3D ultrasonic imaging based on synthetic aperture focusing technique and space-dependent threshold for detecting submillimetre flaws in strongly scattering metallic materials

2021 ◽  
Vol 124 ◽  
pp. 102523
Author(s):  
Liang Qin ◽  
Shuzeng Zhang ◽  
Yongfeng Song ◽  
Xiongbing Li
Keyword(s):  
Ultrasonic Imaging ◽  
Synthetic Aperture ◽  
Metallic Materials ◽  
Synthetic Aperture Focusing ◽  
Synthetic Aperture Focusing Technique

The Frequency-Domain Algorithm for Ultrasonic Imaging of Complex-Shaped Objects

2018 ◽  
Vol 769 ◽  
pp. 262-268
Author(s):  
Dmitry Dolmatov ◽  
Dmitriy A. Sednev ◽  
Roman Pinchuk
Keyword(s):  
Frequency Domain ◽  
Ultrasonic Imaging ◽  
Ultrasonic Waves ◽  
Synthetic Aperture ◽  
The Novel ◽  
Suggested Technique ◽  
Waves Propagation ◽  
Synthetic Aperture Focusing ◽  
Synthetic Aperture Focusing Technique

The algorithms based on Synthetic Aperture Focusing Technique are aimed at the determination of the imageries of the flaws in controlled objects. Ultrasonic imaging of complex-shaped objects requires specific algorithms which are able to take into account the complicated character of ultrasonic waves propagation. In this article, we suggested the novel frequency-domain algorithm for ultrasonic imaging of complex-shaped objects. This algorithm is based on Phase –shift migration theory and Stolt transform. The evaluation of suggested technique was done by the application of raw ultrasonic data which was obtained by using computer simulations. Derived results show that proposed algorithm is able to make accurate and precise imaging of flaws in complex-shaped objects.

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