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Prediction of Radiated Structural Noise Using Decomposed Vibro-Acoustic Frequency Response Functions (2024)
Journal Article
Barton, L., Elliott, A., & Smith, J. (in press). Prediction of Radiated Structural Noise Using Decomposed Vibro-Acoustic Frequency Response Functions. #Journal not on list, https://doi.org/10.61782/fa.2023.1125

The manner in which a system radiates noise is dependent upon the resonant behaviour and the forced vibration of the structure. It has been shown previously that the modes of such a system can be identified by performing a singular value decompositio... Read More about Prediction of Radiated Structural Noise Using Decomposed Vibro-Acoustic Frequency Response Functions.

Development of electric scooter alerting sounds using psychoacoustical metrics (2022)
Journal Article
Walton, T., Torija Martinez, A., & Elliott, A. (2022). Development of electric scooter alerting sounds using psychoacoustical metrics. Applied Acoustics, 201(109136), https://doi.org/10.1016/j.apacoust.2022.109136

In recent years electric micromobility transportation, including electric scooters, has seen a surge in popularity due to technological advances and the move to lower emission transport. Although offering a range of societal benefits, such as reduced... Read More about Development of electric scooter alerting sounds using psychoacoustical metrics.

Acoustic optimization of a contra-rotating propeller rig (2022)
Journal Article
Casagrande Hirono, F., Torija Martinez, A., & Elliott, A. (2022). Acoustic optimization of a contra-rotating propeller rig. https://doi.org/10.1121/10.0010735

With the advance of unmanned aerial vehicles as a viable alternative for urban transportation, it is imperative that these vehicles have a low impact on community noise. Contra-rotating propeller technologies offer interesting advantages over traditi... Read More about Acoustic optimization of a contra-rotating propeller rig.

Component replacement TPA : a transmissibility-based structural modification method for in-situ transfer path analysis (2021)
Journal Article

In-situ Transfer Path Analysis is a diagnostic method used to analyse the propagation of noise and vibration through
complex built-up structures. Its defining feature is the invariant characterisation of an assembly’s active components
(i.e. vibrat... Read More about Component replacement TPA : a transmissibility-based structural modification method for in-situ transfer path analysis.

An experimental exploration of the properties of random frequency response functions (2020)
Journal Article
Clot, A., Meggitt, J., Langley, R., Elliott, A., & Moorhouse, A. (2021). An experimental exploration of the properties of random frequency response functions. Journal of Sound and Vibration, 491, 115773. https://doi.org/10.1016/j.jsv.2020.115773

The vibro-acoustic analysis of complex structures over a broadband frequency range is an extremely challenging problem that may often require the use of a hybrid deterministic-statistical approach. Due to manufacturing imperfections, the frequency re... Read More about An experimental exploration of the properties of random frequency response functions.

Development of a hybrid FE-SEA-experimental model (2019)
Journal Article
Clot, A., Meggitt, J., Langley, R., Elliott, A., & Moorhouse, A. (2019). Development of a hybrid FE-SEA-experimental model. Journal of Sound and Vibration, 452(Jul 19), 112-131. https://doi.org/10.1016/j.jsv.2019.03.027

The vibro-acoustic response of complex structures with uncertain properties is a problem of great concern for modern industries. In recent years, much research has been devoted to the prediction of this response in the mid-frequency range where, beca... Read More about Development of a hybrid FE-SEA-experimental model.

A covariance based framework for the propagation of uncertainty through inverse problems with an application to force identification (2019)
Journal Article
Meggitt, J., Moorhouse, A., & Elliott, A. (2019). A covariance based framework for the propagation of uncertainty through inverse problems with an application to force identification. Mechanical Systems and Signal Processing, 124, 275-297. https://doi.org/10.1016/j.ymssp.2018.11.038

Inverse problems are widely encountered in fields as diverse as physics, geophysics, engineering and finance.
In the present paper, a covariance based framework for the estimation of their uncertainty is presented and applied to the problem of inve... Read More about A covariance based framework for the propagation of uncertainty through inverse problems with an application to force identification.

Broadband characterisation of in-duct acoustic sources using an equivalent source approach (2018)
Journal Article
Meggitt, J., Elliott, A., Moorhouse, A., Banwell, G., Hopper, H., & Lamb, J. (2019). Broadband characterisation of in-duct acoustic sources using an equivalent source approach. Journal of Sound and Vibration, 442(Mar 19), 800-816. https://doi.org/10.1016/j.jsv.2018.10.041

This paper is concerned with the development of an experimental method capable of independently characterising low Mach number, in-duct fluid machines, such as pumps, fans, etc. The aim is to propose and test a source characterisation method that is... Read More about Broadband characterisation of in-duct acoustic sources using an equivalent source approach.

Omnidirectional acoustic absorber with a porous core and a metamaterial matching layer (2014)
Journal Article
layer. Journal of Applied Physics, 115(20), 204902. https://doi.org/10.1063/1.4876119

An omnidirectional sound absorber based on the acoustic analogy of the electromagnetic metamaterial
“black hole” has been developed and tested. The resulting structure is composed of a hollow
cylindrical porous absorbing core and a graded index mat... Read More about Omnidirectional acoustic absorber with a porous core and a metamaterial matching layer.

The “round trip” theory for reconstruction of Green's functions at passive locations (2013)
Journal Article
Moorhouse, A., & Elliott, A. (2013). The “round trip” theory for reconstruction of Green's functions at passive locations. ˜The œJournal of the Acoustical Society of America (Online), 134(5), 3605. https://doi.org/10.1121/1.4821210

An expression for the Green's function at an arbitrary set of passive locations (no applied force) is derived and validated by experiment. Three sets of points are involved, the passive reconstruction points, c, which lie on a virtual boundary and tw... Read More about The “round trip” theory for reconstruction of Green's functions at passive locations.

In-situ source path contribution analysis of structure borne road noise (2013)
Journal Article
Elliott, A., Moorhouse, A., Huntley, T., & Tate, S. (2013). In-situ source path contribution analysis of structure borne road noise. Journal of Sound and Vibration, 332(24), 6276-6295. https://doi.org/10.1016/j.jsv.2013.05.031

Source-path-contribution (SPC) analysis, also known as transfer path analysis (TPA), is a technique widely used in the automotive industry for rank ordering noise and vibration sources. The SPC approach is known to provide reliable diagnostic informa... Read More about In-situ source path contribution analysis of structure borne road noise.

Some relationships for coupled structures and their application to measurement of structural dynamic properties in situ (2011)
Journal Article
Moorhouse, A., Evans, T., & Elliott, A. (2011). Some relationships for coupled structures and their application to measurement of structural dynamic properties in situ. Mechanical Systems and Signal Processing, 25(5), 1574 - 1584. https://doi.org/10.1016/j.ymssp.2010.12.016

Three relationships are presented for indirect determination of the structural dynamic properties of substructures, namely the blocked force, mobility and free velocity. First, it is shown that the blocked force of a vibration source can be obtained... Read More about Some relationships for coupled structures and their application to measurement of structural dynamic properties in situ.

Moment excitation and the measurement of moment mobilities
Journal Article
Elliott, A., Moorhouse, A., & Pavić, G. Moment excitation and the measurement of moment mobilities. Journal of Sound and Vibration, 331(11), 2499-2519. https://doi.org/10.1016/j.jsv.2012.01.022

Frequency response functions (FRF), such as mobilities, are widely used in the analysis of vibration and structure-borne sound and it is important that this FRF data can be measured accurately for all important degrees of freedom. In some cases three... Read More about Moment excitation and the measurement of moment mobilities.

Structure-Borne sound characterization of coupled structures—part I: Simple demonstrator model
Journal Article
Pavić, G., & Elliott, A. Structure-Borne sound characterization of coupled structures—part I: Simple demonstrator model. Journal of Vibration and Acoustics, 132(4), 041008. https://doi.org/10.1115/1.4000980

A method has been developed to characterize a vibration source when coupled via resilient mounts to a receiver structure. This two-step measurement procedure can deliver the mobility and free velocity of a source, together with the mobility of the re... Read More about Structure-Borne sound characterization of coupled structures—part I: Simple demonstrator model.