비파괴검사학회지 (Journal of the Korean Society for Nondestructive Testing)

  • 제37권2호
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  • Pages.84-90
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  • 2017
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  • 1225-7842(pISSN)
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  • 2287-402X(eISSN)
한국비파괴검사학회 (The Korean Society for Nondestructive Testing)
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An Efficient Ultrasonic SAFT Imaging for Pulse-Echo Immersion Testing

  • Hu, Hongwei (Changsha University of Science & Technology) ;
  • Jeong, Hyunjo (Division of Mechanical and Automotive Engineering, Wonkwang University)
  • 투고 : 2017.02.11
  • 심사 : 2017.04.10
  • 발행 : 2017.04.30
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초록

An ultrasonic synthetic aperture focusing technique (SAFT) using a root mean square (RMS) velocity model is proposed for pulse-echo immersion testing to improve the computational efficiency. Considering the immersion ultrasonic testing of a steel block as an example, three kinds of imaging were studied (B-Scan, SAFT imaging based on ray tracing technology and RMS velocity). The experimental results show that two kinds of SAFT imaging have almost the same imaging performance, while the efficiency of RMS velocity SAFT imaging is almost 25 times greater than the SAFT based on Snell's law.

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참고문헌

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