Bazulin, E. G. Vopilkin, A. Kh. Tikhonov, D. S.
Published in
Russian Journal of Nondestructive Testing
Abstract—Methods for recording and analyzing echo signals with the aim of determining the type of a reflector and sizing it have been developed in ultrasonic flaw detection. The digital antenna focusing (DFA) method makes it possible to reconstruct the image of the entire discontinuity boundary using echo signals reflected from the bottom of the te...
Kaz’min, A. I. Fedyunin, P. A.
Published in
Russian Journal of Nondestructive Testing
AbstractThe development of metamaterials has led to the search and selection of effective methods for radio wave nondestructive testing of their electrophysical parameters. The existing approaches to testing, based on the recovery of the effective electrophysical parameters of metamaterials from the reflection and transmission coefficients of an el...
Novikov, V. F. Kulak, S. M. Parakhin, A. S.
Published in
Russian Journal of Nondestructive Testing
AbstractThe magnetoelastic demagnetization of a number of steels in the delivery condition under longitudinal elastic tension, transverse compression, and impact has been investigated. The estimation of the magnetoelastic sensitivity of the studied steel grades in the linear approximation is given. The possibility of determining the tensile and com...
Mostafa Rafienezhad-Masouleh, Honarvar, Farhang
Published in
Russian Journal of Nondestructive Testing
AbstractThe most popular transducers used in ultrasonic testing are piezoelectric transducers. The three major components of a piezoelectric transducer are the crystal, backing material, and matching layer. Traditionally, the optimal combination of these components is either found by trial and error or by using simple analytical models. These proce...
Bekher, S. A. Stepanova, L. N. Ryzhova, A. O. Bobrov, A. L.
Published in
Russian Journal of Nondestructive Testing
AbstractThe results of experimental studies of a nondestructive testing method for assessing the loading of bearing rings on an axle journal using the acoustoelasticity effect based on measuring the characteristics of elastic surface waves are presented. Reference blocks for loading with a difference in pilot diameters in the range from 38 to 119 \...
Dyakin, V. V. Kudryashova, O. V. Raevskii, V. Ya.
Published in
Russian Journal of Nondestructive Testing
Abstract—We consider the direct problem of magnetostatics of calculating the strength of the resulting magnetic field of a uniform cylinder of finite dimensions placed in an external magnetic field of arbitrary configuration. With the help of rather lengthy analytical transformations using the basic properties of hypergeometric and Legendre functio...
Wafik Harara,
Published in
Russian Journal of Nondestructive Testing
AbstractTungsten inert gas (TIG) welding had been applied to produce four double-V butt welded joints performed on thick plates made from 6082-T6 aluminum alloy. The thicknesses of the plates are 18, 45, 60, and 80 mm. This type of aluminum alloy is very sensitive to heat due to its high conductivity and high thermal expansion coefficient. Heat fro...
Xianghong Wang, Yang, Sheng Zhou, Xiaojie Hu, Hongwei
Published in
Russian Journal of Nondestructive Testing
AbstractThe existence of long period stacking ordered (LPSO) strengthening phases greatly improves the mechanical properties of Mg alloys, such as tensile strength, compressive strength and ductility. Therefore, volume fraction detection of LPSO phases plays an important role in understanding the properties of the alloy. Aiming at the traditional v...
Gobov, Yu. L. Popov, S. E.
Published in
Russian Journal of Nondestructive Testing
AbstractThe method of reconstructing the topography of defects in a ferromagnet in a normal magnetization field is considered. It is shown that with such magnetization the surface of the soft ferromagnetic is an equipotential surface. An approximation is proposed that allows one to obtain the topography of a defect from the results of measuring thr...
Markov, A. A. Maximova, E. A.
Published in
Russian Journal of Nondestructive Testing
Abstract—The results of investigating the parameters of ultrasonic signals when increasing rail testing speed presented. Signals from rail bolt holes were selected as test reflectors. It is shown that the holes closest to rail joints are not sounded fully, and signals due to them cannot be used as test reflectors. For a full assessment of the deter...
