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Materials 2017, 10(8), 866;

Output-Based Structural Damage Detection by Using Correlation Analysis Together with Transmissibility

Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
Engineering Research Center of Railway Environmental Vibration and Noise of the Ministry of Education, East China Jiaotong University, Nanchang 330013, China
Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam
Soete Laboratory, Faculty of Engineering and Architecture, Ghent University, Technologiepark Zwijnaarde 903, B-9052 Zwijnaarde, Belgium
Author to whom correspondence should be addressed.
Received: 30 May 2017 / Revised: 23 July 2017 / Accepted: 26 July 2017 / Published: 27 July 2017
(This article belongs to the Special Issue Structural Health Monitoring for Aerospace Applications 2017)
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Output-based structural damage detection is becoming increasingly appealing due to its potential in real engineering applications without any restriction regarding excitation measurements. A new transmissibility-based damage detection approach is presented in this study by combining transmissibility with correlation analysis in order to strengthen its performance in discriminating damaged from undamaged scenarios. From this perspective, damage detection strategies are hereafter established by constructing damage-sensitive indicators from a derived transmissibility. A cantilever beam is numerically analyzed to verify the feasibility of the proposed damage detection procedure, and an ASCE (American Society of Civil Engineers) benchmark is henceforth used in the validation for its application in engineering structures. The results of both studies reveal a good performance of the proposed methodology in identifying damaged states from intact states. The comparison between the proposed indicator and the existing indicator also affirms its applicability in damage detection, which might be adopted in further structural health monitoring systems as a discrimination criterion. This study contributed an alternative criterion for transmissibility-based damage detection in addition to the conventional ones. View Full-Text
Keywords: damage detection; transmissibility; dynamic analysis; correlation analysis damage detection; transmissibility; dynamic analysis; correlation analysis

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Zhou, Y.-L.; Cao, H.; Liu, Q.; Wahab, M.A. Output-Based Structural Damage Detection by Using Correlation Analysis Together with Transmissibility. Materials 2017, 10, 866.

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