Damage Detection in Structures Using Electromechanical Impedance and Finite Element Analysis

Abstract:

Impedance-based structural health monitoring (SHM) techniques have been developed as a promising tool for real-time structural damage assessment, and are considered as a new non-destructive evaluation method. It is gaining popularity due to its potential of reducing maintenance costs while increasing safety and reliability. This article present the results of Finite Element analysis performed for aluminum beam with bonded piezoelectric transducer (PZT). Modeled structure was excited to vibrate at high frequency range and electromechanical impedance (EMI) plots were obtained from the harmonic analysis. Notches were introduced in the beam and the damage metrics were used to asses qualitative changes in structural properties of the system. Furthermore, a parametric study of the effects of different variables was carried out. The numerical results show a good agreement was observed.

• Periodical: Applied Mechanics and Materials (Volumes 799-800)
• Pages: 971-975
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.799-800.971
• Online since: October 2015
• Authors: Mohamed Djemana, Meftah Hrairi*
• Keywords: Electro Mechanical Impedance (EMI), Piezoelectric (PZT) Transducer, Structural Health Monitoring (SHM)

References

[1] W. Yan, J.B. Cai, and W.Q. Chen, (2011). An electro-mechanical impedance model of a cracked composite beam with adhesively bonded piezoelectric patches. Journal of Sound and Vibration, 330(2): 287-307.

DOI: 10.1016/j.jsv.2010.08.013

[2] S. Na, and H.K. Lee, (2013). Steel wire electromechanical impedance method using a piezoelectric material for composite structures with complex surfaces. Composite Structures, 98: 79-84.

DOI: 10.1016/j.compstruct.2012.10.046

[3] C. Liang, F.P. Sun, and C.A. Rogers, (1994).

[4] S. Mall, (2002). Integrity of Graphite/Epoxy Laminate Embedded with Piezoelectric Sensor/Actuator under Monotonic and Fatigue Loads. Smart Materials and Structures, 11: 527-533.

DOI: 10.1088/0964-1726/11/4/307

[5] M.K. Kim, E.J. Kim, Y.K. An, H.W. Park, and H. Sohn, (2011). Reference-free impedance-based crack detection in plates. Journal of Sound and Vibration, 330(24): 5949-5962.

DOI: 10.1016/j.jsv.2011.07.025

[6] V.G.M. Annamdas, and C.K. Soh, (2008). Three-dimensional Electromechanical Impedance Model for Multiple Piezoceramic Transducers Structure Interaction. Journal of Aerospace Engineering, ASCE, 21: 35-44.

DOI: 10.1061/(asce)0893-1321(2008)21:1(35)

[7] L. Xu, S.F. Ling, B. Lu, H. Li, and H. Hu, (2006). Sensing capability of a PZT-driven cantilever actuator. Sensors and Actuators A: Physical, 127(1): 1-8.

DOI: 10.1016/j.sna.2005.07.027

[8] M. Abe, G. Park, and D.J. Inman, (2000). Impedance-based Monitoring of Stress in Thin Structural Members. In: Proceedings of Adaptive Structures and Technologies, Nagoya, Japan, pp.285-292.

[9] V.G.M. Annamdas, Y.W. Yang, and C.K. Soh, (2007). Influence of Loading on Electromechanical Admittance of Piezoceramic Transducers. Smart Materials and Structures, 16: 1888-1897.

DOI: 10.1088/0964-1726/16/5/045

[10] W.P. Liu, V. Giurgiutiu. (2007). Finite Element Simulation of Piezoelectric Wafer Active Sensors for Structural Health Monitoring with Coupled-Filed Elements. Department of Mechanical Engineering, Univ. of South Carolina, Columbia, SC USA 29208.

DOI: 10.1117/12.715238

[11] M. Rosiek, A. Martowicz, T. Uhl, (2010). Uncertainty and sensitivity analysis of Electro-Mechanical Impedance based SHM systems. IOP Conf. Series: Materials Science and Engineering. IOP Publishing. (10) pp.1-9.

DOI: 10.1088/1757-899x/10/1/012207