Modeling guided wave propagation with application to the long-range defect detection in railroad tracks |
| |
Authors: | Ivan Bartoli Francesco Lanza di Scalea Mahmood Fateh Erasmo Viola |
| |
Abstract: | The aim of this work is to demonstrate the use of a commercial finite element package, ABAQUS EXPLICIT, to model ultrasonic guided waves in structural components. The particular application of interest is modeling the interaction of a broadband vertical bending mode with transverse-type defects in railroad tracks. This topic is part of a broader project on high-speed defect detection in rails by long-range ultrasonic inspections. Reflection coefficient spectra in the 20–45 kHz range are obtained for four different sizes and three different orientations of transverse head flaws. A preliminary study of Lamb waves in a free plate helps drawing modeling guidelines for the rail. |
| |
Keywords: | Guided waves Rail inspection Finite elements Wavelet transform |
本文献已被 ScienceDirect 等数据库收录! |