Outputs (21)

Measurement of in-room impact noise reduction (2018)
Journal Article

There are well-established measurement standards for the rating of impact noise reduction provided by floor coverings in relation to structurally transmitted impact noise, e.g. BS EN ISO 10140-3 and ASTM E492 are widely used in Europe and North Ameri... Read More about Measurement of in-room impact noise reduction.

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.

In situ determination of dynamic stiffness for resilient elements (2015)
Journal Article

An in situ method for the measurement of a resilient lements dynamic transfer stiffness is outlined and alidated. Unlike current methods, the proposed in situ approach allows for the characterisation of a resilient element whilst incorporated into an... Read More about In situ determination of dynamic stiffness for resilient elements.

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.

Structure-borne sound and vibration from building-mounted wind turbines (2011)
Journal Article

Noise continues to be a significant factor in the development of wind energy resources. In the case of building-mounted wind turbines (BMWTs), in addition to the usual airborne sound there is the potential for occupants to be affected by structure-bo... Read More about Structure-borne sound and vibration from building-mounted wind turbines.

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.