Decomposed vibro-acoustic frequency response functions for the prediction of radiated sound

There are several methods employed to conduct analysis of vibrations in structures. Thesemethods can be applied to various problems caused by vibrations, such as external noise, andalso to monitor the behavior of the source or structure which is either producing ortransmitting these vibrations. This project aims to work towards the development of a methodwhich can conduct real-time prediction of radiated vehicle noise whilst also performingstructural health monitoring in the presence of unmeasured background noise sources.In order to predict receiver response from a vibro-acoustic sound source, several techniquescan be employed to mathematically predict the acoustic emissions from a vibrating structure.In this case, the source- receiver assembly will be analysed using in-situ transfer path analysisto determine the frequency response functions and blocked forces of the structure to predictexterior noise. A novel volume velocity source will be used in conjunction with establishedblocked forces method of radiated noise prediction for calculating the noise produced by aplate in an anechoic chamber when excited by multiple vibration sources.Further to this, a Singular Value Decomposition (SVD) approach is used to determine adescription of predicted modes, with a view to implement the foundations of a method forcondition monitoring and exterior noise emission prediction of complex structures due tovibro-acoustic excitation. A method including elements of the blocked force calculation, incombination with a modal analysis technique based on Singular Value Decomposition andthe Blocked Force technique is investigated. This is conducted using an experiment based onthe radiation of a plate with multiple vibration sources, with the aim to use decomposedtransfer functions to predict the contribution to the radiated noise from a particular mode orgroup of modes