SUB-MHZ ULTRASONIC INSPECTION

亚兆赫超声波检测

• 批准号: EP/K031201/1
• 负责人: David Hutchins
• 金额: $ 33.38万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FK031201%2F1
• 关键词: SUB; MHZ; ULTRASONIC; INSPECTION

This proposal is associated with the targeted research programme of the UK Research Centre for NDE (RCNDE), an EPSRC-supported research centre. It is clear from discussions held with both academics and industrial members within RCNDE that the ultrasonic inspection of highly scattering/attenuating materials is still a large problem that needs to be addressed. The particular materials in question - such as thermal insulation materials, refractory linings, rubbers and thick sections of glass fibre reinforced polymer composites - are industrially very important. In many cases, there are not many alternatives for inspection, in particular if portability and non-radiological methods are required. The research will investigate new ways in which ultrasonic frequencies below 1 MHz can be applied to this problem. This will require research into various aspects of the measurement. Firstly, new transducer designs will be needed, that can generate signals with the required bandwidth. It is planned to try micro fibre composite (MFC) devices for this, teamed up with more conventional PZT elements. These will then be used with various forms of coded waveform, so that cross-correlation can enhance the measurement in terms of detectability and reduced signal to noise levels. In addition, scattering from interfaces and non-defect objects casue clutter in the signal. It is planned to investigate ways of reducing these effects, byusing other ideas such as (a) using a collimation system, and (b) using polarised shear waves. Finally, a system will be dseigned which uses some or all of these elements, and which can tuned to operate at different frequency ranges, depending on the application.The work will be performed in collaboration with three industrial sectors: marine vessel manufacture, the oil and gas industries, and metal forming. All have particular problems with methods of inspecting acoustically attenuating and scattering material. These include coatings and thick composites; thermal insulation layers, corrosion under insulation, and risers; refractory materials, and others. As part of the work, the research will be used to design a portable system that can be used in these industries. This will be tested in the laboratory, before field tests are performed in each case.

该建议与EPSRC支持的研究中心的英国NDE研究中心（RCNDE）的目标研究计划有关。从与RCNDE中的学者和工业成员进行的讨论可以明显看出，对高度散射/衰减材料的超声检查仍然是一个需要解决的大问题。所讨论的特定材料（例如热绝缘材料，难治性衬里，橡胶和厚度的玻璃纤维增​​强聚合物复合材料）在工业上非常重要。在许多情况下，检查的替代方法不多，特别是如果需要可移植性和非放射学方法。该研究将调查可将低于1 MHz的超声波频率应用于此问题的新方法。这将需要研究测量的各个方面。首先，将需要新的传感器设计，这可能会产生所需带宽的信号。计划为此尝试微纤维复合材料（MFC）设备，并与更常规的PZT元素合作。然后将它们与各种形式的编码波形一起使用，因此互相关可以根据可检测性和降低信号为噪声水平增强测量值。另外，从接口和非缺陷对象散射信号中的杂物。计划通过（a）使用准直系统来研究减少这些效果的方法，以及（b）使用偏光剪切波。最后，将对使用某些或全部这些元素的系统进行调整，并且可以根据应用程序进行调整以在不同的频率范围内操作。这项工作将与三个工业领域合作执行：船用船只制造，油气工业，石油和天然气工业和金属形成。所有人都有特殊的问题检查衰减和散射材料的方法。这些包括涂料和厚复合材料；热绝缘层，隔热下的腐蚀和立管；难治材料等。作为工作的一部分，该研究将用于设计可用于这些行业的便携式系统。在每种情况下进行现场测试之前，将在实验室进行测试。

项目成果

Ultrasonic Nondestructive Evaluation Systems - Industrial Application Issues

超声波无损评估系统 - 工业应用问题

• DOI: 10.1007/978-3-319-10566-6_4
• 发表时间: 2015
• 作者: Caporale S

Ultrasonic NDE of thick polyurethane flexible riser stiffener material

• DOI: 10.1080/10589759.2016.1241253
• 发表时间: 2017-10
• 期刊: Nondestructive Testing and Evaluation
• 影响因子: 2.6
• 作者: I. Mohamed;D. Hutchins;L. Davis;S. Laureti;M. Ricci

Pulse Compression Ultrasonic Non Destructive Evaluation of Thick Polymer Samples

厚聚合物样品的脉冲压缩超声波无损评估

• 发表时间: 2014
• 作者: Moammed, I

Optimization of the pulse-compression technique applied to the infrared thermography nondestructive evaluation

• DOI: 10.1016/j.ndteint.2017.01.011
• 发表时间: 2017-04
• 期刊: Ndt & E International
• 影响因子: 4.2
• 作者: G. Silipigni;P. Burrascano;D. Hutchins;S. Laureti;R. Petrucci;L. Senni;L. Torre;M. Ricci

The use of pulse-compression thermography for detecting defects in paintings

• DOI: 10.1016/j.ndteint.2018.05.003
• 发表时间: 2018-09-01
• 期刊: NDT & E INTERNATIONAL
• 影响因子: 4.2
• 作者: Laureti, S.;Sfarra, S.;Ricci, M.
• 通讯作者: Ricci, M.