モルタルが付加された鋼板のSH板波系ガイド波の伝搬挙動

抄録

The equipment used for excitation and detection of the SH (shear-horizontal) guided waves is similar to that used for excitation and detection of torsional modes, such as T(0,1) mode guided waves used in piping inspection. With this background, it is expected that the SH type plate waves will be used for the measurement of plate structures. On the other hand, there are not many examples that summarize the theoretical characteristics of the SH type plate waves. Here, we present theoretical solutions and velocity dispersion curves for the SH type plate waves propagating in steel/mortar plate and pseudo Love waves propagating in a steel plate on mortar substrate. Experiments were also carried out for the SH type plate waves propagating in a steel plate and a steel/mortar plate, and their group velocities were measured. The experimental results were compared with the theoretical ones, and were in good results.