The Influence of Surface Opening Crack on the Ultrasonic Waves Near the Surface in Concrete Members

DOI

10.2991/icmeim-17.2017.64How to use a DOI?

Keywords

NDT, Concrete, Surface-opening Crack, Rayleigh Wave

Abstract

Based on the velocities of waves near the surface in concrete, the propagation path and travel time of different waves were calculated, and the influence of crack on these waves was analyzed. Some theoretical conclusions were verified by FEM. The ultrasonic waves were received by array transducers and the velocities of different waves were calculated and distinguished according to travel time in the simulation. Simulation results show that when sound wave propagates through the crack, longitudinal waves arrive at the receiving arrays and the crack diffracts transverse wave to generate new longitudinal wave and transverse wave by mode conversion, and the Rayleigh wave propagates along the surface (including the crack side walls). Finally it is found that the receiving signal amplitude (energy) is approximately linearly monotone decreasing with crack depth.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Peng Wang
AU  - Qing-bang Han
AU  - Xue-ping Jiang
AU  - Hao Zheng
AU  - Zhou-chen Xu
PY  - 2017/02
DA  - 2017/02
TI  - The Influence of Surface Opening Crack on the Ultrasonic Waves Near the Surface in Concrete Members
BT  - Proceedings of the 2017 International Conference on Manufacturing Engineering and Intelligent Materials (ICMEIM 2017)
PB  - Atlantis Press
SP  - 380
EP  - 387
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmeim-17.2017.64
DO  - 10.2991/icmeim-17.2017.64
ID  - Wang2017/02
ER  -