Finite-element modelling of elastic wave propagation and scattering within heterogeneous media
The scattering treated here arises when elastic waves propagate within a heterogeneous
medium defined by random spatial fluctuation of its elastic properties. Whereas classical …
medium defined by random spatial fluctuation of its elastic properties. Whereas classical …
Finite element modelling of elastic wave scattering within a polycrystalline material in two and three dimensions
Finite element modelling is a promising tool for further progressing the development of
ultrasonic non-destructive evaluation of polycrystalline materials. Yet its widespread …
ultrasonic non-destructive evaluation of polycrystalline materials. Yet its widespread …
[HTML][HTML] Influence of grain morphology on ultrasonic wave attenuation in polycrystalline media with statistically equiaxed grains
The influence of a polycrystals' grain structure on elastic wave scattering is studied with
analytical and numerical methods in a broad frequency range. A semi-analytical attenuation …
analytical and numerical methods in a broad frequency range. A semi-analytical attenuation …
[HTML][HTML] Numerical and analytic modelling of elastodynamic scattering within polycrystalline materials
The elastodynamic behavior of polycrystalline cubic materials is studied through the
fundamental propagation properties, the attenuation and wave speed, of a longitudinal …
fundamental propagation properties, the attenuation and wave speed, of a longitudinal …
[HTML][HTML] Maximizing the accuracy of finite element simulation of elastic wave propagation in polycrystals
Three-dimensional finite element (FE) modelling, with representation of materials at grain
scale in realistic sample volumes, is capable of accurately describing elastic wave …
scale in realistic sample volumes, is capable of accurately describing elastic wave …
Ultrasonic backscattering in polycrystals with elongated single phase and duplex microstructures
OI Lobkis, L Yang, J Li, SI Rokhlin - Ultrasonics, 2012 - Elsevier
An analytical solution for a three dimensional integral representation of the backscattering
(BS) coefficient in polycrystals with elongated (generally ellipsoidal) grains is obtained; it is a …
(BS) coefficient in polycrystals with elongated (generally ellipsoidal) grains is obtained; it is a …
Strain induced surface change in sheet metal forming: Numerical prediction, influence on friction and tool wear
Y Wu, V Recklin, P Groche - Journal of Manufacturing and Materials …, 2021 - mdpi.com
In sheet metal forming, free deformation of the sheet takes place frequently without contact
with forming tools. The pre-straining resulting from the free deformation leads to a surface …
with forming tools. The pre-straining resulting from the free deformation leads to a surface …
Grain size characterization by laser-based ultrasonics based on the centroid frequency shift method
X Bai, Y Zhao, J Ma, R Guo, H Zhang - Materials Characterization, 2019 - Elsevier
To solve such problems as the sensitivity of ultrasonic attenuation method for grain size
evaluation to geometric spreading, reflection and transmission effects, and the accuracy of …
evaluation to geometric spreading, reflection and transmission effects, and the accuracy of …
Modeling and simulation of laser shock waves in elasto-plastic polycrystalline microstructures
We study the propagation of elasto-plastic shockwaves induced by high power laser impacts
in 2D polycrystalline metallic alloys in order to investigate the influence of the material …
in 2D polycrystalline metallic alloys in order to investigate the influence of the material …
Comparison of ultrasonic attenuation within two-and three-dimensional polycrystalline media
An analytical approach to develop explicit formulas of attenuation coefficient in both 2D and
3D cases is proposed. It results in a better understanding of the grain scattering mechanisms …
3D cases is proposed. It results in a better understanding of the grain scattering mechanisms …