A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames
Most of the civil structures exhibit nonlinear hysteresis behavior during earthquakes. However, detection of damage in these structures is a challenging issue due to successive change in structural characteristics during a seismic excitation. The current paper presents a promising approach for damag...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2014/523675 |
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| _version_ | 1849306210577154048 |
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| author | Ehsan Darvishan Gholamreza Ghodrati Amiri Pedram Ghaderi |
| author_facet | Ehsan Darvishan Gholamreza Ghodrati Amiri Pedram Ghaderi |
| author_sort | Ehsan Darvishan |
| collection | DOAJ |
| description | Most of the civil structures exhibit nonlinear hysteresis behavior during earthquakes. However, detection of damage in these structures is a challenging issue due to successive change in structural characteristics during a seismic excitation. The current paper presents a promising approach for damage detection of nonlinear moment frames. First, several instantaneous time-frequency methods including Hilbert-Huang transform, direct quadrature, Teager energy operator, and higher-order energy operator are investigated as signal processing tools and the most appropriate method is selected using an outlier analysis. Next, a procedure is proposed based on time-frequency analysis in conjunction with clustering to find damage extension in moment frames under a seismic excitation using frequency, amplitude, and energy damage measures. A probabilistic approach is implemented to investigate capability of the procedure for different ground motion records using incremental dynamic analysis. Results show that frequency is not an appropriate feature to detect damage in nonlinear structures. |
| format | Article |
| id | doaj-art-3914e6708151444ba4a8af8fb6acd38d |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-3914e6708151444ba4a8af8fb6acd38d2025-08-20T03:55:11ZengWileyShock and Vibration1070-96221875-92032014-01-01201410.1155/2014/523675523675A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting FramesEhsan Darvishan0Gholamreza Ghodrati Amiri1Pedram Ghaderi2School of Civil Engineering, Iran University of Science & Technology, P.O. Box 16765-163, Narmak, Tehran, IranSchool of Civil Engineering, Iran University of Science & Technology, P.O. Box 16765-163, Narmak, Tehran, IranSchool of Civil Engineering, Iran University of Science & Technology, P.O. Box 16765-163, Narmak, Tehran, IranMost of the civil structures exhibit nonlinear hysteresis behavior during earthquakes. However, detection of damage in these structures is a challenging issue due to successive change in structural characteristics during a seismic excitation. The current paper presents a promising approach for damage detection of nonlinear moment frames. First, several instantaneous time-frequency methods including Hilbert-Huang transform, direct quadrature, Teager energy operator, and higher-order energy operator are investigated as signal processing tools and the most appropriate method is selected using an outlier analysis. Next, a procedure is proposed based on time-frequency analysis in conjunction with clustering to find damage extension in moment frames under a seismic excitation using frequency, amplitude, and energy damage measures. A probabilistic approach is implemented to investigate capability of the procedure for different ground motion records using incremental dynamic analysis. Results show that frequency is not an appropriate feature to detect damage in nonlinear structures.http://dx.doi.org/10.1155/2014/523675 |
| spellingShingle | Ehsan Darvishan Gholamreza Ghodrati Amiri Pedram Ghaderi A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames Shock and Vibration |
| title | A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames |
| title_full | A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames |
| title_fullStr | A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames |
| title_full_unstemmed | A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames |
| title_short | A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames |
| title_sort | study on instantaneous time frequency methods for damage detection of nonlinear moment resisting frames |
| url | http://dx.doi.org/10.1155/2014/523675 |
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