1. A. A. Ketkovich, N. I. Yakovleva, and B. A. Chichigin, Kontrol’. Diagnostika, No. 3, 32 (2007).
2. B. Raj, T. Jayakumar, and M. Thavasimuthu, Practical Non-Destructive Testing (Woodhead, Sawston, 2002).
3. H. Schwenke, U. Neuschaefer-Rube, T. Pfeifer, and H. Kunzmann, CIRP Annals- Manufacturing Technology 51, 685 (2002).
4. Lei Yang, Meng Chen, Qian Zhu, et al., Sensors and Actuators A: Phys. 296, 17 (2019).
5. D. P. Noonan, P. Mountney, D. S. Elson, et al., in Proc. IEEE Int. Conf. on Robotics and Automation, Kobe, May 12 –17,
2009 (IEEE, New York, 2009), p. 4463.