Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics
The article defines and explains methods for detecting and locating damage and quantifying its extent on an example of a finite element model of a simple beam. The defined methods are based on a comparison of the decreases in the bending natural frequencies of the nominally damaged models against th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/19/10777 |
| _version_ | 1797576173108068352 |
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| author | Marek Páleník Miloš Musil Juraj Úradníček |
| author_facet | Marek Páleník Miloš Musil Juraj Úradníček |
| author_sort | Marek Páleník |
| collection | DOAJ |
| description | The article defines and explains methods for detecting and locating damage and quantifying its extent on an example of a finite element model of a simple beam. The defined methods are based on a comparison of the decreases in the bending natural frequencies of the nominally damaged models against the intact model. This comparison assigns natural frequency decreases to curvature of a specific mode shape, which allows creation of an analytical reference model using polynomial regression, which assigns relative natural frequency decreases to the position on the beam. The localisation method assumes that the vector of the relative natural frequency decrease ratios are unique for each position on the beam. The quantification method considers as a relevant comparative quantity, slopes of relative natural frequency decreases, as a function of damage extent. Examples of damage localisation and quantification are defined, and the relative errors of these methods are analysed. |
| first_indexed | 2024-03-10T21:49:27Z |
| format | Article |
| id | doaj.art-4aa8812ec07847caae47e1b0c662aa92 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T21:49:27Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-4aa8812ec07847caae47e1b0c662aa922023-11-19T14:04:04ZengMDPI AGApplied Sciences2076-34172023-09-0113191077710.3390/app131910777Detection, Localisation and Quantification of Structural Damage Using Changes in Modal CharacteristicsMarek Páleník0Miloš Musil1Juraj Úradníček2Institute of Applied Mechanics and Mechatronics, Faculty of Mechanical Engineering, Slovak University of Technology, Námestie Slobody 2910/17, 812 31 Staré Mesto, SlovakiaInstitute of Applied Mechanics and Mechatronics, Faculty of Mechanical Engineering, Slovak University of Technology, Námestie Slobody 2910/17, 812 31 Staré Mesto, SlovakiaInstitute of Applied Mechanics and Mechatronics, Faculty of Mechanical Engineering, Slovak University of Technology, Námestie Slobody 2910/17, 812 31 Staré Mesto, SlovakiaThe article defines and explains methods for detecting and locating damage and quantifying its extent on an example of a finite element model of a simple beam. The defined methods are based on a comparison of the decreases in the bending natural frequencies of the nominally damaged models against the intact model. This comparison assigns natural frequency decreases to curvature of a specific mode shape, which allows creation of an analytical reference model using polynomial regression, which assigns relative natural frequency decreases to the position on the beam. The localisation method assumes that the vector of the relative natural frequency decrease ratios are unique for each position on the beam. The quantification method considers as a relevant comparative quantity, slopes of relative natural frequency decreases, as a function of damage extent. Examples of damage localisation and quantification are defined, and the relative errors of these methods are analysed.https://www.mdpi.com/2076-3417/13/19/10777modesnatural frequencydamageidentification |
| spellingShingle | Marek Páleník Miloš Musil Juraj Úradníček Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics Applied Sciences modes natural frequency damage identification |
| title | Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics |
| title_full | Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics |
| title_fullStr | Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics |
| title_full_unstemmed | Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics |
| title_short | Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics |
| title_sort | detection localisation and quantification of structural damage using changes in modal characteristics |
| topic | modes natural frequency damage identification |
| url | https://www.mdpi.com/2076-3417/13/19/10777 |
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