Determination of acoustical material properties (BeKAM)

声学材料特性的测定 (BeKAM)

• 批准号: 222271124
• 负责人: Professor Dr.-Ing. Bernd Henning
• 金额: --
• 依托单位: Fachgebiet Elektrische Messtechnik (EMT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/222271124?language=en
• 关键词: Determination; acoustical; material; properties; BeKAM

The presence is and the future will be marked by the development of new hybrid polymer materials, which considerably are superior in terms of cost effectiveness in comparison to the old material generation. Increasing use of such materials leads in the area of the ultrasound based measuring technology both to new possibilities and to aggravating factors. Synthetic materials offer substantially more degrees of freedom to design constructive as well as acoustically functional elements. Their considerably more complex acoustic qualities are adverse. The frequency and mostly direction-dependent sound velocity, sound absorption and acoustical impedance vary considerably with the temperature, the age or the water content differently than at metals. It is important to know the range of these changed material properties to consider that during the design process. At present, such material characteristic quantities are neither standardized nor available on the necessary scale. With a wave guide based measurement system all relevant acoustical material properties shall be determined with only a well-conditioned, standardized test specimen and made available in a database.

新的混合聚合物材料的开发是当前和未来的标志，与旧材料相比，新的混合聚合物材料在成本效益方面具有明显的上级优势。越来越多地使用这样的材料导致在基于超声的测量技术的领域中出现新的可能性和恶化因素。合成材料为设计结构性和声学功能元件提供了更大的自由度。它们相当复杂的声学品质是不利的。频率和主要依赖于方向的声速、声吸收和声阻抗随着温度、年龄或含水量而变化，与金属不同。重要的是要知道这些变化的材料特性的范围，以考虑在设计过程中。目前，这种材料特征量既没有标准化，也没有必要的规模。对于基于波导的测量系统，所有相关的声学材料特性应仅使用条件良好的标准化试样进行测定，并在数据库中提供。

项目成果

Reliable computation of roots in analytical waveguide modeling using an interval-newton approach and algorithmic differentiation

使用区间牛顿法和算法微分对分析波导建模中的根进行可靠计算

• DOI: 10.1109/tuffc.2013.2858
• 发表时间: 2013
• 期刊: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
• 作者: F. Bause;A. Walther;J. Rautenberg;B. Henning
• 通讯作者: B. Henning

Determination of the material properties of polymers using laser-generated broadband ultrasound

• DOI: 10.5194/jsss-5-187-2016
• 发表时间: 2016-01-01
• 期刊: JOURNAL OF SENSORS AND SENSOR SYSTEMS
• 影响因子: 1
• 作者: Claes, Leander;Meyer, Thorsten;Henning, Bernd
• 通讯作者: Henning, Bernd

Transient modeling of ultrasonic guided waves in circular viscoelastic waveguides for inverse material characterization

• DOI: 10.1088/0957-0233/26/9/095602
• 发表时间: 2015-09-01
• 期刊: MEASUREMENT SCIENCE AND TECHNOLOGY
• 影响因子: 2.4
• 作者: Bause, Fabian;Gravenkamp, Hauke;Henning, Bernd
• 通讯作者: Henning, Bernd

A6.1 - Utilizing guided acoustic waves to measure dispersive material properties of polymers

A6 1 - 利用引导声波测量聚合物的色散材料特性

• DOI: 10.5162/sensor2015/a6.1
• 发表时间: 2015
• 作者: J. Rautenberg;F. Bause;B. Henning
• 通讯作者: B. Henning