J0420203 半解析的有限要素法による漏洩ラム波の過渡応答解析

抄録

We calculated transient waves in a steel plate loaded with water on a single side for dynamic loading from a point source on the other water-free surface. The calculation results proved that a quasi-Scholte wave is promising for long range inspection of water-loaded plates due to its prominent characteristics of small-dispersion and zero-attenuation. The quasi-Scholte wave has superior generation efficiency in low frequency range due to its broad energy distribution across the plate thickness, while it is localized near the plate-water interface at higher frequencies, which means that it has superior detectability of inner defects.