Locating cracks in RC structures using mode shape-based indices and proposed modifications
This study presents the application of two indices for the locating of cracks in Reinforced Concrete (RC) structures, as well as the development of their modified forms to overcome limitations. The first index is based on mode shape curvature and the second index is based on the fourth derivative of...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Published: |
Techno Press
2022
|
| Subjects: | |
| Online Access: | http://eprints.um.edu.my/43173/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123076813&doi=10.12989%2facd.2022.7.1.081&partnerID=40&md5=223be2c8d19bfcd07050bd12bf41efbb |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
my.um.eprints.43173 |
|---|---|
| record_format |
eprints |
| spelling |
my.um.eprints.431732023-10-09T10:01:59Z http://eprints.um.edu.my/43173/ Locating cracks in RC structures using mode shape-based indices and proposed modifications Fayyadh, Moatasem M. Razak, Hashim Abdul TA Engineering (General). Civil engineering (General) This study presents the application of two indices for the locating of cracks in Reinforced Concrete (RC) structures, as well as the development of their modified forms to overcome limitations. The first index is based on mode shape curvature and the second index is based on the fourth derivative of the mode shape. In order to confirm the indices’ effectiveness, both eigenvalues coupled with nonlinear static analyses were carried out and the eigenvectors for two different damage locations and intensities of load were obtained from the finite element model of RC beams. The values of the damage-locating indices derived using both indices were then compared. Generally, the mode shape curvature-based index suffered from insensitivity when attempting to detect the damage location; this also applied to the mode shape fourth derivative-based index at lower modes. However, at higher modes, the mode shape fourth derivative-based index gave an acceptable indication of the damage location. Both the indices showed inconsistencies and anomalies at the supports. This study proposed modification to both indices to overcome identified flaws. The results proved that modified forms exhibited better sensitivity for identifying the damage location. In addition, anomalies at the supports were eliminated. © 2022 Techno-Press, Ltd. Techno Press 2022 Article PeerReviewed Fayyadh, Moatasem M. and Razak, Hashim Abdul (2022) Locating cracks in RC structures using mode shape-based indices and proposed modifications. Advances in Computational Design, an International Journal, 7 (1). 81 – 98. ISSN 2383-8477, DOI https://doi.org/10.12989/acd.2022.7.1.081 <https://doi.org/10.12989/acd.2022.7.1.081>. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123076813&doi=10.12989%2facd.2022.7.1.081&partnerID=40&md5=223be2c8d19bfcd07050bd12bf41efbb 10.12989/acd.2022.7.1.081 |
| institution |
Universiti Malaya |
| building |
UM Library |
| collection |
Institutional Repository |
| continent |
Asia |
| country |
Malaysia |
| content_provider |
Universiti Malaya |
| content_source |
UM Research Repository |
| url_provider |
http://eprints.um.edu.my/ |
| topic |
TA Engineering (General). Civil engineering (General) |
| spellingShingle |
TA Engineering (General). Civil engineering (General) Fayyadh, Moatasem M. Razak, Hashim Abdul Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| description |
This study presents the application of two indices for the locating of cracks in Reinforced Concrete (RC) structures, as well as the development of their modified forms to overcome limitations. The first index is based on mode shape curvature and the second index is based on the fourth derivative of the mode shape. In order to confirm the indices’ effectiveness, both eigenvalues coupled with nonlinear static analyses were carried out and the eigenvectors for two different damage locations and intensities of load were obtained from the finite element model of RC beams. The values of the damage-locating indices derived using both indices were then compared. Generally, the mode shape curvature-based index suffered from insensitivity when attempting to detect the damage location; this also applied to the mode shape fourth derivative-based index at lower modes. However, at higher modes, the mode shape fourth derivative-based index gave an acceptable indication of the damage location. Both the indices showed inconsistencies and anomalies at the supports. This study proposed modification to both indices to overcome identified flaws. The results proved that modified forms exhibited better sensitivity for identifying the damage location. In addition, anomalies at the supports were eliminated. © 2022 Techno-Press, Ltd. |
| format |
Article |
| author |
Fayyadh, Moatasem M. Razak, Hashim Abdul |
| author_facet |
Fayyadh, Moatasem M. Razak, Hashim Abdul |
| author_sort |
Fayyadh, Moatasem M. |
| title |
Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| title_short |
Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| title_full |
Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| title_fullStr |
Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| title_full_unstemmed |
Locating cracks in RC structures using mode shape-based indices and proposed modifications |
| title_sort |
locating cracks in rc structures using mode shape-based indices and proposed modifications |
| publisher |
Techno Press |
| publishDate |
2022 |
| url |
http://eprints.um.edu.my/43173/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123076813&doi=10.12989%2facd.2022.7.1.081&partnerID=40&md5=223be2c8d19bfcd07050bd12bf41efbb |
| _version_ |
1781704671807668224 |
| score |
13.211869 |