Piezoelectric-based crack detection techniques of concrete structures: Experimental study

Abstract

Feasibility of a wave propagation-based active crack detection technique for nondestructive evaluations (NDE) of concrete structures with surface bonded and embedded piezoelectric-ceramic (PZT) patches was studied. At first, the wave propagation mechanisms in concrete were analyzed. Then, an active sensing system with integrated actuators/sensors was constructed. One PZT patch was used as an actuator to generate high frequency waves, and the other PZT patches were used as sensors to detect the propagating wave. Scattered wave signals from the damage can be obtained by subtracting the baseline signal of the intact structure from the recorded signal of the damaged structure. In the experimental study, progressive cracked damage inflicted artificially on the plain concrete beam is assessed by using both lateral and thickness modes of the PZT patches. The results indicate that with the increasing number and severity of cracks, the magnitude of the sensor output decreases for the surface bonded PZT patches, and increases for the embedded PZT patches.

Keywords

concrete structures / crack detection / health monitoring / PZT / wave propagation method

References

[1] Ou J. P., Li H. Structural Health Monitoring in Mainland China: Review and Future Trends[J]. Structural Health Monitoring, 2010, 9(3): 219-232.

[2] Tseng K. K., Wang L. S. Smart Piezoelectric Transducers for in Situ Health Monitoring of Concrete[J]. Smart Mater. and Struct., 2004, 13(5): 1 017-1 024.

[3] Tseng K. K., Wang L. S. Impedance-based Method for Nondestructive Damage Identification[J]. ASCE J. Eng. Mech., 2005, 131(1): 58-64.

[4] Ayres J. W., Lalande F., Chaudhry Z., . Qualitative Impedance-based Health Monitoring of Civil Infrastructures[J]. Smart Mater. and Struct., 1998, 7(5): 599-605.

[5] Park S., Ahmad S., Yun C. B., . Multiple Crack Detection of Concrete Structures Using Impedance-based Structural Health Monitoring Techniques[J]. Experimental Mechanics, 2006, 46(5): 609-618.

[6] Soh C. K., Tseng K. K., Bhalla S., . Performance of Smart Piezocer-Amic Patches in Health Monitoring of a RC Bridge[J]. Smart Mater. and Struct., 2000, 10(9): 533-542.

[7] Soh C. K., Bhalla S. Calibration of Piezo-impedance Transducers for Strength Prediction and Damage Assessment of Concrete[J]. Smart Mater. and Struct., 2005, 14(4): 671-684.

[8] Tawie R., Lee H. K. Monitoring the Strength Development in Concrete by EMI Sensing Technique[J]. Constr. and Build. Mater., 2010, 24(9): 1 746-1 753.

[9] Tawie R., Lee H. K. Piezoelectric-based Non-destructive Monitoring of Hydration of Reinforced Concrete as an Indicator of Bond Development at the Steel-concrete Interface[J]. Cement and Concrete Research, 2010, 40(12): 1 697-1 703.

[10] Gallo G. E., Popovics J. S. The Use of Surface Waves to Estimate in-place Strength of Concrete[J]. Journal of Advance Concrete Technology, 2005, 3(2): 355-362.

[11] Song F., Huang G. L., Kim J. H., . On the Study of Surface Wave Propagation in Concrete Structures Using a Piezoelectric Actuator/ Sensor System[J]. Smart Mater. and Struct., 2008, 17(5): 1-8.

[12] Sun M. Q., Staszewski W. J., Swamy R. N., . Application of Lowprofile Piezoceramic Transducers for Health Monitoring of Concrete Structures[J]. NDT&E Inter., 2008, 41(8): 589-595.

[13] Zhu J. S., He L. K. Study on Piezoelectric Actuator/sensor Wave Propagation Based Nondestructive Active Monitoring Method of Concrete Structures[J]. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2011, 26(3): 541-547.

[14] Song G. B., Gu H. C., Mo Y. L. Smart Aggregates: Multi-functional Sensors for Concrete Structures-a Tutorial and a Review[J]. Smart Mater. and Struct., 2008, 17(3): 1-8.

[15] Song G. B., Olmi C., Gu H. C. An Overheight Vehicle-bridge Collision Monitoring System Using Piezoelectric Transducer [J]. Smart Mater. and Struct., 2007, 16(2): 462-468.

[16] Song G. B., Gu H. C., Mo Y. L., . Concrete Structural Health Monitoring Using Rmbedded Piezoceramic Transducers[J]. Smart Mater. and Struct., 2007, 16: 959-968.

[17] Liao W I, Gu H C, Olmi C, et al. Structural Health Monitoring of a Concrete Column Subjected to Shake Table Excitations Using Smart Aggregates[C]. Intelligent Sensor and Actuator Symp. at ASCE Earth and Space Conf., Long Beach, CA, 2008.doi:10.1061/40988(323)169

[18] Laskar A., Gu H. C., Mo Y. L., . Progressive Collapse of a Two-story Reinforced Concrete Frame with Embedded Smart Aggregates[J]. Smart Mater. and Struct., 2009, 18(7): 75-84.

[19] Yan S., Sun W., Song G. B., . Health Monitoring of Reinforced Concrete Shear Walls Using Smart Aggregates[J]. Smart Mater. and Struct., 2009, 18(7): 47-52.

[20] Giurgiutiu V, Bao J, Zhao W. Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures[C]. In:Proceedings of the SPIE’s 8th International Symposium on Smart Structures and Materials, 4–8 March 2001, Newport Beach, CA

[21] Hu Y. H., Yang Y. W. Wave Propagation Modeling of the PZT Sensing Region for Structural Health Monitoring[J]. Smart Mater. and Struct., 2007, 16(3): 706-716.