Practical issues related to the application of the electromechanical impedance technique in the structural health monitoring of civil structures: II. Numerical verification

This paper, the second in a two-part series, presents various finite element simulations on the interaction between a piezo-impedance transducer (lead zirconate titanate, PZT) and a structure, inclusive of the bonding layer, in the application of the electromechanical impedance (EMI) technique with varying temperature. Simulation of the PZT–structure interaction at the high frequency range (up to 1000 kHz) using the commercially available finite element method (FEM) software, ANSYS version 8.1, was successfully performed. Promising results were found when compared to the experimental results. Advantages over the conventional finite element analysis (FEA) based impedance model and the impedance based analytical models include higher accuracy, direct acquisition of electrical admittance/impedance, and the ability to model the PZT and the bonding layer as well as the ambient temperature. This finite element model also successfully verified some vital experimental observations in part I. This study proves that the FEM could emerge as an excellent alternative to experimentation in the study of the EMI technique.

[1]  T. Ikeda.  Fundamentals of piezoelectricity , 1990 .

[2]  Suresh. Bhalla,et al.  SMART SYSTEM BASED AUTOMATED HEALTH MONITORING OF STRUCTURES , 2001 .

[3]  Jianfeng Xu,et al.  Electromechanical Impedance-Based Structural Health Monitoring with Evolutionary Programming , 2004 .

[4]  Yaowen Yang,et al.  Practical issues related to the application of the electromechanical impedance technique in the structural health monitoring of civil structures: I. Experiment , 2008 .

[5]  Yaowen Yang,et al.  Sensitivity of PZT Impedance Sensors for Damage Detection of Concrete Structures , 2008, Sensors.

[6]  Victor Giurgiutiu,et al.  Finite element simulation of piezoelectric wafer active sensors for structural health monitoring with coupled-filed elements , 2007, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[7]  Victor Giurgiutiu,et al.  Electro-Mechanical Impedance Method for Crack Detection in Thin Plates , 2001 .

[8]  Chee Kiong Soh,et al.  An electromechanical impedance model of a piezoceramic transducer-structure in the presence of thick adhesive bonding , 2007 .

[9]  C. Liang,et al.  Electro-mechanical impedance modeling of active material systems , 1996 .

[10]  Jian Zhao,et al.  Monitoring of rocks using smart sensors , 2007 .

[11]  Craig A. Rogers,et al.  Coupled Electro-Mechanical Analysis of Adaptive Material Systems — Determination of the Actuator Power Consumption and System Energy Transfer , 1994 .

[12]  Daniel J. Inman,et al.  IMPEDANCE-BASED HEALTH MONITORING OF CIVIL STRUCTURAL COMPONENTS , 2000 .

[13]  Yaowen Yang,et al.  Electromechanical impedance modeling of PZT transducers for health monitoring of cylindrical shell structures , 2008 .

[14]  Suresh Bhalla,et al.  A mechanical impedance approach for structural identification, health monitoring and non-destructive evaluation using piezo-impedance transducers. , 2004 .

[15]  Yaowen Yang,et al.  Influence of loading on the electromechanical admittance of piezoceramic transducers , 2007 .

[16]  Daniel J. Inman,et al.  An Integrated Health Monitoring Technique Using Structural Impedance Sensors , 2000 .

[17]  Jianfeng Xu,et al.  Generic Impedance-Based Model for Structure-Piezoceramic Interacting System , 2005 .

[18]  Gui-Rong Liu,et al.  A Modified Electro-Mechanical Impedance Model of Piezoelectric Actuator-Sensors for Debonding Detection of Composite Patches , 2002 .

[19]  Chee Kiong Soh,et al.  Effects of adhesive on the electromechanical response of a piezoceramic-transducer-coupled smart system , 2003, Other Conferences.

[20]  Andrei N Zagrai,et al.  Damage Identification in Aging Aircraft Structures with Piezoelectric Wafer Active Sensors , 2004 .

[21]  Craig A. Rogers,et al.  Qualitative impedance-based health monitoring of civil infrastructures , 1998 .

[22]  Yaowen Yang,et al.  Wave propagation modeling of the PZT sensing region for structural health monitoring , 2007 .

[23]  Victor Giurgiutiu,et al.  Characterization of Piezoelectric Wafer Active Sensors , 2000 .

[24]  Chao Wang,et al.  Application of Multiplexed FBG and PZT Impedance Sensors for Health Monitoring of Rocks , 2008, Sensors.

[25]  T. Makkonen,et al.  Finite element simulations of thin-film composite BAW resonators , 2001, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[26]  C. A. Rogers,et al.  Integration and Design of Piezoceramic Elements in Intelligent Structures , 1995 .