Efficiency improving of ultrasonic control of products with flat-parallel boundaries by antenna arrays digital focusing by C-SAFT method

Chertishchev V.Yu., Generalov A.S.
UDC
620.179
DOI
10.18577/2307-6046-2016-0-10-10-10
Article PDF (Russian) (1 MB)
How to cite
Chertishchev V.Yu., Generalov A.S. Efficiency improving of ultrasonic control of products with flat-parallel boundaries by antenna arrays digital focusing by C-SAFT method // Proceedings of VIAM. 2016. No. 10. DOI: 10.18577/2307-6046-2016-0-10-10-10. URL: https://test.viam.ru/en/journal/2016/10/10
Keywords
ultrasonic nondestructive testing, combined synthetic aperture focusing technique, digital focusing, acoustic tract.
Abstract

The physical principles are considered and a simplified acoustic tract calculation algorithm for the C-SAFT antenna arrays digital focusing method with arbitrary size prism is developed heedful of any number of reflections and transformations of types of waves, improving efficiency of ultrasonic testing of products with flat-parallel boundaries. Existing techniques of digital focusing for given control items are either solve numerically the inverse task of diffraction with a certain set of assumptions and may not provide sufficient throughput capability, or use simplified algorithms which are not attentive to many important criteria (the presence of the inclined prism for antenna array, the attenuation of the signal amplitude on the way from the source to the receiver, the transformation of types of waves, etc.) that negatively affects the accuracy of the synthesized image and respectively reliability of control. To eliminate these shortcomings an algorithm for the reconstruction of

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