Nondestructive Testing Method for Curved Surfaces Based on the Multi-Gaussian Beam Model

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• 作者：Zongxing Lu ; Chunguang Xu ; Dingguo Xiao ; Fanwu Meng
• 关键词：Curved surface ; Ultrasonic testing ; Multi ; Gaussian beam model ; Path planning ; Coordinate transformation
• 刊名：Journal of Nondestructive Evaluation
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：34
• 期：4
• 全文大小：1,842 KB
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• 作者单位：Zongxing Lu (1)
  Chunguang Xu (1)
  Dingguo Xiao (1)
  Fanwu Meng (1)
  
  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China
  
• 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

A nondestructive testing method for curved surfaces based on the multi-Gaussian beam model is proposed in this study. The multi-Gaussian beam model for composites coupled with water is introduced into an automatic ultrasonic testing system. A mathematical model of the received beam field is established to analyze the effect of different testing parameters on the receiving transducer. The normal vector can be calculated by variational methods to achieve the transmitting transducer’s position and orientation. The position and orientation of the receiving transducer can be achieved by coordinate transformation method. The simulation and experiments illustrate the validity and effectiveness of the proposed method. Experimental results indicate that the received signal is strong and measurement accuracy is high with the proposed method. The proposed method provides an effective solution to curved composite surface parts and would significantly benefit industrial development. Keywords Curved surface Ultrasonic testing Multi-Gaussian beam model Path planning Coordinate transformation