Experimental validation of dynamic based damage locating indices in RC structures
Document Type
Article
Publication Date
10-1-2022
Abstract
This paper presents experimental modal analysis and static load testing results to validate the accuracy of dynamic parameters-based damage locating indices in RC structures. The study investigates the accuracy of different dynamic-based damage locating indices compared to observed crack patterns from static load tests and how different damage levels and scenarios impact them. The damage locating indices based on mode shape curvature and mode shape fourth derivate in their original forms were found to show anomalies along the beam length and at the supports. The modified forms of these indices show higher sensitivity in locating single and multi-cracks at different damage scenarios. The proposed stiffness reduction index shows good sensitivity in detecting single and multi-cracks. The proposed anomalies elimination procedure helps to remove the anomalies along the beam length. Also, the adoption of the proposed weighting method averaging procedure and normalization procedure help to draw the overall crack pattern based on the adopted set of modes.
Keywords
Anomalies elimination procedures, Damage locating, Dynamic parameters, Modal testing, Weighting and normalization procedures
Divisions
sch_civ
Funders
Universiti Malaya
Publication Title
Structural Engineering and Mechanics
Volume
84
Issue
2
Publisher
Structural Engineering and Mechanics
Publisher Location
PO BOX 33, YUSEONG, DAEJEON 305-600, SOUTH KOREA