ivil Engineering, Ibaraki University, Hitachi 316-8511, Japan International Institute for Urban Systems Engineering Southeast University, Nanjing 210096, hina |
| 关键词： | Long-gauge Fiber optic sensor Macro-strain distribution Dynamic measurement Load identification Modal analysis Dagnosis and prognosis |
| 摘要： | A novel concept of area sensing based on long-gauge fiber optic sensors for structural health monitoring is presented in this paper.By designing the fiber optic sensor with a long gauge, it becomes possible to measure the distribu ted strain responses throughout the full at least most important areas of structures, thus not only local strain but also global information are obtained.Multiple purposes are achieved by desing the long-gague sensors for structural health monitoring as described below: (1) direct stratic and dynamic strain measurement; (2) deformation prediction from the long-gauge sensor output; (3) load identification from the distributed strain measurement; (4) modal analysis by using the dynamic macro-strain measurements for structural modal parameter identification; (5) damage detection by developing innovative macro-strain based damage indexes (like strain ratio).Advancement of the developed long-gauge fiber optic sensor technol ogy is demonstrated by implementing it for structural monitoring and damage detection of several real bridges throughout the paper. |
| 会议日期： | 201210 |
| 会议举办地点： | 南京 |
| 会议名称： | 第四届大跨径桥梁结构损伤预警及状态评估技术研讨会 |
| 出版日期： | 2012-09-30 |
| 母体文献： | 第四届大跨径桥梁结构损伤预警及状态评估技术研讨会论文集 |
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