Structural parameter identification of a bolted connection embedded with a piezoelectric interface


  • Thanh-Canh Huynh (1) Institute of Research and Development, Duy Tan University, Da Nang, Vietnam (2) Faculty of Civil Engineering, Duy Tan University, Da Nang,



bolted connection, structural identification, piezoelectric interface, impedance method, predictive modelling, model-updating


As the impedance-based technique has been commonly accepted as an innovative structural health monitoring tool, structural identification of a piezoelectric-driven system is of significant interest for damage identification and quantification. This study presents a predictive modelling strategy, which combines the finite element (FE) method with a model-updating approach, for estimating the structural parameters of a piezoelectric interface-bolted connection system. Firstly, the basic operating principle of the piezoelectric-based smart interface is introduced. Secondly, a bolted connection is selected as a host structure to conduct real impedance measurement via the smart interface. Thirdly, a numerical FE model corresponding to the experimental model is established by using a FE program, COMSOL Multiphysics. A sensitivity-based model updating algorithm is adopted to fine-tune the FE model. Finally, structural parameters of the FE model are determined as the numerical impedance signatures match with the measured ones at the same high-frequency band with identical patterns. This study is expected to open an alternative approach for determining unknown structural parameters of the piezoelectric interface-bolted joint system in practice.


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Author Biography

Thanh-Canh Huynh, (1) Institute of Research and Development, Duy Tan University, Da Nang, Vietnam (2) Faculty of Civil Engineering, Duy Tan University, Da Nang,

(Corresponding Author):


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How to Cite

Huynh, T.-C. (2020). Structural parameter identification of a bolted connection embedded with a piezoelectric interface. Vietnam Journal of Mechanics, 42(2), 173–188.



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