Structural Damage Identification Based on Transmissibility in Time Domain
Structural damage identification technology is of great significance to improve the reliability and safety of civil structures and has attracted much attention in the study of structural health monitoring. In this paper, a novel structural damage identification method based on transmissibility in th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/1/393 |
| _version_ | 1827667561084354560 |
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| author | Yunfeng Zou Xuandong Lu Jinsong Yang Tiantian Wang Xuhui He |
| author_facet | Yunfeng Zou Xuandong Lu Jinsong Yang Tiantian Wang Xuhui He |
| author_sort | Yunfeng Zou |
| collection | DOAJ |
| description | Structural damage identification technology is of great significance to improve the reliability and safety of civil structures and has attracted much attention in the study of structural health monitoring. In this paper, a novel structural damage identification method based on transmissibility in the time domain is proposed. The method takes the discrepancy of transmissibility of structure response in the time domain before and after damage as the basis of finite element model updating. The damage is located and quantified through iteration by minimizing the difference between the measurements at gauge locations and the reconstruction response extrapolated by the finite element model. Taking advantage of the response reconstruction method based on empirical mode decomposition, damage information can be obtained in the absence of prior knowledge on excitation. Moreover, this method directly collects time-domain data for identification without modal identification and frequent time–frequency conversion, which can greatly improve efficiency on the premise of ensuring accuracy. A numerical example is used to demonstrate the overall damage identification method, and the study of measurement noise shows that the method has strong robustness. Finally, the present work investigates the method through a simply supported overhanging beam. The experiments collect the vibration strain signals of the beam via resistance strain gauges. The comparison between identification results and theoretical values shows the effectiveness and accuracy of the method. |
| first_indexed | 2024-03-10T03:20:02Z |
| format | Article |
| id | doaj.art-5050930b500a41c7a578ba3fa32ba779 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:20:02Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5050930b500a41c7a578ba3fa32ba7792023-11-23T12:21:41ZengMDPI AGSensors1424-82202022-01-0122139310.3390/s22010393Structural Damage Identification Based on Transmissibility in Time DomainYunfeng Zou0Xuandong Lu1Jinsong Yang2Tiantian Wang3Xuhui He4School of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Traffic and Transportation Engineering, Central South University, Changsha 410075, ChinaSchool of Traffic and Transportation Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaStructural damage identification technology is of great significance to improve the reliability and safety of civil structures and has attracted much attention in the study of structural health monitoring. In this paper, a novel structural damage identification method based on transmissibility in the time domain is proposed. The method takes the discrepancy of transmissibility of structure response in the time domain before and after damage as the basis of finite element model updating. The damage is located and quantified through iteration by minimizing the difference between the measurements at gauge locations and the reconstruction response extrapolated by the finite element model. Taking advantage of the response reconstruction method based on empirical mode decomposition, damage information can be obtained in the absence of prior knowledge on excitation. Moreover, this method directly collects time-domain data for identification without modal identification and frequent time–frequency conversion, which can greatly improve efficiency on the premise of ensuring accuracy. A numerical example is used to demonstrate the overall damage identification method, and the study of measurement noise shows that the method has strong robustness. Finally, the present work investigates the method through a simply supported overhanging beam. The experiments collect the vibration strain signals of the beam via resistance strain gauges. The comparison between identification results and theoretical values shows the effectiveness and accuracy of the method.https://www.mdpi.com/1424-8220/22/1/393damage identificationtransmissibilitytime domainfinite element model updatingsensitivity |
| spellingShingle | Yunfeng Zou Xuandong Lu Jinsong Yang Tiantian Wang Xuhui He Structural Damage Identification Based on Transmissibility in Time Domain Sensors damage identification transmissibility time domain finite element model updating sensitivity |
| title | Structural Damage Identification Based on Transmissibility in Time Domain |
| title_full | Structural Damage Identification Based on Transmissibility in Time Domain |
| title_fullStr | Structural Damage Identification Based on Transmissibility in Time Domain |
| title_full_unstemmed | Structural Damage Identification Based on Transmissibility in Time Domain |
| title_short | Structural Damage Identification Based on Transmissibility in Time Domain |
| title_sort | structural damage identification based on transmissibility in time domain |
| topic | damage identification transmissibility time domain finite element model updating sensitivity |
| url | https://www.mdpi.com/1424-8220/22/1/393 |
| work_keys_str_mv | AT yunfengzou structuraldamageidentificationbasedontransmissibilityintimedomain AT xuandonglu structuraldamageidentificationbasedontransmissibilityintimedomain AT jinsongyang structuraldamageidentificationbasedontransmissibilityintimedomain AT tiantianwang structuraldamageidentificationbasedontransmissibilityintimedomain AT xuhuihe structuraldamageidentificationbasedontransmissibilityintimedomain |