scholarly journals Ultrasonic wave propagation predictions for polycrystalline materials using three-dimensional synthetic microstructures: Phase velocity variations

2019 ◽  
Vol 145 (4) ◽  
pp. 2171-2180 ◽  
Author(s):  
Musa Norouzian ◽  
Joseph A. Turner
Keyword(s):  
Wave Propagation ◽  
Phase Velocity ◽  
Ultrasonic Wave ◽  
Three Dimensional ◽  
Polycrystalline Materials ◽  
Ultrasonic Wave Propagation ◽  
Velocity Variations ◽  
Synthetic Microstructures

Numerical Modelling Methods for Ultrasonic Wave Propagation Through Polycrystalline Materials

2019 ◽  
Vol 72 (11) ◽  
pp. 2923-2932 ◽  
Author(s):  
S. Shivaprasad ◽  
C. V. Krishnamurthy ◽  
Abhishek Pandala ◽  
Anuraag Saini ◽  
Adithya Ramachandran ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Numerical Modelling ◽  
Ultrasonic Wave ◽  
Polycrystalline Materials ◽  
Ultrasonic Wave Propagation ◽  
Modelling Methods

THREE-DIMENSIONAL TIME DOMAIN MODELING OF ULTRASONIC WAVE PROPAGATION IN CONCRETE IN EXPLICIT CONSIDERATION OF AGGREGATES AND POROSITY

2001 ◽  
Vol 09 (04) ◽  
pp. 1543-1560 ◽  
Author(s):  
FRANK SCHUBERT ◽  
BERND KOEHLER
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
Time Domain ◽  
Energy Transport ◽  
Mode Conversion ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Complex Mixture ◽  
Domain Modeling ◽  
Ultrasonic Wave Propagation

Concrete as strongly heterogeneous and highly-packed composite material represents a very important but also very difficult object for ultrasonic nondestructive testing (NDT). Due to the high scatterer density, ultrasonic wave propagation in this material consists of a complex mixture of multiple scattering, mode conversion and diffusive energy transport. In order to obtain a better understanding of the effect of aggregates and porosity on elastic wave propagation in concrete and to optimize imaging techniques, e.g. synthetic aperture focusing technique (SAFT),1 it is useful to model the wave propagation and scattering process explicitly in the time domain. In this paper, the three-dimensional EFIT-Code (EFIT: Elastodynamic Finite Integration Technique)2 with periodic boundary conditions is used to model attenuation and dispersion of a plane longitudinal wave propagating in a synthetic three-dimensional concrete plate. Systematic parameter studies are carried out in order to demonstrate the effect of porosity and that of different aggregates. Finally, the simulation results are compared with former plane strain simulations, revealing significant differences in attenuation and signal-to-noise ratio between the two-dimensional and the more realistic three-dimensional case.

Simulation study of axial ultrasonic wave propagation in heterogeneous bovine cortical bone

2016 ◽  
Vol 140 (5) ◽  
pp. 3710-3717 ◽  
Author(s):  
Toshiho Hata ◽  
Yoshiki Nagatani ◽  
Koki Takano ◽  
Mami Matsukawa
Keyword(s):  
Wave Propagation ◽  
Cortical Bone ◽  
Ultrasonic Wave ◽  
Simulation Study ◽  
Ultrasonic Wave Propagation
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