SBIR Phase I: Realizing Broadband Frequency Sound Absorption in Micro-Slit Panels

SBIR 第一阶段：在微缝面板中实现宽带频率吸声

• 批准号: 1113541
• 负责人: Peter Jackson
• 金额: $ 15万
• 依托单位: Ward Process dba American Acoustical Products
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1113541&HistoricalAwards=false
• 关键词: SBIR; Phase; Realizing; Broadband; Frequency

This Small Business Innovation Research Phase I project is aimed at developing micro-slit panel (MSP) sound absorbers that are effective over broad frequency ranges. MSP absorbers are reclaimable, non-combustible, and environmentally friendly. Traditional absorbers like foams and fibers deteriorate over time and trap oil and other contaminants. On the other hand, MSP absorbers are made from aluminum and plastic, with sound being attenuated due to viscous friction in the sub-millimeter size pores. The panels are separated from a hard surface and are most effective when the acoustic particle velocity is high in the slits. Previous work has demonstrated the viability of the materials in particular frequency bands. However, MSP absorbers will need to be effective over a broader frequency range in order for them to be used in a wider range of applications. The goal of the proposed work is to conduct measurement and numerical simulation studies aimed at improving the MSP performance by varying the slit size and porosity across a panel, and by designing a substrate that can be placed behind the panel. It is anticipated that the developed MSP absorbers will replace foams and fibers in many commercial applications.The broader impact/commercial potential of this project will be the development micro-slit panel (MSP) absorbers that are superior to traditional fiberglass and foam absorbers. Conservative estimates for the potential volume of the product, if it were to be accepted by the architectural community, would be 20 million square feet per year. Areas of application would include ceiling deck panels in airports, train stations, bus terminals, and acoustical ducting in commercial buildings. These products would be especially advantageous in the health and food processing industries because they can be sterilized and cleaned. The materials would also benefit the automotive industry due to their light weight and reclaimability. Typical automobiles have over 50 kg of sound or vibration absorbing material. Using MSP absorbers would reduce this weight, improving fuel economy.

这个小企业创新研究第一阶段项目的目的是开发微缝板（MSP）吸声器，在广泛的频率范围内有效。 MSP吸收剂是可回收的，不可燃的，环保的。 传统的吸收剂，如泡沫和纤维，随着时间的推移而恶化，并捕获油和其他污染物。另一方面，MSP吸收器由铝和塑料制成，由于亚毫米尺寸孔隙中的粘性摩擦，声音被衰减。 面板与硬表面分离，并且当声粒子速度在狭缝中很高时最有效。 以前的工作已经证明了材料在特定频段的可行性。然而，MSP吸收器将需要在更宽的频率范围内有效，以便将它们用于更广泛的应用中。 所提出的工作的目标是进行测量和数值模拟研究，旨在提高MSP的性能，通过改变整个面板的狭缝尺寸和孔隙率，并通过设计可以放置在面板后面的基板。预计开发的MSP吸收剂将在许多商业应用中取代泡沫和纤维。该项目更广泛的影响/商业潜力将是开发上级传统玻璃纤维和泡沫吸收剂的微缝板（MSP）吸收剂。 保守估计，如果该产品被建筑界接受，其潜在数量将为每年2 000万平方英尺。 应用领域包括机场、火车站、公共汽车站的天花板面板以及商业建筑的声学管道。这些产品在健康和食品加工行业中将是特别有利的，因为它们可以被消毒和清洁。 由于其重量轻和可回收性，这些材料也将有利于汽车工业。典型的汽车具有超过50公斤的声音或振动吸收材料。使用MSP吸收器将减少这种重量，提高燃油经济性。