Measuring the thickness of metal pipe walls with ultrasound

用超声波测量金属管壁的厚度

• 批准号: 514865-2017
• 负责人: Xu, Yuan
• 金额: $ 1.82万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640086
• 关键词: Measuring; thickness; metal; pipe; walls

Pure Technologies is a world leader in the development and application of innovative technologies forinspection, monitoring and management of critical infrastructure. Non-destructive testing (NDT), such asultrasound techniques, can be used to estimate the wall thickness for identifying the specific areas along apipeline that requires the immediate renewal. Compared to other conventional NDTs, ultrasound techniqueshave accurate location detection, high sensitivity and efficiency, and low cost. It has received a significantattention from the industrial point of view. The signal received by the conventional ultrasound thicknessmeasurement device contains abundant information such as that related to the corrosion either on the coating oron the surface of the metal pipe .A key issue of measuring wall thickness with ultrasound is that the cement coating around the pipeline affectsthe accuracy of the measurement. If the distance between reflected signals is shorter than half of the spatialspan of the incident pulse, the echoes from various interfaces might overlap. It is often difficult to distinguishthe signals due to the coating from those due to the wall. The goal of this project is to develop an advancedultrasound thickness measurement system integrating with effective signal processing methods for identifyingthe reflected signals of interest to accurately assess the pipe wall. We will also assess if an ultrasound arraysystem can improve the detectability of the coating layer.

Pure Technologies是关键基础设施检查、监控和管理创新技术开发和应用领域的全球领导者。无损检测（NDT），如超声波技术，可用于估计壁厚，以确定需要立即更新的沿着管线的特定区域。与其他传统的无损检测技术相比，超声技术具有定位准确、灵敏度高、效率高、成本低等优点。从工业的角度来看，它受到了极大的关注。传统的超声波测厚装置接收到的信号中包含着丰富的信息，如涂层或金属管道表面的腐蚀等，而管道周围的水泥涂层影响测量精度是超声波测厚的关键问题.如果反射信号之间的距离小于入射脉冲的空间跨度的一半，则来自各个界面的回波可能重叠。通常很难将涂层引起的信号与壁引起的信号区分开来。本项目的目标是开发一种先进的超声测厚系统，结合有效的信号处理方法，识别感兴趣的反射信号，以准确评估管壁。我们还将评估超声阵列系统是否可以提高涂层的可检测性。