Emeritus Professor Frank Leppington 


Senior Research Fellow 

Email: f.leppington@imperial.ac.uk 
Mathematics Department Imperial College Faculties
(with DF Popple) The twodimensional sound field due to a pair of interacting compliant pistons. 1995. Proc R Soc Lond A450, 513536.
(with MR Green) The sound field generated by a pair of circular cylinders moving in unsteady rectilinear motion. 1995. Quart J Mech Appl Maths 48, 483505.
The interaction between sound and circulatory fluid motion as a problem in matched expansions. 1995. IMA J Appl Math 55, 163186.
Radiation of acoustic power from a twodimensional double elastic plate.1995. Mathematika 42, 368391.
(with DF Popple) The sound field due to a periodic array of forced wavebearing strips. 1995. IMA J Appl Math 55, 303315.
Acoustic radiation from plates into a wedgeshaped fluid region: application to the free plate problem. 1996. Proc R Soc Lond A452, 17451764.
(with SS Kulkarni & EG Broadbent) Vibrations in three interconnected regions: membranes or acoustic cells. 1996. Proc R Soc Lond A452, 18271844.
(with RA Sisson) On the interaction of a hollow vortex with an aerofoil, with application to sound generation. 1997. J Fluid Mech 345, 203226.
(with MR Green) The inner and outer fields due to a pair of spheres moving unsteadily through a compressible fluid: rectilinear motion. 1997. IMA J Appl Math. 59, 4369.
(with WM Pang) The scattering properties of a membrane constrained on a small circular region. 1999. Proc R Soc Lond A455, 20672089.
(with I Papanikolaou) Acoustic scattering by a parallel pair of semiinfinite wavebearing surfaces. 1999. Proc R Soc Lond. A455, 37433765.
(with WM Pang) Scattering of sound by an infinite membrane fixed on two circular regions. 2000. IMA J Appl Math. 64, 5172
(with I Papanikolaou) Asymptotic analysis for the diffraction of sound by closely spaced and lightly loaded semiinfinite flexible surfaces. 2000. Quart J Mech Appl Maths. 53, 263283.
(with SS Kulkarni & EG Broadbent) Vibrations in several interconnected regions: a comparison of SEA, ray theory and numerical results. 2001. Wave Motion 33, 7996.
(with KH Heron & EG Broadbent) Resonant and nonresonant transmission of random noise through complex plates. 2002. Proc R Soc Lond A 458, 683704.
(with EG Broadbent) Acoustic radiation properties of an elastic plate with an infinite baffle and cavity. 2002. To appear in Quart J Mech Appl Math.