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Compensation of temperature effect on impedance responses of PZT interface for prestress-loss monitoring in PSC girders
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  • Journal title : Smart Structures and Systems
  • Volume 17, Issue 6,  2016, pp.881-901
  • Publisher : Techno-Press
  • DOI : 10.12989/sss.2016.17.6.881
 Title & Authors
Compensation of temperature effect on impedance responses of PZT interface for prestress-loss monitoring in PSC girders
Huynh, Thanh-Canh; Kim, Jeong-Tae;
 Abstract
In this study, a method to compensate the effect of temperature variation on impedance responses which are used for prestress-loss monitoring in prestressed concrete (PSC) girders is presented. Firstly, an impedance-based technique using a mountable lead-zirconate-titanate (PZT) interface is presented for prestress-loss monitoring in the local tendon-anchorage member. Secondly, a cross-correlation-based algorithm to compensate the effect of temperature variation in the impedance signatures is outlined. Thirdly, lab-scale experiments are performed on a PSC girder instrumented with a mountable PZT interface at the tendon-anchorage. A series of temperature variation and prestress-loss events are simulated for the lab-scale PSC girder. Finally, the feasibility of the proposed method is experimentally verified for prestress-loss monitoring in the PSC girder under temperature-varying conditions and prestress-loss events.
 Keywords
impedance monitoring;mountable PZT interface;prestress force monitoring;tendon-anchorage;PSC girders;temperature effect;temperature compensation;
 Language
English
 Cited by
1.
Quantification of temperature effect on impedance monitoring via PZT interface for prestressed tendon anchorage, Smart Materials and Structures, 2017, 26, 12, 125004  crossref(new windwow)
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