TY - JOUR
T1 - Detection of initiation of corrosion induced damage in concrete structures using nonlinear ultrasonic techniques
AU - Arumaikani, Thirumalaiselvi
AU - Sasmal, Saptarshi
AU - Kundu, Tribikram
N1 - Funding Information:
The authors would like to thank the technical and project staffs of the Special and Multifunctional Structures Laboratory (SMSL), Council of Scientific and Industrial Research-Structural Engineering and Research Centre, India, for their help during the experimental investigations. S.S. acknowledges the support in the form of the Raman Research Fellowship (RRF) received from CSIR, New Delhi, to carry out his research at the University of Arizona.
Publisher Copyright:
© 2022 Acoustical Society of America.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - Structural failure caused by corrosion of the reinforcing steel in concrete structures is quite common. In most cases, corrosion cracks appear on the surface at a late stage, leaving inadequate time for taking any measures. This paper investigates the detection of corrosion damage in reinforced concrete elements by using nonlinear ultrasonic (NLU) techniques. Various linear ultrasonic and NLU techniques were adopted to identify the most sensitive technique and ultrasonic parameters for corrosion induced damage detection at its early stage. It is observed that the linear techniques are not very effective in detecting corrosion induced damage. The sideband peak count-index (or SPC-I), a relatively new and promising technique, has been found to be an excellent indicator for the detection of corrosion induced damage initiation. However, its efficacy for detecting corrosion induced damage has not yet been reported. The present study shows that the SPC-I-based NLU technique outperforms (with the highest sensitivity) all other NLU techniques for detecting the onset of corrosion in steel and micro-crack formation in the surrounding material. As the corrosion progresses and cracks appear on the surface of the concrete, the efficiency of the SPC-I slowly weakens and other technique(s) are found to be quite efficient at that stage.
AB - Structural failure caused by corrosion of the reinforcing steel in concrete structures is quite common. In most cases, corrosion cracks appear on the surface at a late stage, leaving inadequate time for taking any measures. This paper investigates the detection of corrosion damage in reinforced concrete elements by using nonlinear ultrasonic (NLU) techniques. Various linear ultrasonic and NLU techniques were adopted to identify the most sensitive technique and ultrasonic parameters for corrosion induced damage detection at its early stage. It is observed that the linear techniques are not very effective in detecting corrosion induced damage. The sideband peak count-index (or SPC-I), a relatively new and promising technique, has been found to be an excellent indicator for the detection of corrosion induced damage initiation. However, its efficacy for detecting corrosion induced damage has not yet been reported. The present study shows that the SPC-I-based NLU technique outperforms (with the highest sensitivity) all other NLU techniques for detecting the onset of corrosion in steel and micro-crack formation in the surrounding material. As the corrosion progresses and cracks appear on the surface of the concrete, the efficiency of the SPC-I slowly weakens and other technique(s) are found to be quite efficient at that stage.
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U2 - 10.1121/10.0009621
DO - 10.1121/10.0009621
M3 - Article
C2 - 35232116
AN - SCOPUS:85125588284
SN - 0001-4966
VL - 151
SP - 1341
EP - 1352
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
IS - 2
ER -