Structural health monitoring using piezoelectric impedance measurements

This paper presents an overview and recent advances in impedance-based structural health monitoring. The basic principle behind this technique is to apply high-frequency structural excitations (typically greater than 30 kHz) through surface-bonded piezoelectric transducers, and measure the impedance of structures by monitoring the current and voltage applied to the piezoelectric transducers. Changes in impedance indicate changes in the structure, which in turn can indicate that damage has occurred. An experimental study is presented to demonstrate how this technique can be used to detect structural damage in real time. Signal processing methods that address damage classifications and data compression issues associated with the use of the impedance methods are also summarized. Finally, a modified frequency-domain autoregressive model with exogenous inputs (ARX) is described. The frequency-domain ARX model, constructed by measured impedance data, is used to diagnose structural damage with levels of statistical confidence.

[1]  Daniel J. Inman,et al.  Impedance-Based Structural Health Monitoring for Temperature Varying Applications , 1999 .

[2]  Suresh Bhalla,et al.  Structural Health Monitoring by Piezo-Impedance Transducers. I: Modeling , 2004 .

[3]  Hoon Sohn,et al.  Overview of Piezoelectric Impedance-Based Health Monitoring and Path Forward , 2003 .

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

[5]  Daniel J. Inman,et al.  Feasibility of using impedance‐based damage assessment for pipeline structures , 2001 .

[6]  D. Inman.  Smart structures solutions to vibration problems , 1998 .

[7]  Charles R. Farrar,et al.  An Outlier Analysis Framework for Impedance-based Structural Health Monitoring , 2005 .

[8]  C. Liang,et al.  Coupled Electro-Mechanical Analysis of Adaptive Material Systems-Determination of the Actuator Power Consumption and System Energy Transfer , 1997 .

[9]  Suresh Bhalla,et al.  Performance of smart piezoceramic patches in health monitoring of a RC bridge , 2000 .

[10]  C. Liang,et al.  Truss Structure Integrity Identification Using PZT Sensor-Actuator , 1995 .

[11]  E. Crawley,et al.  Detailed models of piezoceramic actuation of beams , 1989 .

[12]  Hoon Sohn,et al.  Active sensing using impedance‐based ARX models and extreme value statistics for damage detection , 2005 .

[13]  Victor Giurgiutiu,et al.  Piezoelectric Wafer Embedded Active Sensors for Aging Aircraft Structural Health Monitoring , 2002 .

[14]  Douglas E. Adams.  FREQUENCY DOMAIN ARX MODEL AND MULTI-HARMONIC FRF ESTIMATORS FOR NON-LINEAR DYNAMIC SYSTEMS , 2002 .

[15]  Craig A. Rogers,et al.  MONITORING THE INTEGRITY OF COMPOSITE PATCH STRUCTURAL REPAIR VIA PIEZOELECTRIC ACTUATORS/SENSORS , 1995 .

[16]  Daniel J. Inman,et al.  Improving Accessibility of the Impedance-Based Structural Health Monitoring Method , 2004 .

[17]  Ephrahim Garcia,et al.  A Self-Sensing Piezoelectric Actuator for Collocated Control , 1992 .

[18]  Suresh Bhalla,et al.  Structural impedance based damage diagnosis by piezo‐transducers , 2003 .

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

[20]  Charles R. Farrar,et al.  Structural Health Monitoring Using Statistical Pattern Recognition Techniques , 2001 .

[21]  K. Tseng,et al.  Non-parametric damage detection and characterization using smart piezoceramic material , 2002 .

[22]  Suresh Bhalla,et al.  High frequency piezoelectric signatures for diagnosis of seismic/blast induced structural damages , 2004 .

[23]  A. Naidu,et al.  Identifying Damage Location with Admittance Signatures of Smart Piezo-Transducers , 2004 .

[24]  Daniel J. Inman,et al.  Impedance-Based Structural Health Monitoring with Artificial Neural Networks , 2000 .

[25]  K. Worden,et al.  STATISTICAL DAMAGE CLASSIFICATION USING SEQUENTIAL PROBABILITY RATIO TESTS. , 2002 .

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

[27]  Craig A. Rogers,et al.  Effects of temperature on the electrical impedance of piezoelectric sensors , 1996, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.