Reference-free determination of debonding length in reinforced concrete beams using guided wave propagation

Abstract This paper presents theoretical and experimental investigations of guided wave propagation in reinforced concrete beams, with pre-existing debonding between steel rebars and concrete blocks, for the purpose of damage detection. The primary aim of these investigations was a detailed analysis of the possible applications of wave propagation in single and multiple debonding detection in reinforced concrete structures and reference-free determination of their total length. Guided waves were excited and measured with the use of piezoelectric sensors in reinforced concrete beams with varying debonding lengths between steel rebars and concrete cover. The influence of damage on wave propagation velocity in both debonded and fully bonded rods was investigated. The effectiveness of the proposed debonding length determination method, which takes advantage of the fastest mode velocity in concrete specimen, was confirmed experimentally.

[1]  F. Chang,et al.  Debond Detection using Embedded Piezoelectric Elements in Reinforced Concrete Structures - Part I: Experiment , 2006 .

[2]  H. Lamb.  On waves in an elastic plate , 1917 .

[3]  Paolo Bocchini,et al.  Graphical User Interface for Guided Acoustic Waves , 2011, J. Comput. Civ. Eng..

[4]  Xinqun Zhu,et al.  Guided wave propagation and spectral element method for debonding damage assessment in RC structures , 2009 .

[5]  F. Chang,et al.  Debond Detection using Embedded Piezoelectric Elements for Reinforced Concrete Structures - Part II: Analysis and Algorithm , 2006 .

[6]  A. Mukherjee,et al.  Longitudinal Guided Waves for Monitoring Chloride Corrosion in Reinforcing Bars in Concrete , 2010 .

[7]  C. Chree.  The Equations of an Isotropic Elastic Solid in Polar and Cylindrical Co-ordinates their Solution and Application , 1889 .

[8]  L. Pochhammer.  Beitrag zur Theorie der Biegung des Kreiscylinders. , 2022 .

[9]  Keng-Tsang Hsu,et al.  Using Lamb Waves to Evaluate Debonding of Steel Plate Strengthened Concrete , 2012 .

[10]  Tao Ruan,et al.  Inspection of reinforced concrete interface delamination using ultrasonic guided wave non-destructive test technique , 2012 .

[11]  Qiang Han,et al.  Numerical investigation of dispersion relations for helical waveguides using the Scaled Boundary Finite Element method , 2014 .

[12]  Beata Zima,et al.  Guided ultrasonic waves for detection of debonding in bars partially embedded in grout , 2018 .

[13]  Ye Lu,et al.  Guided waves for debonding identification in CFRP-reinforced concrete beams , 2017 .

[14]  Hoon Sohn,et al.  Reference-Free NDT Technique for Debonding Detection in CFRP-Strengthened RC Structures , 2007 .

[15]  Fabien Treyssède,et al.  Numerical investigation of elastic modes of propagation in helical waveguides. , 2007, The Journal of the Acoustical Society of America.

[16]  L. Dongsheng,et al.  Inspection of reinforced concrete interface delamination using ultrasonic guided wave non-destructive test technique , 2012 .

[17]  H. Hao,et al.  Detection of delamination between steel bars and concrete using embedded piezoelectric actuators/sensors , 2013 .

[18]  Sergey Sorokin,et al.  On accuracy of the wave finite element predictions of wavenumbers and power flow: A benchmark problem , 2011 .

[19]  Hyung Jin Lim,et al.  Reference‐free delamination detection using Lamb waves , 2013 .

[20]  J. Rose.  Ultrasonic Waves in Solid Media , 1999 .

[21]  Tribikram Kundu,et al.  Lamb Waves for Detecting Delamination between Steel Bars and Concrete , 2003 .

[22]  Beata Zima,et al.  Detection of debonding in steel bars embedded in concrete using guided wave propagation , 2016 .

[23]  Beata Zima,et al.  Guided wave propagation for assessment of adhesive bonding between steel and concrete , 2017 .