Accurate measurement of guided modes in a plate using a bidirectional approach

作者:Moreau Ludovic*; Minonzio Jean Gabriel; Foiret Josquin; Bossy Emmanuel; Talmant Maryline; Laugier Pascal
来源:Journal of the Acoustical Society of America, 2014, 135(1): EL15-EL21.
DOI:10.1121/1.4832335

摘要

Measuring guided wave propagation in long bones is of interest to the medical community. When an inclination exists between the probe and the tested specimen surface, a bias is introduced on the guided mode wavenumbers. The aim of this study was to generalize the bidirectional axial transmission technique initially developed for the first arriving signal. Validation tests were performed on academic materials such a bone-mimicking plate covered with either a silicon or fat-mimicking layer. For any inclination, the wavenumbers measured with the probe parallel to the waveguide surface can be obtained by averaging the wavenumbers measured in two opposite directions.

  • 出版日期2014-1