Professor Henry Rice

  ARRAY   CAT EARDRUM   CROSS-FLOW   DISTANCE AND TIME BASED PRICING   DYNAMICAL MODEL   EARDRUM   ELEMENTS   EXTERNAL COSTS   FLUIDELASTIC INSTABILITY   FORMULATION   GLASS WOOL MATERIALS   HELMHOLTZ-EQUATION   HIGHER FREQUENCY ANALYSIS   IDENTIFICATION   INTERNALISATION   LIGHT FIBROUS MATERIALS   LOCATION   MEDIA   MIDDLE EAR   MIDDLE-EAR   MODEL   MULTIPLE PROBE MEASUREMENTS   NATURAL FREQUENCIES   NON-LINEAR SYSTEMS   NONPARAMETRIC IDENTIFICATION   OSSICULAR DISPLACEMENT   PANEL   RECONSTRUCTION   ROAD PRICING   SIGNAL   SOUND-TRANSMISSION   SPECTRAL-ANALYSIS   STABILITY   STATE MAPPING APPROACH   SYSTEMS   TUBE   TUBE BUNDLES

1. Identification of non-linear systems post PhD : Following on from post PhD pubs 1985-88 on design of non-linear vibration absorbers I worked on the extension of the identification of general linear input/output systems using spectral methods was proposed in a pragmatic way for the first time. The initial paper was published in 1988 in the flegling journal (Mechanical Systems and Signal Processing) with subsequent follow ups. A most spectacular work included the experimental application of the method to developing a model for squeeze film damping from a fretting wear problem associated with heat exchanger tubes at Centre dEtudes Atomique (CEA) Saclay (Esmonde et al 1990) and an experimental application to locate a discrete non-linearity (Xu and Rice 1996). Work on the non-linear dynamics of light fibrous materials (eg Rice Torrance Eikelman 1998 and with Goransson 1999) is now being revisted in the context of metamaterials. 2. Vibration to Acoustics : As the bulk of my funding was now linked to aeronautic applications, I became more interested in designing solutions for real/large systems which included acoustics.. Experimental testing of larger systems had been well established at this time but the computational challenges associated with large scale acoustic systems now became key in design. I also examined during this period the classical Finite Element Method and published on Middle Ear dynamics with e.g. (Blaney from 1996, and Ferris 1998 - prosthesis designs) In these paper series we developed for the first time coupled vibroacoustic models for the outer and middle ear entities. Studies on wave based full field methods and boundary methods with e.g. Lopez et al from 2003 and efficient freucny domains solutions continue (ISMA 2016). 3. Environmental Noise : In 2003 the European Noise Directive END was launched which delivered funding by branching into noise impact and publications from 2006 onwards principally with Murphy and King with a new recent EPA project on further implementation. An aspect of this was also expressed with support from SFI Metropolis to develop in conjunction with C O'Sullivan and F.Newells and F.Bolands groups ground breaking auralised city (college) animations with traffic and people (pubs from 2009). 4.Jet Noise : These complex fluid flow processes require semi-analytic approaches driven by underlying rans methods with some success delivered publications from (2007) on design approaches. This extended more recently to the area of wind turbine (particularly intermittent) noise (see Botha 2017 and EU-SWIP grant). 5.Metamaterial Acoustics : This is a transformational emerging opportunity which I have engaged in where absorbent materials may now be manufactured with precise internal geometries at scales suitable for "designer" acoustic interaction in the audible range. Our positioning of manufacturing, experimental and modelling analysis was duly recognised by a H2020 grant (Aerialist - J.Kennedy PI with a follow on proposal (much expanded in partnerships) and positioning ourselves on the manufacturing/vibro-acoustic design with the EU COST action -DENORMS. This work has already resulted in three top journal papers (one invited) with a further paper in prep on a sub wavelength acoustic liner design. The research is on track to further diversify into vibroacoustics, multifunctional design, active and semi active metastructures and AI optimisations in metastructure design. This research development is particularly satisfying as it draws on all of the 4 previous expertise areas with the critical enabling addition of expertise from AMBER and our additive manufacturing group. We thus have a core multi-disciplinary world leading group (with J.Kennedy and D.Trimble) established now in TCD