Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method
This paper presents an improvement to the modal strain energy (MSE) method for identifying structural damages in plate-type structures. A two-step MSE-based damage localization procedure, including a global step and a local step, is newly proposed to enhance the accuracy of detecting the location of...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/4456439 |
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| author | Thanh-Cao Le Duc-Duy Ho Chi-Thien Nguyen Thanh-Canh Huynh |
| author_facet | Thanh-Cao Le Duc-Duy Ho Chi-Thien Nguyen Thanh-Canh Huynh |
| author_sort | Thanh-Cao Le |
| collection | DOAJ |
| description | This paper presents an improvement to the modal strain energy (MSE) method for identifying structural damages in plate-type structures. A two-step MSE-based damage localization procedure, including a global step and a local step, is newly proposed to enhance the accuracy of detecting the location of structural damage. Firstly, the global step uses the mode shape data on the whole plate to locate the potentially damaged areas. Then, MSE is applied with a more dense mesh size on these local areas to detect damage in more detail. The proposed procedure’s feasibility is verified by analyzing an aluminum plate with various damaged scenarios. This study uses finite element analysis to acquire the plate's natural frequencies and mode shapes in intact and damaged states. A set of two damage detection capacity indicators are also newly presented to evaluate the precision of the proposed procedure. The diagnostic results demonstrate that the proposed approach uses less modal data than the original MSE method and accurately identifies the damage's locations in the plates with various edge conditions. Moreover, the combination of three first mode shapes and a damage threshold of 40% of the maximum normalized damage index gives the best results of damage localization. |
| format | Article |
| id | doaj-art-4294c211cfff41ee8f07ff6b2c0a4c82 |
| institution | DOAJ |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4294c211cfff41ee8f07ff6b2c0a4c822025-08-20T02:39:15ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/4456439Structural Damage Localization in Plates Using Global and Local Modal Strain Energy MethodThanh-Cao Le0Duc-Duy Ho1Chi-Thien Nguyen2Thanh-Canh Huynh3Faculty of Civil EngineeringFaculty of Civil EngineeringFaculty of Civil EngineeringFaculty of Civil EngineeringThis paper presents an improvement to the modal strain energy (MSE) method for identifying structural damages in plate-type structures. A two-step MSE-based damage localization procedure, including a global step and a local step, is newly proposed to enhance the accuracy of detecting the location of structural damage. Firstly, the global step uses the mode shape data on the whole plate to locate the potentially damaged areas. Then, MSE is applied with a more dense mesh size on these local areas to detect damage in more detail. The proposed procedure’s feasibility is verified by analyzing an aluminum plate with various damaged scenarios. This study uses finite element analysis to acquire the plate's natural frequencies and mode shapes in intact and damaged states. A set of two damage detection capacity indicators are also newly presented to evaluate the precision of the proposed procedure. The diagnostic results demonstrate that the proposed approach uses less modal data than the original MSE method and accurately identifies the damage's locations in the plates with various edge conditions. Moreover, the combination of three first mode shapes and a damage threshold of 40% of the maximum normalized damage index gives the best results of damage localization.http://dx.doi.org/10.1155/2022/4456439 |
| spellingShingle | Thanh-Cao Le Duc-Duy Ho Chi-Thien Nguyen Thanh-Canh Huynh Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method Advances in Civil Engineering |
| title | Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method |
| title_full | Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method |
| title_fullStr | Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method |
| title_full_unstemmed | Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method |
| title_short | Structural Damage Localization in Plates Using Global and Local Modal Strain Energy Method |
| title_sort | structural damage localization in plates using global and local modal strain energy method |
| url | http://dx.doi.org/10.1155/2022/4456439 |
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