51 citations · 116 across the 5 of their papers we have counts for
4 papers · 1 filter
Silence is bliss in a Platonic relationship
Cheuk-Him Yeung, Tom Shearer, William J Parnell
We describe an effective active cloaking strategy for the scalar Helmholtz equation in three dimensions where multipole active sources are located at the vertices of the Platonic s…
Static elastic cloaking, low frequency elastic wave transparency and neutral inclusions
Andrew N. Norris, William J. Parnell
New connections between static elastic cloaking, low frequency elastic wave scattering and neutral inclusions are established in the context of two dimensional elasticity. A cylind…
A Proof that Multiple Waves Propagate in Ensemble-Averaged Particulate Materials
Artur Lewis Gower, Ian David Abrahams, William J. Parnell
Effective medium theory aims to describe a complex inhomogeneous material in terms of a few important macroscopic parameters. To characterise wave propagation through an inhomogene…
Multiple Waves Propagate in Random Particulate Materials
Artur Lewis Gower, William J. Parnell, Ian David Abrahams
For over 70 years it has been assumed that scalar wave propagation in (ensemble-averaged) random particulate materials can be characterised by a single effective wavenumber. Here,…