Propagation Characteristics of Ultrasonic Waves in Concrete Medium with Local Damage

Abstract:

The theory of ultrasonic wave propagation characteristic in damaged concrete media was studied in this paper. Basing on the fundamentals of classical elastic dynamics and the model of damaged mechanics,the basic equations of elastic wave propagation in damaged media are established and the example analysis and a numerical calculation are displayed. The basic solutions of the equations is deducted. Because the damage exists in the construction, the concrete’s wave response comprised of the shape,the amplitude and the propagated time of the ultrasonic waves in the structure will change obviously. The transformation mentioned above is provided for further study of inverse analysis and nondestructive test of the structure.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 561-568
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.561
• Online since: May 2011
• Authors: Yuan Cao Guo, Shao Hua Guo
• Keywords: Damage Index, Damaged Concrete Medium, Elastic Dynamic, Time of Wave Propagation, Ultrasonic Wave (UW), Wave Amplitude

References

[1] S.w.Yu, X.q.Feng, The damage mechanics, 54-61, The Tsinghua University press,(1997)

[2] L.f .He, J. Liu, Acoustic elastic technique, 94-104,The Science press, (2002)

[3] A.C. Eringen, E.S. Shuhubi, elastodynamics, Acadynamic press New York and London, (1974)

[4] S.n.Luo, H.m.Cheng, The propagation waves in concrete with the local damage,The journal of Hunan University(Natural Science Edition), Vol.29, No.2.Apr.(2002)

[5] H.m.Cheng, Z.y.Cao, A study of wave propagation characters in damaged media,Chinese quarterly of mechanics, Vol.26, No.2, June (2005)

[6] Gross.D, Zhang.C.h, Wave propagation in damaged solids[J]. Int J. Solids Structures 1992,29(14/15):1763-1779

DOI: 10.1016/0020-7683(92)90169-t

[7] K.f.Han, X.w.Zeng, Boundry element modeling of elastic waves propagating in the media with randomly distributed cracks, Chinese Journal of Geotechnical Engineering, Vol.28, No.7, July (2006)

[8] B.Han, T.Zhang, A study on the amplitude of elastic wave transmission in inhomogeneous media, Transactions of Beijing Institute Technology, Vol.26, No.5, May (2006)

[9] S.n.Luo, Z.p.Zhou, H.Tong, The waves propagation in the strip region with the inhomogeneous damage, Journal of vibration and shock, Vol 25, No.5, (2006)

[10] Kevin K, Tseng, Liangsheng Wang, Structural damage identification for thin plates using smart piezoelectric transducers, Computer methods in applied mechanics and engineering, 194(2005)3192-3209

DOI: 10.1016/j.cma.2004.08.007

[11] Chee Kiong Soh, Suresh Bhalla, Calibration of piezo-impedance transducers for strength prediction and damage assessment of concrete, Smart materials and structures, 14(2005)671-684

DOI: 10.1088/0964-1726/14/4/026

[12] Yee Yan Lim, Suresh Bhalla, Chee Kiong Soh,Structural identification and damage diagnosis using self-sensing piezo-impedance transducers, Smart Mater.Struct.15(2006)987-995

DOI: 10.1088/0964-1726/15/4/012

[13] Suresh Bhalla, Chee Kiong Soh, High frequency piezoelectric signatures for diagnosis of seismic/blast induced structural damages,NDT&E international 37(2004)23-33

DOI: 10.1016/j.ndteint.2003.07.001