Complexities in Assessing Structural Health of Civil Infrastructures
The complexity in the health assessment of civil infrastructures, as it evolves over a long period of time, is briefly discussed. A simple problem can become very complex based on the current needs, sophistication required, and the technological advancements. To meet the current needs of locating de...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2017/2623805 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832555909219352576 |
|---|---|
| author | Abdullah Al-Hussein Achintya Haldar |
| author_facet | Abdullah Al-Hussein Achintya Haldar |
| author_sort | Abdullah Al-Hussein |
| collection | DOAJ |
| description | The complexity in the health assessment of civil infrastructures, as it evolves over a long period of time, is briefly discussed. A simple problem can become very complex based on the current needs, sophistication required, and the technological advancements. To meet the current needs of locating defect spots and their severity accurately and efficiently, infrastructures are represented by finite elements. To increase the implementation potential, the stiffness parameters of all the elements are identified and tracked using only few noise-contaminated dynamic responses measured at small part of the infrastructure. To extract the required information, Kalman filter concept is integrated with other numerical schemes. An unscented Kalman filter (UKF) concept is developed for highly nonlinear dynamic systems. It is denoted as 3D UKF-UI-WGI. The basic UKF concept is improved in several ways. Instead of using one long duration time-history in one global iteration, very short duration time-histories and multiple global iterations with weight factors are used to locate the defect spot more accurately and efficiently. The capabilities of the procedure are demonstrated with the help of two informative examples. The proposed procedure is much superior to the extended Kalman filter-based procedures developed by the team earlier. |
| format | Article |
| id | doaj-art-24b39f45b53f483dbdf0d4ffcfd3ae29 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-24b39f45b53f483dbdf0d4ffcfd3ae292025-02-03T05:46:49ZengWileyComplexity1076-27871099-05262017-01-01201710.1155/2017/26238052623805Complexities in Assessing Structural Health of Civil InfrastructuresAbdullah Al-Hussein0Achintya Haldar1Department of Civil Engineering, University of Basrah, Basrah, IraqDepartment of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, AZ 85721, USAThe complexity in the health assessment of civil infrastructures, as it evolves over a long period of time, is briefly discussed. A simple problem can become very complex based on the current needs, sophistication required, and the technological advancements. To meet the current needs of locating defect spots and their severity accurately and efficiently, infrastructures are represented by finite elements. To increase the implementation potential, the stiffness parameters of all the elements are identified and tracked using only few noise-contaminated dynamic responses measured at small part of the infrastructure. To extract the required information, Kalman filter concept is integrated with other numerical schemes. An unscented Kalman filter (UKF) concept is developed for highly nonlinear dynamic systems. It is denoted as 3D UKF-UI-WGI. The basic UKF concept is improved in several ways. Instead of using one long duration time-history in one global iteration, very short duration time-histories and multiple global iterations with weight factors are used to locate the defect spot more accurately and efficiently. The capabilities of the procedure are demonstrated with the help of two informative examples. The proposed procedure is much superior to the extended Kalman filter-based procedures developed by the team earlier.http://dx.doi.org/10.1155/2017/2623805 |
| spellingShingle | Abdullah Al-Hussein Achintya Haldar Complexities in Assessing Structural Health of Civil Infrastructures Complexity |
| title | Complexities in Assessing Structural Health of Civil Infrastructures |
| title_full | Complexities in Assessing Structural Health of Civil Infrastructures |
| title_fullStr | Complexities in Assessing Structural Health of Civil Infrastructures |
| title_full_unstemmed | Complexities in Assessing Structural Health of Civil Infrastructures |
| title_short | Complexities in Assessing Structural Health of Civil Infrastructures |
| title_sort | complexities in assessing structural health of civil infrastructures |
| url | http://dx.doi.org/10.1155/2017/2623805 |
| work_keys_str_mv | AT abdullahalhussein complexitiesinassessingstructuralhealthofcivilinfrastructures AT achintyahaldar complexitiesinassessingstructuralhealthofcivilinfrastructures |