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Practical Sound Attenuation using Broad Band Sound Attenuating Devices

使用宽带声音衰减装置进行实用声音衰减

基本信息

批准号：
EP/I029001/1
负责人：
Feo Kusmartsev
金额：
$ 21.37万
依托单位：
Loughborough University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2011
资助国家：
英国
起止时间：
2011 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FI029001%2F1
关键词：
Practical Sound Attenuation using Broad

项目摘要

Reduction of annoyance from sound pollution is currently a subject of public concern and legislative action. We have a novel design of Broad Band Sound Attenuating Device, which can be configured to operate in a wide variety of situations. Our small-scale laboratory prototype performs better than conventional barriers, and its performance agrees with our Finite Element model predictions. A very important and beneficial property of our technology is its scalability. It can be tailored to attenuate sounds over the whole acoustic (and indeed ultrasonic) range. This means that it can readily be adapted to suit a wide range of applications. We have identified 2 key markets where legislation requires improved protection from sound pollution in the near future, namely:i) environmental noise from rail/roads and ii) protection from noisy machineryOur first aim is to extend our current models to full-scale simulations involving larger attenuators and realistic simulations of noise pollution. Having optimized the protection systems required for our two identified key markets we intend to build and test a full-scale demountable prototype for demonstration to potential industrial partners. This will be a system designed for protection from machinery noise since size and portability will be required. If time allows it is intended to construct a short section, modular construction barrier for use in road sound attenuation.In laboratory conditions our system offers good attenuation levels beating a mass law comparison. Initial research shows that the sound attenuation mechanism is virtually material independent, and poses a further advantage of blocking out low frequency sound without the need of increasing the mass of the barrier as with current technology (in current systems blocking low frequencies requires massive barriers). A successful outcome will lead to sound attenuation systems with wide applications throughout industry which offer major advantages over conventional systems.

减少声音污染带来的烦恼目前是公众关注和立法行动的主题。我们拥有新颖的宽带声音衰减装置设计，可配置为在各种情况下运行。我们的小型实验室原型的性能优于传统屏障，其性能与我们的有限元模型预测一致。我们技术的一个非常重要且有益的特性是它的可扩展性。它可以定制以衰减整个声学（实际上是超声波）范围内的声音。这意味着它可以很容易地进行调整以适应广泛的应用。我们已经确定了两个关键市场，立法要求在不久的将来加强对声音污染的保护，即：i）铁路/公路的环境噪声和 ii）噪音机械的保护我们的首要目标是将我们当前的模型扩展到涉及更大衰减器的全面模拟和噪声污染的真实模拟。在优化了我们两个确定的关键市场所需的保护系统后，我们打算构建并测试一个全尺寸的可拆卸原型，以便向潜在的工业合作伙伴进行演示。由于需要尺寸和便携性，这将是一个设计用于防止机械噪音的系统。如果时间允许，打算建造一个短节、模块化结构屏障，用于道路声音衰减。在实验室条件下，我们的系统提供了优于质量定律比较的良好衰减水平。初步研究表明，声音衰减机制实际上与材料无关，并且具有阻挡低频声音的进一步优势，而无需像当前技术那样增加屏障的质量（在当前系统中阻挡低频需要大量屏障）。成功的结果将导致声音衰减系统在整个行业得到广泛应用，与传统系统相比具有重大优势。