IWSHM 2017: Vibration-based damage localization and estimation via the stochastic functional model–based method: An overview
Author(s): |
John S. Sakellariou
Spilios D. Fassois Christos S. Sakaris |
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Medium: | journal article |
Language(s): | English |
Published in: | Structural Health Monitoring, December 2017, n. 6, v. 17 |
Page(s): | 1335-1348 |
DOI: | 10.1177/1475921718793577 |
Abstract: |
The functional model–based method is a unique vibration-based approach to damage localization and magnitude estimation in structures under normal operation, capable of operating on naturally arising random vibration signals without human intervention. It employs an innovative data-based stochastic functional model representing the partial dynamics under various damage scenarios, estimation techniques, and statistical hypothesis testing. Unlike alternative vibration methods employing data-based models but treat the localization and magnitude estimation approximately, as classification problems, it handles them properly as estimation problems. Among its remarkable properties is its ability to operate with a low number of vibration response sensors and low- and limited-frequency bandwidth, characteristics important in many applications. In this article, an overview of the method and its principles are presented, along with three validation case studies. |
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10562209 - Published on:
11/02/2021 - Last updated on:
19/02/2021