Sensitivity-enhanced admittance-based structure health monitoring using a higher-order resonant circuit

An admittance-based structure health monitoring method with a higher-order resonant circuit is proposed and investigated in this paper, with the advantage of increased damage detection sensitivity. The change of the stiffness or mass in the structure due to damage can be detected by measuring the admittance from the piezoelectric transducer adhered to the host structure. It is known that designing an inductive circuitry, together with the piezoelectric capacitance, can introduce an additional resonance and yield enhanced sensitivity. In this paper, based on the electrical–mechanical analogy, a novel higher-order resonant circuit is designed and optimized to significantly improve the damage detection capability, i.e. increasing the admittance magnitude and its sensitivity to damage. Theoretical analyses and simulations are carried out. The results show that the peak admittance magnitude is increased by 74 dB for the higher-order circuit without electrical damping and 46 dB with electrical damping, when comparing with the second-order circuit system. The damage detection sensitivity is increased by 33 dB and 36 dB for a stiffness change of 0.5% and 1%, respectively, by using the proposed higher-order circuit, when comparing with the second-order circuit system, and even more when comparing with the traditional method with only a resistor.

[1]  Nesbitt W. Hagood,et al.  Damping of structural vibrations with piezoelectric materials and passive electrical networks , 1991 .

[2]  Daniel J. Inman,et al.  Estimation of Electric Charge Output for Piezoelectric Energy Harvesting , 2004 .

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

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

[5]  Suresh Bhalla,et al.  Practical issues in the implementation of electro-mechanical impedance technique for NDE , 2002, SPIE Micro + Nano Materials, Devices, and Applications.

[6]  Lei Zuo,et al.  Effective and Robust Vibration Control Using Series Multiple Tuned-Mass Dampers , 2009 .

[7]  Wei-Hsin Liao,et al.  Energy flow in piezoelectric energy harvesting systems , 2010 .

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

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

[10]  Anil Kishore Saxena,et al.  Comparison of temperature coefficient of standard inductor by measuring change in inductance and resistance , 2010, CPEM 2010.

[11]  Xin Wang,et al.  An enhanced piezoelectric impedance approach for damage detection with circuitry integration , 2010 .

[12]  Suresh Bhalla,et al.  Ultra Low-cost Adaptations of Electro-mechanical Impedance Technique for Structural Health Monitoring , 2009 .

[13]  Jiong Tang,et al.  Damage Detection Using Piezoelectric Admittance Approach with Inductive Circuitry , 2010 .

[14]  Craig A. Rogers,et al.  Local-area health monitoring of aircraft via piezoelectric actuator/sensor patches , 1995, Smart Structures.

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

[16]  A. Bloch,et al.  Electromechanical analogies and their use for the analysis of mechanical and electromechanical systems , 1945 .

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

[18]  Jiong Tang,et al.  Damage Identification Using Piezoelectric Impedance Approach and Spectral Element Method , 2009 .

[19]  M. J. Bibby,et al.  Case study 5: Processing to produce automobile radiators , 1999 .

[20]  W. W. Rhodes,et al.  High dielectric constant and small temperature coefficient bismuth-based dielectric compositions , 1990 .