Modelling of Ultrasonic Response from Rough Defects

粗糙缺陷的超声波响应建模

• 批准号: EP/I018948/1
• 负责人: Michael Lowe
• 金额: $ 37.3万
• 依托单位: Imperial College London
• 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%2FI018948%2F1
• 关键词: Modelling; Ultrasonic; Response; Rough; Defects

This proposal seeks funding for a three year research programme into the back-scattering of ultrasound from rough surfaces, with specific application to the Non-Destructive Evaluation (NDE) of rough cracks. This addresses an important industrial goal: to be able to predict with confidence the reflection of ultrasound from a rough defect, at any chosen angle and frequency, which could then be used to make the case for a desired plan for inspection. The research will extend knowledge in two complementary areas: the creation of an envelope approach to predict the minimum back-scatter to be expected with confidence from a statistical description of the roughness, and the development of Finite Element modelling procedures to guarantee accurate, but efficient, modelling of the scattering from detailed representations of specific rough defects. The work will be undertaken jointly by a mathematical and an engineering team, both at Imperial College. The proposal is being submitted within the UK Research Centre in NDE (RCNDE) to the targeted research programme, the funding for which is earmarked by EPSRC for industrially driven research.

该提案旨在为一项为期三年的研究计划提供资金，该计划旨在研究粗糙表面的超声波反向散射，并具体应用于粗糙裂纹的无损评估（NDE）。这解决了一个重要的工业目标：能够以任何选定的角度和频率自信地预测粗糙缺陷的超声反射，然后可以用于制定所需的检查计划。该研究将扩展两个互补领域的知识：创建一个信封的方法来预测最小的后向散射预计与信心从粗糙度的统计描述，和有限元建模程序的发展，以保证准确，但有效的，从具体粗糙缺陷的详细表示散射建模。这项工作将由帝国理工学院的一个数学和工程团队联合进行。该提案正在英国无损检测研究中心（RCNDE）内提交给有针对性的研究计划，EPSRC为工业驱动的研究指定了资金。

项目成果

Rough surface reconstruction for ultrasonic NDE simulation

用于超声 NDE 模拟的粗糙表面重建

• DOI: 10.1063/1.4864873
• 发表时间: 2014
• 作者: Choi W

Homogenisation for elastic photonic crystals and dynamic anisotropy

• DOI: 10.1016/j.jmps.2014.06.006
• 发表时间: 2014-11-01
• 期刊: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
• 影响因子: 5.3
• 作者: Antonakakis, T.;Craster, R. V.;Guenneau, S.
• 通讯作者: Guenneau, S.

Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances.

• DOI: 10.1038/srep19238
• 发表时间: 2016-01-11
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Colombi A;Roux P;Guenneau S;Gueguen P;Craster RV
• 通讯作者: Craster RV

Clamped seismic metamaterials: ultra-low frequency stop bands

• DOI: 10.1088/1367-2630/aa6e21
• 发表时间: 2017-06-16
• 期刊: NEW JOURNAL OF PHYSICS
• 影响因子: 3.3
• 作者: Achaoui, Y.;Antonakakis, T.;Guenneau, S.
• 通讯作者: Guenneau, S.

An asymptotic theory for waves guided by diffraction gratings or along microstructured surfaces.

• DOI: 10.1098/rspa.2013.0467
• 发表时间: 2014-01-08
• 期刊: Proceedings. Mathematical, physical, and engineering sciences
• 作者: Antonakakis T;Craster RV;Guenneau S;Skelton EA
• 通讯作者: Skelton EA