An experimental investigation into active structural acoustic cloaking of a flexible cylinder
The ability to acoustically cloak an object, effectively making the object acoustically invisible
to an outside observer, is of interest in many applications where the presence of an object …
to an outside observer, is of interest in many applications where the presence of an object …
Antiplane elastic wave cloaking using metamaterials, homogenization and hyperelasticity
WJ Parnell, T Shearer - Wave Motion, 2013 - Elsevier
We consider the problem of how to cloak objects from antiplane elastic waves using two
alternative techniques. The first is the use of a layered metamaterial in the spirit of the work …
alternative techniques. The first is the use of a layered metamaterial in the spirit of the work …
[HTML][HTML] Bounds on Herglotz functions and fundamental limits of broadband passive quasistatic cloaking
Using a sum rule, we derive new bounds on Herglotz functions that generalize those given
in Bernland et al.[J. Phys. A: Math. Theor. 44 (14), 145205 (2011)] and Gustafsson and …
in Bernland et al.[J. Phys. A: Math. Theor. 44 (14), 145205 (2011)] and Gustafsson and …
Active cloaking of inclusions for flexural waves in thin elastic plates
J O'Neill, Ö Selsil, RC McPhedran… - … Quarterly Journal of …, 2015 - academic.oup.com
We present a new method to create an active cloak for a single clamped inclusion in a
Kirchhoff plate in the presence of flexural waves. In order to cloak this inclusion, we place …
Kirchhoff plate in the presence of flexural waves. In order to cloak this inclusion, we place …
Active elastodynamic cloaking
AN Norris, FA Amirkulova… - … and Mechanics of …, 2014 - journals.sagepub.com
An active elastodynamic cloak destructively interferes with an incident time harmonic in-
plane (coupled compressional/shear) elastic wave to produce zero total elastic field over a …
plane (coupled compressional/shear) elastic wave to produce zero total elastic field over a …
Active noise cloaking of 2D cylindrical shells
Active noise cloaking of rigid and elastic 2D cylindrical shells in an infinite acoustic medium
is presented. The control approach utilises control sources or forces and discrete error …
is presented. The control approach utilises control sources or forces and discrete error …
The gradient of total multiple scattering cross-section and its application to acoustic cloaking
FA Amirkulova, AN Norris - Journal of Theoretical and …, 2020 - World Scientific
We derive a formula for the gradients of the total scattering cross-section (TSCS) with
respect to positions of a set of cylindrical scatterers. The analytic form enhances modeling …
respect to positions of a set of cylindrical scatterers. The analytic form enhances modeling …
[HTML][HTML] Active cloaking of flexural waves in thin plates
G Futhazar, WJ Parnell, AN Norris - Journal of Sound and Vibration, 2015 - Elsevier
An active cloak consists of a set of discrete multipole sources distributed in space. When the
source positions and amplitudes are carefully specified the active field destructively …
source positions and amplitudes are carefully specified the active field destructively …
[HTML][HTML] Active acoustic cloaking of cylindrical shells in low Mach number flow
The vibro-acoustic response of a two-dimensional cylindrical shell in low Mach number flow
is herein derived. The analytical model takes into account the structural elasticity and …
is herein derived. The analytical model takes into account the structural elasticity and …
Manipulation of acoustic wave scattering from cylindrical shells using a coating of FG magneto-electro-elastic composite materials: Active acoustic cloaking
A Tarkashvand, K Daneshjou - Wave Motion, 2023 - Elsevier
Acoustically cloaking an object from view of a system that uses acoustic waves for detection
is an attractive and practical capability. The aim of the current investigation is to hide a steel …
is an attractive and practical capability. The aim of the current investigation is to hide a steel …