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http://dx.doi.org/10.12989/sss.2015.15.2.375

Local dynamic characteristics of PZT impedance interface on tendon anchorage under prestress force variation  

Huynh, Thanh-Canh (Department of Ocean Engineering, Pukyong National University)
Lee, Kwang-Suk (Department of Ocean Engineering, Pukyong National University)
Kim, Jeong-Tae (Department of Ocean Engineering, Pukyong National University)
Publication Information
Smart Structures and Systems / v.15, no.2, 2015 , pp. 375-393 More about this Journal
Abstract
In this study, local dynamic characteristics of mountable PZT interfaces are numerically analyzed to verify their feasibility on impedance monitoring of the prestress-loss in tendon anchorage subsystems. Firstly, a prestressed tendon-anchorage system with mountable PZT interfaces is described. Two types of mountable interfaces which are different in geometric and boundary conditions are designed for impedance monitoring in the tendon-anchorage subsystems. Secondly, laboratory experiments are performed to evaluate the impedance monitoring via the two mountable PZT interfaces placed on the tendon-anchorage under the variation of prestress forces. Impedance features such as frequency-shifts and root-mean-square-deviations are quantified for the two PZT interfaces. Finally, local dynamic characteristics of the two PZT interfaces are numerically analyzed to verify their performances on impedance monitoring at the tendon-anchorage system. For the two PZT interfaces, the relationships between structural parameters and local vibration responses are examined by modal sensitivity analyses.
Keywords
local dynamic; PZT interface; tendon anchorage; prestress force; impedance signature; modal analysis; modal sensitivity;
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Times Cited By KSCI : 8  (Citation Analysis)
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