Abstract
Propagation characteristics of high order longitudinal modes of ultrasonic guided waves in seven-wire steel strands are investigated theoretically and experimentally. According to these analysis results, proper longitudinal modes are selected for defect detection in steel strands. Dispersion curves for helical and central wires in a 17.80 mm nominal diameter seven-wire steel strand are numerically obtained firstly, and propagation characteristics of high-order longitudinal modes, such as wave structures, attenuation and dispersion, are analyzed. In experiments, the signals of ultrasonic guided wave at different high frequencies are excited and received at one end of a steel strand by using the same single piezoelectric transducer. The identification of longitudinal modes in the received signals is achieved based on short time Fourier transform. Furthermore, appropriate L(0, 5) mode at 2.54 MHz is chosen for detecting an artificial defect in a helical wire of the steel strand. Results show that high order longitudinal modes in a high frequency range with low dispersion and attenuation whose energy propagates mainly in the center of the wires can be used for defect detection in long range steel strands.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Kear, P. and Leeming, M., Radiographic inspection of post-tensioned concrete bridges. Insight, 1994, 36(7): 507–510.
Makar, J. and Desnoyers, R., Magnetic field techniques for the inspection of steel under concrete cover. NDT&E International, 2001, 34(7): 445–456.
Yuyama, S., Yokoyama, K., Niitani, K., Ohtsu, M. and Uomoto, T., Detection and evaluation of failures in high-strength tendon of prestressed concrete bridges by acoustic emission. Construction and Building Materials, 2007, 21(3): 491–500.
Rose, J.L., Standing on the shoulders of giants: an example of guided wave inspection. Material Evaluation, 2002, 60(1): 53–59.
He, C.F., Wu, B. and Fan, J.W., Advances in ultrasonic cylindrical guided waves techniques and their applications. Advances in Mechanics, 2001, 3(2): 203–214 (in Chinese).
Liu, Z.H., He, C.F., Wu, B. and Wang, X.Y., Longitudinal modes in pipes with viscoelastic coatings. Chinese Journal of Mechanical Engineering, 2007, 43(4): 187–192 (in Chinese).
Liu, Z.H., He, C.F., Yang, S.M., Wang, X.Y. and Wu, B., Theoretical and experimental studies of longitudinal ultrasonic guided waves propagation characteristics in water-filled pipes. Chinese Journal of Mechanical Engineering, 2006, 42(3): 171–178 (in Chinese).
He, C.F., Sun, Y.X., Wu, B., Wang, X.Y. and Liu, Z.H., Propagation characteristics of high frequency longitudinal guided waves in steel rod. Chinese Journal of Theoretical and Applied Mechanics, 2007, 39(4): 538–544 (in Chinese).
He, C.F., Sun, Y.X., Wang, X.Y., Zhang, Q., Liu, Z.H., and Wu, B., Propagation characteristics of high frequency longitudinal ultrasonic guided waves in steel rod embedded in infinite medium. Chinese Journal of Mechanical Engineering, 2007, 43(3): 82–88 (in Chinese).
Wang, X.Y., Wang, Z., Jiao, J.P., Wu, B. and He, C.F., Theoretical and experimental studies of ultrasonic guided waves propagation in pipes. Chinese Journal of Mechanical Engineering, 2004, 40(1): 11–16 (in Chinese).
Liu, J.X., Li, T.Y., Liu, T.G. and Jin, L.M., Vibration characteristic analysis of buried pipes with the wave propagation approach. Acta Mechanica Solida Sinica, 2005, 26(2): 187–192 (in Chinese).
Scalea, F.L., Rizzo, P. and Seible, F., Stress measurement and defect detection in steel strands by guided stress waves. Journal of Materials in Civil Engineering, 2003, 15(3): 219–227.
Rose,J.L., Ultrasonic Waves in Solid Media. Cambridge University Press, 1999: 154–162.
Nurnberger, U., Corrosion induced failure mechanisms of prestressing steel. Materials and Corrosion, 2002, 53(8): 591–601.
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Natural Science Foundation of China (No.10602004), Beijing Natural Science Foundation (No.2072003) and Beijing Talent Developing Project (No.20081B0501500173).
Rights and permissions
About this article
Cite this article
Liu, Z., Liu, S., Wu, B. et al. Propagation characteristics of high order longitudinal modes in steel strands and their applications. Acta Mech. Solida Sin. 21, 573–579 (2008). https://doi.org/10.1007/s10338-008-0869-3
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10338-008-0869-3