Outputs (42)

Operational measurement of frequency response functions (2024)
Journal Article
McGee, R., Elliott, A., Meggitt, J., & Smith, J. (in press). Operational measurement of frequency response functions. #Journal not on list, https://doi.org/10.61782/fa.2023.1265

A common problem that arises during modal testing is the inability to directly excite degrees-of-freedom to obtain frequency response functions (FRFs). It has been shown previously that reliable reproduction of FRFs via indirect excitation is difficu... Read More about Operational measurement of frequency response functions.

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.

Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact (2022)
Presentation / Conference
Casagrande Hirono, F., Torija Martinez, A., Elliott, A., Taylor, J., Grimshaw, S., & Lefas, D. (2022, June). Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact. Presented at 28th AIAA/CEAS Aeroacoustics 2022 Conference, Southampton, UK

This paper discusses the aeroacoustic aspects of the design, construction and testing of an all-electric ducted fan propulsion module for future electric aircraft. An overview of the propulsor aerodynamic design is provided. Acoustic measurements mad... Read More about Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact.

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.

Generation and analysis of artificial warning sounds for electric scooters (2021)
Report
Torija Martinez, A., Elliott, A., Harris, L., Podwinska, Z., Welham, C., Nicholls, R., …Williams, D. Generation and analysis of artificial warning sounds for electric scooters

• emTransit B.V (Dott) is a European mobility operator currently operating over 30,000 electric scooters in Belgium, France, Germany, Italy, Poland and now the UK. The company aims to expand its UK operations and has recently won a tender for the Tra... Read More about Generation and analysis of artificial warning sounds for electric scooters.

Fast transfer path analysis using controlled electric motors as in-situ blocked force vibration sources (2021)
Thesis
Wienen, K. (2021). Fast transfer path analysis using controlled electric motors as in-situ blocked force vibration sources. (Thesis). University of Salford

Under certain driving and road conditions, steering manoeuvres may provoke audible noise inside the vehicle compartment induced by the electric power steering (EPS) system. Regarding noise, vibration and harshness (NVH), engineers require practical t... Read More about Fast transfer path analysis using controlled electric motors as in-situ blocked force vibration sources.

Vibro-acoustic analysis of a domestic product based on experimental measurement and hybrid modelling (2021)
Journal Article
Meggitt, J., Banwell, G., Elliott, A., Moorhouse, A., & Langley, R. (2021). Vibro-acoustic analysis of a domestic product based on experimental measurement and hybrid modelling. Applied Acoustics, 182, 108144. https://doi.org/10.1016/j.apacoust.2021.108144

The purpose of this paper is to present a case study whereby a hybrid experimental-numerical model is used to analyse the structureborne radiation from a domestic product (vacuum cleaner head). The passive (including radiative) properties of the str... Read More about Vibro-acoustic analysis of a domestic product based on experimental measurement and hybrid modelling.

Component replacement TPA : a transmissibility-based structural modification method for in-situ transfer path analysis (2021)
Journal Article
Meggitt, J., Elliott, A., Moorhouse, A., Jalibert, A., & Franks, G. (2021). Component replacement TPA : a transmissibility-based structural modification method for in-situ transfer path analysis. Journal of Sound and Vibration, 499, 115991. https://doi.org/10.1016/j.jsv.2021.115991

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.