Ultrasonic Lamb wave mode conversion to optical fiber guided mode with varying input conditions

2019 ◽  
Author(s):  
Junghyun Wee ◽  
Drew Hackney ◽  
Kara Peters
Keyword(s):  
Optical Fiber ◽  
Lamb Wave ◽  
Mode Conversion ◽  
Wave Mode ◽  
Guided Mode

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

Reflection and Mode Conversion of Fundamental Torsional Guided Wave Mode From Lack of Bonding in Induction Pressure Welding

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
Deepesh Vimalan ◽  
Krishnan Balasubramaniam ◽  
Prabhu Rajagopal
Keyword(s):  
Mode Conversion ◽  
Three Dimensional ◽  
Wave Mode ◽  
Bond Line ◽  
Fe Analysis ◽  
Guided Wave ◽  
Pressure Welding ◽  
Cross Sectional ◽  
3D Finite Element ◽  
Guided Mode

Interaction of fundamental torsional ultrasonic pipe guided mode T(0, 1) from defects caused by induction pressure welding (IPW) process is studied using three-dimensional (3D) finite element (FE) analysis validated by experiments. Defects are assumed as cross-sectional notches along the weld bond-line, and both surface-breaking and embedded features are considered. Results show that T(0, 1) mode reflection from weld defects is strongly influenced by features of the weld itself. However, with supplementary results such as the mode-converted flexural F(1, 3) and F(1, 2) modes and circumferential variation of T(0, 1) reflection, there is potential for an effective screening solution.

Determining impact induced damage by lamb wave mode extracted by EMD method

Measurement ◽  
2015 ◽  
Vol 65 ◽  
pp. 120-128 ◽  
Author(s):  
Xu Baochun ◽  
Yuan Shenfang ◽  
Wang Mulan ◽  
Qiu Lei
Keyword(s):  
Lamb Wave ◽  
Wave Mode ◽  
Emd Method

scholarly journals Wave Propagation Analysis in Composite Laminates Containing a Delamination Using a Three-Dimensional Spectral Element Method

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Fucai Li ◽  
Haikuo Peng ◽  
Xuewei Sun ◽  
Jinfu Wang ◽  
Guang Meng
Keyword(s):  
Wave Propagation ◽  
Lamb Wave ◽  
Composite Laminates ◽  
Composite Structures ◽  
Spectral Element Method ◽  
Three Dimensional ◽  
Spectral Element ◽  
Wave Mode ◽  
Diagonal Form ◽  
Element Method

A three-dimensional spectral element method (SEM) was developed for analysis of Lamb wave propagation in composite laminates containing a delamination. SEM is more efficient in simulating wave propagation in structures than conventional finite element method (FEM) because of its unique diagonal form of the mass matrix. Three types of composite laminates, namely, unidirectional-ply laminates, cross-ply laminates, and angle-ply laminates are modeled using three-dimensional spectral finite elements. Wave propagation characteristics in intact composite laminates are investigated, and the effectiveness of the method is validated by comparison of the simulation results with analytical solutions based on transfer matrix method. Different Lamb wave mode interactions with delamination are evaluated, and it is demonstrated that symmetric Lamb wave mode may be insensitive to delamination at certain interfaces of laminates while the antisymmetric mode is more suited for identification of delamination in composite structures.

Notice of Removal: Zero TCF resonator based on S0 Lamb wave mode in AlN thin plate films

2017 ◽  
Author(s):  
Mohammed Moutaouekkil ◽  
Abdelkrim Talbi ◽  
Omar Elmazria ◽  
El Houssaine El Boudouti ◽  
Philippe Pernod ◽  
...  
Keyword(s):  
Thin Plate ◽  
Lamb Wave ◽  
Wave Mode

Fast wave mode conversion in three-ion component plasmas

2008 ◽  
Author(s):  
Yevgen Kazakov ◽  
Ivan Pavlenko ◽  
Igor Girka ◽  
Boris Weyssow
Keyword(s):  
Mode Conversion ◽  
Wave Mode ◽  
Fast Wave

Incremental scattering of the A0 Lamb wave mode from a notch emanating from a through-hole

Ultrasonics ◽  
2019 ◽  
Vol 91 ◽  
pp. 220-230 ◽  
Author(s):  
Hongye Liu ◽  
Xin Chen ◽  
Jennifer E. Michaels ◽  
Thomas E. Michaels ◽  
Cunfu He
Keyword(s):  
Lamb Wave ◽  
Wave Mode ◽  
Through Hole
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