Outputs (44)

Detailed directivity measurements of aerodynamic sound sources (2015)
Presentation / Conference
Elliott, A., Meggitt, J., & Moorhouse, A. (2015, April). Detailed directivity measurements of aerodynamic sound sources. Presented at Noise and Vibration - Emerging Technologies, Dubrovnik, Croatia

The sound radiated by a vibrating surface can be modelled using combinations of elementary sources but for aerodynamic noise sources it less clear how to do so. It is proposed here that the arrangement and number of ideal sources required to represen... Read More about Detailed directivity measurements of aerodynamic sound sources.

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.

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.

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.

An air spring (2012)
Patent

There is provided an air spring (1) for supporting a load, the air spring (1) comprises a chamber (50) for holding a pressurised gas in use, a load-bearing surface (10) arranged to transmit a force from a load in use to the pressurised gas held in th... Read More about An air spring.

Human response to vibration in residential environments, technical report 1 : measurement of vibration exposure (2012)
Report

The Technical Report 1 describes the research undertaken to develop a method by which human exposure to vibration in residential environments can be assessed. That work has been carried out by the University of Salford supported by the Department of... Read More about Human response to vibration in residential environments, technical report 1 : measurement of vibration exposure.

Noise and vibration from building-mounted micro wind turbines Part 2: Results of measurements and analysis (2011)
Report
Part 2: Results of measurements and analysis

Description

To research the quantification of vibration from a micro turbine, and to develop a method of prediction of vibration and structure borne noise in a wide variety of installations in the UK.

Objective

The objectives of the study... Read More about Noise and vibration from building-mounted micro wind turbines Part 2: Results of measurements and analysis.

Noise and vibration from building-mounted micro wind turbines Part 2: Results of measurements and analysis (2011)
Report
Part 2: Results of measurements and analysis

Description

To research the quantification of vibration from a micro turbine, and to develop a method of prediction of vibration and structure borne noise in a wide variety of installations in the UK.

Objective

The objectives of the study... Read More about Noise and vibration from building-mounted micro wind turbines Part 2: Results of measurements and analysis.

Noise and vibration from building-mounted micro wind turbines part 3 : prediction methodology (2011)
Report
part 3 : prediction methodology

This brief report describes a simplified method for estimation of
levels of structure-borne sound in buildings to which a micro-wind
turbine (MWT) is attached. The method is applicable to two specific
designs of MWT, each for three lengths of moun... Read More about Noise and vibration from building-mounted micro wind turbines part 3 : prediction methodology.

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.