標題: Performance Evaluation of an Entropy-Based Structural Health Monitoring System Utilizing Composite Multiscale Cross-Sample Entropy
作者: Lin, Tzu-Kang
Chien, Yi-Hsiu
土木工程學系
Department of Civil Engineering
關鍵字: structural health monitoring;multi-scale;composite cross-sample entropy
公開日期: 1-Jan-2019
摘要: The aim of this study was to develop an entropy-based structural health monitoring system for solving the problem of unstable entropy values observed when multiscale cross-sample entropy (MSCE) is employed to assess damage in real structures. Composite MSCE was utilized to enhance the reliability of entropy values on every scale. Additionally, the first mode of a structure was extracted using ensemble empirical mode decomposition to conduct entropy analysis and evaluate the accuracy of damage assessment. A seven-story model was created to validate the efficiency of the proposed method and the damage index. Subsequently, an experiment was conducted on a seven-story steel benchmark structure including 15 damaged cases to compare the numerical and experimental models. A confusion matrix was applied to classify the results and evaluate the performance over three indices: accuracy, precision, and recall. The results revealed the feasibility of the modified structural health monitoring system and demonstrated its potential in the field of long-term monitoring.
URI: http://dx.doi.org/10.3390/e21010041
http://hdl.handle.net/11536/148932
ISSN: 1099-4300
DOI: 10.3390/e21010041
期刊: ENTROPY
Volume: 21
Appears in Collections:Articles