The prediction of industrial noise and its transmission through metal cladding systems

Environmental noise is an issue of increasing concern which has resulted in muchlegislation over recent years. A large proportion of noise complaints arise fromindustrial and commercial premises. This thesis therefore aims to take a significant steptowards the provision of an accurate engineering tool which can assess the potentialannoyance of proposed industrial premises.One requires a detailed knowledge of sound fields within buildings, its transmissionthrough building elements, directional radiation and propagation outdoors. All of theseareas are the subject of much research internationally. The thesis is therefore split intotwo parts.Part I reviews the general area of industrial noise prediction. Existing methods arevalidated and improvements are suggested in many cases. The opinion is formed thatthe area most in need of detailed research is that of sound transmission through metalcladding systems.Part II tackles this subject in greater depth. The sound reduction of single-leaf claddingsystems is measured in order to establish basic properties. This reveals pronouncedtransmission characteristics which can be explained by detailed analysis of structuralvibrations. Complex vibro-acoustic models are forwarded to predict the properties ofsuch materials. Much effort is spent simplifying these predictions, thus yieldingaccurate engineering methods. Finally the results are applied to commercial double-leafcladding. This provides solutions for cost-effective product development. It is thereforehoped that a contribution has been made to effectively reducing industrial noise as wellas predicting its level.

Level dc:type.qualificationlevel

Doctoral (Level 8)

Year dc:date.issued

1995

Author dc:creator

• Windle, RM

Language dc:language

en

Identifier

oai:salford-repository.worktribe.com:1338497

OAI identifier oai:identifier

oai:salford-repository.worktribe.com:1338497