Multi-modal ultrasonic nondestructive evaluation with phased arrays

相控阵多模态超声无损评估

• 批准号: 4977-2007
• 负责人: Sedov, Alexander
• 金额: $ 0.73万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=473909
• 关键词: Multi; modal; ultrasonic; nondestructive; evaluation

The field of nondestructive evaluation (NDE) is concerned with the inspection of materials (without harming them),in order to keep the structures we live in, the machinery we work with, the vehicles we ride in safe and reliable. Ultrasound, used in medicine, is also used to conduct NDE inspections and to locate and identify dangerous flaws such as cracks in materials. Such ultrasonic inspections, however, involve a very complex combination of electrical and acoustic/elastic components. Modeling of these components is the focus of this research program. Specifically, we will develop computer-based models of ultrasonic NDE systems that use phased array transducers and mode-converted ultrasonic waves. Phased array transducers allow one to scan a component electronically making inspections cheaper and faster.They also allow us to generate and receive waves of different types, including mode-converted waves that are not observable by conventional transducers. Having the ability to model such multi-modal responses using phased arrays will allow us to develop significantly improved ultrasonic inspection systems. The direct beneficiaries will be the engineers who perform inspections on major structures such as aircraft, pipelines, bridges and nuclear reactors. The general public will also benefit by those engineers having the advanced methods developed here to keep those structures safe and reliable.

非破坏性评估（NDE）领域涉及材料的检查 （而不伤害他们），为了保持我们居住的结构，我们工作的机械，我们乘坐的车辆安全可靠。医学中使用的超声波也用于进行无损检测，并定位和识别材料中的裂纹等危险缺陷。然而，这种超声波检查涉及电气和声学/弹性部件的非常复杂的组合。这些组件的建模是本研究计划的重点。具体来说，我们将开发基于计算机的模型，超声无损检测系统，使用相控阵换能器和模式转换的超声波。相控阵换能器允许人们以电子方式扫描部件，使检测更便宜，更快速。它们还允许我们生成和接收不同类型的波，包括传统换能器无法观察到的模式转换波。具有使用相控阵列对这种多模态响应进行建模的能力将使我们能够开发出显着改进的超声波检测系统。直接受益者将是对飞机、管道、桥梁和核反应堆等主要结构进行检查的工程师。公众也将受益于这些工程师拥有先进的方法在这里开发，以保持这些结构的安全和可靠。