Accurate measurement of guided modes in a plate using a bidirectional approach.
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.
UPMC University Paris 06, Unité Mixte de Recherche 7623, LIP, F-75005, Paris, France ludovic.moreau@upmc.fr, jean-gabriel.minonzio@upmc.fr, josquin.foiret@upmc.fr.
Ludovic
L
Moreau
UPMC University Paris 06, Unité Mixte de Recherche 7623, LIP, F-75005, Paris, France ludovic.moreau@upmc.fr, jean-gabriel.minonzio@upmc.fr, josquin.foiret@upmc.fr.
Jean-Gabriel
JG
Minonzio
UPMC University Paris 06, Unité Mixte de Recherche 7623, LIP, F-75005, Paris, France ludovic.moreau@upmc.fr, jean-gabriel.minonzio@upmc.fr, josquin.foiret@upmc.fr.
Josquin
J
Foiret
Institut Langevin ESPCI ParisTech, CNRS Unité Mixte de Recherche 7587, Institut National de la Santé et de la Recherche Médicale ERL U979, 1 rue Jussieu F-75005 Paris France emmanuel.bossy@espci.fr.
Emmanuel
E
Bossy
UPMC University Paris 06, Unité Mixte de Recherche 7623, LIP, F-75005, Paris, France maryline.talmant@upmc.fr, pascal.laugier@upmc.fr.
Maryline
M
Talmant
UPMC University Paris 06, Unité Mixte de Recherche 7623, LIP, F-75005, Paris, France maryline.talmant@upmc.fr, pascal.laugier@upmc.fr.
Pascal
P
Laugier
D001842:Bone and Bones / Q000000981:diagnostic imaging*; D008962:Models, Theoretical; D009038:Motion; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D014465:Ultrasonics / Q000295:instrumentation*; D014463:Ultrasonography