Application of multifractal detrended fluctuation analysis for structural health monitoring

Haikal Fajri, Tzu-Kang Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an application of multifractal detrended fluctuation analysis (MF-DFA) for structural health monitoring (SHM). To demonstrate the performance of proposed SHM algorithm for detecting and locating the damage, structure response of seven-story scale-down benchmark measured from ambient vibration was evaluated. It was found that damage condition due to stiffness change was effectively detected by using multifractal spectrum peak value of a single sensor under different damage categories. Moreover, the damage location was discovered after analyzing the signals of the entire floors under the same damage categories by using MF-DFA analysis. The multifractal spectrums of damage cases were subsequently compared with the healthy structure to distinctly assess the damage location. The result revealed that the damage location was correctly predicted as the shifted spectrum trend of the proposed SHM-based system. As it offers an alternative choice of the traditional SHM system with a set of initial reference, and only ambient vibration signal is required, the proposed SHM system is a promising tool in the practical implementation.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2015
Subtitle of host publicationSystem Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
EditorsFu-Kuo Chang, Fotis Kopsaftopoulos
PublisherDEStech Publications
Pages1147-1154
Number of pages8
ISBN (Electronic)9781605951119
DOIs
StatePublished - 1 Jan 2015
Event10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015 - Stanford, United States
Duration: 1 Sep 20153 Sep 2015

Publication series

NameStructural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
Volume2

Conference

Conference10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015
CountryUnited States
CityStanford
Period1/09/153/09/15

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  • Cite this

    Fajri, H., & Lin, T-K. (2015). Application of multifractal detrended fluctuation analysis for structural health monitoring. In F-K. Chang, & F. Kopsaftopoulos (Eds.), Structural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015 (pp. 1147-1154). (Structural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015; Vol. 2). DEStech Publications. https://doi.org/10.12783/SHM2015/144