Accuracy of Green's function estimation from correlation of diffuse elastic waves on thin plates

2019 ◽  
Vol 146 (5) ◽  
pp. 3505-3511
Author(s):  
Lynda Chehami ◽  
Emmanuel Moulin ◽  
Julien de Rosny ◽  
Claire Prada
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Elastic Waves ◽  
Thin Plates ◽  
Function Estimation

Green’s Function of Magnetoelastic Waves

2015 ◽  
Vol 233-234 ◽  
pp. 12-15
Author(s):  
Valter A. Ignatchenko ◽  
Dmitry S. Polukhin
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Elastic Waves ◽  
Dipole Interaction ◽  
Green Functions ◽  
Elastic Oscillation ◽  
The Matrix ◽  
Magnetoelastic Medium ◽  
Approximate Expressions ◽  
Magnetoelastic Waves

The matrix (5x5) Green's function of magnetoelastic waves in an isotropic magnetoelastic medium taking into account the dipole-dipole interaction has been derived. The imaginary parts of diagonal and off-diagonal elements of the Green's function in the crossing resonance of spin and longitudinal elastic waves has been investigated. It is shown that under changing the angle of wave propagation θ the amplitudes of Green functions change drastically due redistribution of energy between the magnetic and elastic oscillation. Approximate expressions for the dependence of the widths of the gaps in the spectrum on the angle θ have been also derived.

Localization of acoustic sensors from passive Green's function estimation

2015 ◽  
Vol 138 (5) ◽  
pp. 3010-3018 ◽  
Author(s):  
Thibault Nowakowski ◽  
Laurent Daudet ◽  
Julien de Rosny
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Acoustic Sensors ◽  
Function Estimation
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