scholarly journals Experimental Study on the Mode Conversion of Lamb Wave Using a Metal Plate Having a Notch Type Defect

2013 ◽  
Vol 19 (1_2) ◽  
pp. 20-23 ◽  
Author(s):  
Kazuhiko IMANO ◽  
Tomoya ENDO
Keyword(s):  
Experimental Study ◽  
Lamb Wave ◽  
Mode Conversion ◽  
Metal Plate ◽  
Type Defect

Investigation of transcranial ultrasound delivery via Lamb wave mode conversion leveraging a transducer pair

2021 ◽  
Vol 150 (4) ◽  
pp. A32-A32
Author(s):  
Matteo Mazzotti ◽  
Eetu Kohtanen ◽  
Alper Erturk ◽  
Massimo Ruzzene
Keyword(s):  
Lamb Wave ◽  
Mode Conversion ◽  
Wave Mode ◽  
Transcranial Ultrasound

317 Damage detection in fiber metal laminates using the mode conversion of the lamb wave

2013 ◽  
Vol 2013.21 (0) ◽  
pp. _317-1_-_317-3_
Author(s):  
Hibiki HIRAKAWA ◽  
Yoji OKABE ◽  
Kazuya SAITO ◽  
Hayato NAKATANI ◽  
Shinji OGIHARA
Keyword(s):  
Damage Detection ◽  
Lamb Wave ◽  
Mode Conversion ◽  
Fiber Metal Laminates ◽  
Fiber Metal

scholarly journals Comparative Experimental Study of Custom Made Plate for Anterior Stabilization and Dorsal Fixation Systems at C1-C2 Vertebrae Level

2016 ◽  
Vol 23 (1) ◽  
pp. 76-81
Author(s):  
A. A Kuleshov ◽  
A. N Shkarubo ◽  
N. S Gavryushenko ◽  
I. S Gromov ◽  
M. S Vetrile ◽  
...  
Keyword(s):  
Experimental Study ◽  
Metal Plate ◽  
Test Laboratory ◽  
Second Step ◽  
Custom Made ◽  
Point Pressure ◽  
The Right ◽  
Dorsal Fixation

Experimental study on the evaluation of strength of fixation with metal constructions at the level of C1-C2 vertebrae was performed on the basis of test laboratory for orthopaedic and traumatologic products. Experiments were performed on the cadaver block preparation (4) and plastic models (8) of craniovertebral spine. Authors’ custom made plate, hook system, screw systems by Magerl and Harms were used as fixators. First step was the imitation of the turning of the head to the right (“twisting”), second step - imitation of head tilting forward (“three point pressure”). It was shown that by its strength and stability of craniovertebral segment the elaborated metal plate was not inferior to dorsal fixation systems.

scholarly journals Lamb Waves Topological Imaging of Multiple Blind Defects in an Isotropic Plate

2019 ◽  
Vol 24 (2) ◽  
pp. 320-326 ◽  
Author(s):  
Wen-Fa Zhu ◽  
Hai-Yan Zhang Zhang ◽  
Meng-Yun Xu ◽  
Guo-Peng Fan
Keyword(s):  
Lamb Wave ◽  
Isotropic Plate ◽  
Lamb Waves ◽  
Mode Conversion ◽  
Image Resolution ◽  
Imaging Method ◽  
Wave Fields ◽  
Face To Face ◽  
Element Simulation ◽  
Reference Medium

The study investigates the feasibility of the Lamb wave topological imaging method for detecting multiple blindholes in an isotropic plate. The topological imaging method is performed based on the computations of two wave fields, a forward and an adjoint, in the defect-free reference medium using different emitting sources. The image is computed by multiplying the forward and adjoint wave fields together and integrating them over time or frequency. The interferences of multimode aliasing and the scattering effect can thus be eliminated at the defectfree positions with an improved image resolution. To investigate the physical mechanism, the refocusing process of the multimode Lamb waves at the defect positions is presented by a face-to-face comparison between the snapshots of the forward and adjoint wave fields using the finite element simulation. The Lamb wave topological imaging method is numerically and experimentally verified to identify multiple blind-holes in an isotropic aluminium plate. The results demonstrate that the topological imaging method enables the suppression of the sartefacts resulting from the mode conversion and achieve high-resolution imaging of the blind defects

SURFACE-TO-SPATIAL MODE CONVERSION BY A CONVEX CYLINDRICAL DIFFRACTION GRATING: AN EXPERIMENTAL STUDY

2016 ◽  
Vol 75 (4) ◽  
pp. 297-311 ◽  
Author(s):  
Alexey A. Vertiy ◽  
Yurii Konstantinovich Sirenko ◽  
A. Pavlyuchenko ◽  
A. Poyedinchuk ◽  
A. Sabyrov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Diffraction Grating ◽  
Mode Conversion ◽  
Spatial Mode
Sign in / Sign up

Export Citation Format

Share Document