Dissertation/ Thesis
Experimental Verification of A Hilbert-Huang Transform-based Structure Health Monitoring System
| العنوان: | Experimental Verification of A Hilbert-Huang Transform-based Structure Health Monitoring System |
|---|---|
| Alternate Title: | 應用希爾伯特-黃轉換之受震結構安全性實驗研究 |
| المؤلفون: | Chou, Wei-Ting, 周偉庭 |
| Thesis Advisors: | Lin, Tzu-Kang, 林子剛 |
| سنة النشر: | 2016 |
| المجموعة: | National Digital Library of Theses and Dissertations in Taiwan |
| الوصف: | 105 In recent years, many catastrophic seismic events have occurred. It is of importance that real-time structural health diagnosis and alert can be done before the structure becomes unstable, so that people can react immediately to reduce casualties and economic losses. In this study, the Hilbert-Huang Transform (HHT) is used to analyze the measured signal from the superstructure under the seismic experiment and the warning alarm system is developed. Firstly, the instantaneous Frequency (IF) of Intrinsic Mode Function (IMF) weighted with energy is used to get the Weighted Instantaneous Frequency (WIF). By defining the range of Maximum and Minimum value, Confidence Interval (CI), Stiffness Ratio (SR), the structure’s health condition can be determined. In order to verify the proposed method, shaking table tests are conducted on the benchmark structure and are examined afterwards. According to the analysis of the vibration signal recorded up to the time of collapse, it is shown that the change of structure behavior can be rapidly reflected, and warning alarm before structure collapse can be accurately provided. |
| Original Identifier: | 105NCTU5015020 |
| نوع الوثيقة: | 學位論文 ; thesis |
| وصف الملف: | 125 |
| الاتاحة: | http://ndltd.ncl.edu.tw/handle/20230355323162476781 |
| رقم الانضمام: | edsndl.TW.105NCTU5015020 |
| قاعدة البيانات: | Networked Digital Library of Theses & Dissertations |
| الوصف غير متاح. |