Frequency-domain imaging algorithm for ultrasonic testing by application of matrix phased arrays

Abstract

Abstract. Constantly increasing demand for high-performance materials and systems in aerospace industry requires advanced methods of nondestructive testing. One of the most promising methods is ultrasonic imaging by using matrix phased arrays. This technique allows to create three-dimensional ultrasonic imaging with high lateral resolution. Further progress in matrix phased array ultrasonic testing is determined by the development of fast imaging algorithms. In this article imaging algorithm based on frequency domain calculations is proposed. This approach is computationally efficient in comparison with time domain algorithms. Performance of the proposed algorithm was tested via computer simulations for planar specimen with flat bottom holes.

Application of Fourier-Domain Post-Processing Technique for Ultrasonic Imaging with Matrix Phased Arrays in Advanced Manufacturing of Details and Machines

“…In previous articles, the Fourier-domain algorithm for Full-Matrix volumetric imaging with matrix phased arrays was proposed. Its performance was evaluated by the application of simulation and experimental data [13,14]. However, the performance of the algorithms should be compared with the results obtained via the tools which are implemented in commercial software.…”

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

“…In ultrasonic imaging, frequency-domain algorithms were also introduced for various imaging geometries and types of applied ultrasonic transducers [12][13][14][15][16][17][18]. Such algorithms are based on Phase-Shift migration and Stolt transform which initially were developed for the needs of seismology [19,20].…”