Non-immersive Ultrasound Scanning and Inspection of Internal Defects Using a Water Droplet Coupling Device

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• 作者：Chi-Tse Kuo ; Yung-Chun Lee
• 关键词：Non ; destructive evaluation (NDE) ; Non ; immersion ultrasound ; Ultrasound image scanning ; C ; scan ; Water ; droplet coupling
• 刊名：Journal of Nondestructive Evaluation
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：35
• 期：2
• 全文大小：1,765 KB
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• 作者单位：Chi-Tse Kuo (1)
  Yung-Chun Lee (1)
  
  1. Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan
  
• 刊物类别：Engineering
• 刊物主题：Structural Mechanics
  Characterization and Evaluation Materials
  Vibration, Dynamical Systems and Control
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4862

文摘

This paper investigates a method for conducting conventional ultrasound image scanning (C-scan) in a non-immersive manner. An ultrasound coupling device is developed to couple a focusing ultrasound transducer with a sample under test through a water droplet. The transducer is immersed in a chamber filled with water. A hole-opening at the chamber’s bottom surface and a polymer film sealing the hole allow focused ultrasound to pass and reach the sample through a water droplet. An ultrasound scanning system is constructed and used for carrying out C-scan on two different samples containing pre-fabricated internal defects. By comparing the images obtained from using both conventional water immersion method and the proposed water-droplet coupling method, we demonstrate the feasibility and capability of this new type of non-immersive ultrasound image scanning method.