Abstract
Modal analysis is critical to better understand structural dynamic vibration characteristics by extracting system’s natural frequencies, damping ratios and mode shapes. Modal analysis has been widely used to structure optimization in the design stage, damage detection and structural health monitoring or condition monitoring. According to whether need artificial exaction, the modal analysis techniques can be categorized as experimental modal analysis and operational modal analysis. Conventional experimental modal analysis has to measure the excitation and corresponding response in the meantime, while operational modal analysis measure system’s response only during normal operating condition. Therefore, operational modal analysis also called output-only modal analysis methods, which have developed dramatically in recent decades because it is promising as means to achieve structural online monitoring, which is highly desirable for critical mechanical system, important buildings and bridges, etc. This paper made a brief review of the development of popular operational modal analysis techniques and their applications in condition monitoring.
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Acknowledgements
This research was supported by the Tianjin Natural Science Foundation of China (Grant No.: 18JCYBJC95200), Science & Technology Pillar Program of Tianjin (Grant No.:19YFZCSF01150) and Innovation cultivation Foundation 19-163-12-ZT-006-007-06.
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Liu, F. et al. (2023). Review of Using Operational Modal Analysis for Condition Monitoring. In: Zhang, H., Feng, G., Wang, H., Gu, F., Sinha, J.K. (eds) Proceedings of IncoME-VI and TEPEN 2021. Mechanisms and Machine Science, vol 117. Springer, Cham. https://doi.org/10.1007/978-3-030-99075-6_12
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