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http://dx.doi.org/10.7734/COSEIK.2016.29.6.513

Measurement of Liquid Oscillation in Tuned Liquid Dampers using a Laser Doppler Vibrometer  

Shin, Yoon-Soo (Division of Architectural Engineering, DanKook Univ.)
Min, Kyung-Won (Division of Architectural Engineering, DanKook Univ.)
Kim, Junhee (Division of Architectural Engineering, DanKook Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.29, no.6, 2016 , pp. 513-519 More about this Journal
Abstract
In this study, dynamic vertical displacement of liquid in the tuned liquid column damper(TLCD) is measured by a laser Doppler vibrometer(LDV) to overcome limitations of existing sensors and to leverage noncontact sensing. Addressing advantages of noncontact measurements, operational principles of the LDV to measure velocity and displacement of a target object in motion is explained. The feasibility of application of the LDV to measurement of liquid motion in the TLCD is experimentally explored. A series of shake table tests with the TLCD are performed to determine requirements of application of the LDV. Based on the experimental results, it is proved that the LDV works under the condition of adding dye to the liquid by increasing the intensity of reflected laser and thus validity is verified by comparison with a conventional wave height meter.
Keywords
fluid measurement; laser doppler vibrometer; tuned liquid column damper; vibration control device;
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Times Cited By KSCI : 2  (Citation Analysis)
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