Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method
In this paper, numerical and experimental studies for crack detection of structures using "element stiffness index distribution" are presented. The element stiffness index distribution is defined as a vector of norms of sub-matrices corresponding to element stiffness matrices calculated f...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Publishing House for Science and Technology
2017-09-01
|
| Series: | Vietnam Journal of Mechanics |
| Subjects: | |
| Online Access: | https://vjs.ac.vn/index.php/vjmech/article/view/8422 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850207020209143808 |
|---|---|
| author | Nguyen Viet Khoa Quang Van Nguyen Nguyen Dinh Kien Cao Van Mai Dao Thi Bich Thao |
| author_facet | Nguyen Viet Khoa Quang Van Nguyen Nguyen Dinh Kien Cao Van Mai Dao Thi Bich Thao |
| author_sort | Nguyen Viet Khoa |
| collection | DOAJ |
| description |
In this paper, numerical and experimental studies for crack detection of structures using "element stiffness index distribution" are presented. The element stiffness index distribution is defined as a vector of norms of sub-matrices corresponding to element stiffness matrices calculated from the reconstructed global stiffness matrix of the beam. When there is a crack at an element, the element stiffness index of that element will be changed. By inspecting the change in the element stiffness index distribution, the crack can be detected. A significant peak in the element stiffness index distribution is the indicator of the crack existence. The crack location is determined by the location of the peak and the crack depth can be determined from the height of the peak. The global stiffness matrix is calculated from the measured frequency response functions instead of mode shapes to avoid limitations of the mode shape-based methods for crack detection. Numerical simulation results for the cases of beam-like structures are provided. The experiment is carried out to justify the efficiency of the proposed method.
|
| format | Article |
| id | doaj-art-4e5ed7d10fe545bc9d405a7f10230b60 |
| institution | OA Journals |
| issn | 0866-7136 2815-5882 |
| language | English |
| publishDate | 2017-09-01 |
| publisher | Publishing House for Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Mechanics |
| spelling | doaj-art-4e5ed7d10fe545bc9d405a7f10230b602025-08-20T02:10:39ZengPublishing House for Science and TechnologyVietnam Journal of Mechanics0866-71362815-58822017-09-0139310.15625/0866-7136/8422Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution methodNguyen Viet Khoa0Quang Van Nguyen1Nguyen Dinh Kien2Cao Van Mai3Dao Thi Bich Thao4Institute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, VietnamInstitute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, VietnamInstitute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, VietnamInstitute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, VietnamInstitute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, Vietnam In this paper, numerical and experimental studies for crack detection of structures using "element stiffness index distribution" are presented. The element stiffness index distribution is defined as a vector of norms of sub-matrices corresponding to element stiffness matrices calculated from the reconstructed global stiffness matrix of the beam. When there is a crack at an element, the element stiffness index of that element will be changed. By inspecting the change in the element stiffness index distribution, the crack can be detected. A significant peak in the element stiffness index distribution is the indicator of the crack existence. The crack location is determined by the location of the peak and the crack depth can be determined from the height of the peak. The global stiffness matrix is calculated from the measured frequency response functions instead of mode shapes to avoid limitations of the mode shape-based methods for crack detection. Numerical simulation results for the cases of beam-like structures are provided. The experiment is carried out to justify the efficiency of the proposed method. https://vjs.ac.vn/index.php/vjmech/article/view/8422crack detectiondamage detectionmulti-cracks detectionstiffness methodelement stiffnesselement stiffness index distribution |
| spellingShingle | Nguyen Viet Khoa Quang Van Nguyen Nguyen Dinh Kien Cao Van Mai Dao Thi Bich Thao Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method Vietnam Journal of Mechanics crack detection damage detection multi-cracks detection stiffness method element stiffness element stiffness index distribution |
| title | Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method |
| title_full | Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method |
| title_fullStr | Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method |
| title_full_unstemmed | Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method |
| title_short | Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method |
| title_sort | numerical and experimental studies for crack detection of a beam like structure using element stiffness index distribution method |
| topic | crack detection damage detection multi-cracks detection stiffness method element stiffness element stiffness index distribution |
| url | https://vjs.ac.vn/index.php/vjmech/article/view/8422 |
| work_keys_str_mv | AT nguyenvietkhoa numericalandexperimentalstudiesforcrackdetectionofabeamlikestructureusingelementstiffnessindexdistributionmethod AT quangvannguyen numericalandexperimentalstudiesforcrackdetectionofabeamlikestructureusingelementstiffnessindexdistributionmethod AT nguyendinhkien numericalandexperimentalstudiesforcrackdetectionofabeamlikestructureusingelementstiffnessindexdistributionmethod AT caovanmai numericalandexperimentalstudiesforcrackdetectionofabeamlikestructureusingelementstiffnessindexdistributionmethod AT daothibichthao numericalandexperimentalstudiesforcrackdetectionofabeamlikestructureusingelementstiffnessindexdistributionmethod |