8 March 2014 Health monitoring of fluid dampers for vibration control of structures: experimental investigation
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Abstract
This paper presents results from a comprehensive experimental program on medium-size and large-size fluid dampers in an effort to extract their force output during cyclic loading by simply measuring the strain on the damper housing and the end-spacer. The paper first discusses the stress path within the damper and subsequently via the use of linear elasticity shows that the experimental data obtained with commercially available strain gauges yield a force output of the damper that is in good agreement with the readings from the load cell. The paper then examines the performance of a portable data acquisition system that can be used to collect and transmit data from a damper installed on a bridge to a nearby location. The data show that the proposed arrangement is promising for monitoring in-situ the force output of fluid dampers and detecting possible loss of their energy dissipation capability.
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Dimitrios Konstantinidis, Nicos Makris, James M. Kelly, "Health monitoring of fluid dampers for vibration control of structures: experimental investigation", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90613I (8 March 2014); doi: 10.1117/12.2044888; https://doi.org/10.1117/12.2044888
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