Vibration-Based Damage Detection With Structural Modal Characteristics
A challenging problem in structural health monitoring systems is the requirement of a systematic, effective method for damage localisation and assessment severity of structures, based on vibration data measured by sensors. To address this issue, a novel technique, referred to as damage estimator wit...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2008-03-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3841 |
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| _version_ | 1846096926544494592 |
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| author | Yonggang Wang Yulong Pei Yangdon Zhao |
| author_facet | Yonggang Wang Yulong Pei Yangdon Zhao |
| author_sort | Yonggang Wang |
| collection | DOAJ |
| description | A challenging problem in structural health monitoring systems is the requirement of a systematic, effective method for damage localisation and assessment severity of structures, based on vibration data measured by sensors. To address this issue, a novel technique, referred to as damage estimator with modal parameters of structure before and after damage, is applied to detect the location and estimate the severity of existing damage of complex structures. Specifically, a series of experimental tests using a scaled offshore platform model of a 4-story jacket type has been conducted to verify the efficiency of proposed approach, with white noise excitations applied to the top plate of test model. For 6 scenarios of damage conditions simulated by bolt adjustment in the 3rd layer, vibration-based impulse data are induced by an impact hammer and recorded to analyse the variations of modal parameters. Upon the investigation, the results highlight that damage estimator is capable of tracking damage orientation and severity longitudinally, using data from only the fundamental mode shape before and after damage. However, detection accuracy declines considerably for small-scale damages. |
| format | Article |
| id | doaj-art-14a49c31cd0148ab8aec1d5367a16e36 |
| institution | Kabale University |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2008-03-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-14a49c31cd0148ab8aec1d5367a16e362025-01-02T05:53:48ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882008-03-013121282160Vibration-Based Damage Detection With Structural Modal CharacteristicsYonggang Wang0Yulong Pei1Yangdon Zhao2School of Transportation Science and Engineering, Harbin Institute of Technology 202 Haihe Road, Harbin 150090, P. R. ChinaSchool of Transportation Science and Engineering, Harbin Institute of Technology 202 Haihe Road, Harbin 150090, P. R. ChinaFirst Branch, CCCC First Highway Consultants Co., Ltd 63 Keji 2nd Road, Xi’an 710075, P. R. ChinaA challenging problem in structural health monitoring systems is the requirement of a systematic, effective method for damage localisation and assessment severity of structures, based on vibration data measured by sensors. To address this issue, a novel technique, referred to as damage estimator with modal parameters of structure before and after damage, is applied to detect the location and estimate the severity of existing damage of complex structures. Specifically, a series of experimental tests using a scaled offshore platform model of a 4-story jacket type has been conducted to verify the efficiency of proposed approach, with white noise excitations applied to the top plate of test model. For 6 scenarios of damage conditions simulated by bolt adjustment in the 3rd layer, vibration-based impulse data are induced by an impact hammer and recorded to analyse the variations of modal parameters. Upon the investigation, the results highlight that damage estimator is capable of tracking damage orientation and severity longitudinally, using data from only the fundamental mode shape before and after damage. However, detection accuracy declines considerably for small-scale damages.https://bjrbe-journals.rtu.lv/article/view/3841health monitoringdamage localisationseverity assessmentdamage estimationoffshore platformstructural modal |
| spellingShingle | Yonggang Wang Yulong Pei Yangdon Zhao Vibration-Based Damage Detection With Structural Modal Characteristics The Baltic Journal of Road and Bridge Engineering health monitoring damage localisation severity assessment damage estimation offshore platform structural modal |
| title | Vibration-Based Damage Detection With Structural Modal Characteristics |
| title_full | Vibration-Based Damage Detection With Structural Modal Characteristics |
| title_fullStr | Vibration-Based Damage Detection With Structural Modal Characteristics |
| title_full_unstemmed | Vibration-Based Damage Detection With Structural Modal Characteristics |
| title_short | Vibration-Based Damage Detection With Structural Modal Characteristics |
| title_sort | vibration based damage detection with structural modal characteristics |
| topic | health monitoring damage localisation severity assessment damage estimation offshore platform structural modal |
| url | https://bjrbe-journals.rtu.lv/article/view/3841 |
| work_keys_str_mv | AT yonggangwang vibrationbaseddamagedetectionwithstructuralmodalcharacteristics AT yulongpei vibrationbaseddamagedetectionwithstructuralmodalcharacteristics AT yangdonzhao vibrationbaseddamagedetectionwithstructuralmodalcharacteristics |