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Ultrasonic Measurement and Beamforming using Optical Sensors

使用光学传感器进行超声波测量和波束形成

基本信息

批准号：
EP/F01371X/1
负责人：
Stephen Pierce
金额：
$ 100.85万
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FF01371X%2F1
关键词：
Ultrasonic Measurement Beamforming using Optical

项目摘要

The proposal describes the fundamental development and response quantification of sensitive, lightweight optical sensors for ultrasonic monitoring applications. The principal research components centre on providing a comprehensive theoretical and experimental understanding of the basic interactions between ultrasonic strain fields and optical fibre bragg grating (FBG) sensors. Two potential exploitation examples of the technology provide the background and application context for this research: ultrasonic beamforming in sonar arrays, and acoustic emission detection in structural health monitoring. These areas were carefully selected as they encompass the typical amplitude range of ultrasonic signals commonly encountered in engineering applications (in transmit sonar arrays the displacement fields are of high amplitude, often many 10's of nanometres, whereas in acoustic emission applications, the displacement field amplitudes may be lower than 100 picometres). Letters of support from THALES Underwater Systems (Sonar systems) and AIRBUS UK (Structural Health Monitoring) are included to help demonstrate the value of this work. Of course the opportunities for ultrasonic array monitoring are not confined to sonar systems. The increasing use of complex coded sequence actuation for ultrasonic arrays demonstrates a growing demand for improved ranging accuracy and resolution in sonar, non destructive testing and medical ultrasound fields. The potential for a lightweight, non-intrusive ultrasound field monitoring capability in such arrays provides a unique capability to provide absolute (calibrated against optical wavelength) measurement of the amplitude and phase characteristics at the output of these arrays. Such measurements facilitate calibration, optimisation of beamforming algorithms, and the capability to continuously monitor real-time changes under operational conditions. If successful the research will enable a step change for both areas of application in addition to related fields.

该提案描述了用于超声波监测应用的灵敏、轻型光学传感器的基本开发和响应量化。主要研究内容集中于对超声波应变场和光纤布拉格光栅（FBG）传感器之间的基本相互作用提供全面的理论和实验理解。该技术的两个潜在开发示例为本研究提供了背景和应用环境：声纳阵列中的超声波波束形成和结构健康监测中的声发射检测。这些区域经过精心选择，因为它们涵盖了工程应用中常见的超声波信号的典型振幅范围（在发射声纳阵列中，位移场具有高振幅，通常为数十纳米，而在声发射应用中，位移场振幅可能低于 100 皮米）。来自 THALES 水下系统（声纳系统）和 AIRBUS UK（结构健康监测）的支持信也包括在内，以帮助证明这项工作的价值。当然，超声波阵列监测的机会并不局限于声纳系统。超声阵列越来越多地使用复杂编码序列驱动，这表明声纳、无损检测和医疗超声领域对提高测距精度和分辨率的需求不断增长。这种阵列中轻量级、非侵入式超声场监测能力的潜力提供了一种独特的能力，可以在这些阵列的输出端提供幅度和相位特性的绝对（根据光波长校准）测量。此类测量有助于校准、波束形成算法的优化以及在操作条件下连续监控实时变化的能力。如果成功，这项研究将为除相关领域之外的两个应用领域带来重大改变。