MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY
This paper presents a novel method for detecting locations of damages in thin walled structural components made of fiber reinforced composites (FRC). Therefore, the change of harmonic distortion, which is found by current research to be very sensitive to delamination, under resonant excitation will...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Niš
2016-04-01
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| Series: | Facta Universitatis. Series: Mechanical Engineering |
| Online Access: | http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/1689 |
| _version_ | 1818324721426497536 |
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| author | Tobias Rademacher Manfred Zehn |
| author_facet | Tobias Rademacher Manfred Zehn |
| author_sort | Tobias Rademacher |
| collection | DOAJ |
| description | This paper presents a novel method for detecting locations of damages in thin walled structural components made of fiber reinforced composites (FRC). Therefore, the change of harmonic distortion, which is found by current research to be very sensitive to delamination, under resonant excitation will be derived from FEM-simulation. Based on the linear modal description of the undamaged structure and the damage-induced nonlinearities represented by a nonlinear measure, two spatial damage indexes have been formulated.
The main advantage of this novel approach is that the information about the defect is represented mainly by changes in the modal harmonic distortion (MHD), which just needs to be measured in one (or few) structural points. The spatial resolution is given by the pairwise coupling of the MHD with the corresponding mode shapes. |
| first_indexed | 2024-12-13T11:33:05Z |
| format | Article |
| id | doaj.art-e4258129712941ef9f9b9eb1d6aec3f4 |
| institution | Directory Open Access Journal |
| issn | 0354-2025 2335-0164 |
| language | English |
| last_indexed | 2024-12-13T11:33:05Z |
| publishDate | 2016-04-01 |
| publisher | University of Niš |
| record_format | Article |
| series | Facta Universitatis. Series: Mechanical Engineering |
| spelling | doaj.art-e4258129712941ef9f9b9eb1d6aec3f42022-12-21T23:47:52ZengUniversity of NišFacta Universitatis. Series: Mechanical Engineering0354-20252335-01642016-04-01141213610.22190/FUME1601021R817MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDYTobias Rademacher0Manfred Zehn1TU Berlin, Department of Structural and Computational Mechanics, GermanyTU Berlin, Department of Structural and Computational Mechanics, GermanyThis paper presents a novel method for detecting locations of damages in thin walled structural components made of fiber reinforced composites (FRC). Therefore, the change of harmonic distortion, which is found by current research to be very sensitive to delamination, under resonant excitation will be derived from FEM-simulation. Based on the linear modal description of the undamaged structure and the damage-induced nonlinearities represented by a nonlinear measure, two spatial damage indexes have been formulated. The main advantage of this novel approach is that the information about the defect is represented mainly by changes in the modal harmonic distortion (MHD), which just needs to be measured in one (or few) structural points. The spatial resolution is given by the pairwise coupling of the MHD with the corresponding mode shapes.http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/1689 |
| spellingShingle | Tobias Rademacher Manfred Zehn MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY Facta Universitatis. Series: Mechanical Engineering |
| title | MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY |
| title_full | MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY |
| title_fullStr | MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY |
| title_full_unstemmed | MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY |
| title_short | MODAL TRIGGERED NONLINEARITIES FOR DAMAGE LOCALIZATION IN THIN WALLED FRC STRUCTURES – A NUMERICAL STUDY |
| title_sort | modal triggered nonlinearities for damage localization in thin walled frc structures a numerical study |
| url | http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/1689 |
| work_keys_str_mv | AT tobiasrademacher modaltriggerednonlinearitiesfordamagelocalizationinthinwalledfrcstructuresanumericalstudy AT manfredzehn modaltriggerednonlinearitiesfordamagelocalizationinthinwalledfrcstructuresanumericalstudy |