{"title":"Application of Logistics Regression Model in Stress Detection of Medium-Carbon Steel Components Based on Multigradient Magnetic Barkhausen Noise Method","authors":"Jingyu Di, Junxia Gao, Jing Li, Jie Wang","doi":"10.1134/S1061830926600346","DOIUrl":"10.1134/S1061830926600346","url":null,"abstract":"<p>It is necessary to perform low-cost, rapid, in-situ, and nondestructive testing of the stress on key ferromagnetic components using Magnetic Barkhausen Noise (MBN) method. This work explored the internal physical mechanisms between the MBN signals and stress, established the coupling model between the magnetic signals and stress in micro-level, and respectively studied the effects of axial and transverse stress on dynamic characteristics of magnetic domain walls under periodic magnetization. A regression model based on the logistic function was formulated to characterize the coupling relationship between the MBN signatures and stress, and parameters of the proposed model have been reasonably explained. Then, based on the generation principle of MBN signals, a new multigradient MBN testing method is proposed. The proposed method can significantly expand the number of available features, thus more comprehensive testing can be conducted. Next, we performed the axial tension and compression test experiments on standard 45# medium-carbon steel specimens. Under five testing gradients, we trained the prediction model to estimate its parameters using experimental data. The final results show the goodness of fit of all is above 0.90, the Pearson correlation coefficient of all is above 0.95. Therefore, the aforementioned theory has been effectively validated.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 7","pages":"983 - 994"},"PeriodicalIF":1.3,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. S. Manoj Abraham, D. F. Jingle Jabha, R. Joselin
{"title":"Assessment of Tensile Behavior in XLPE Power Cables through Acoustic Emission Monitoring","authors":"D. S. Manoj Abraham, D. F. Jingle Jabha, R. Joselin","doi":"10.1134/S1061830926600711","DOIUrl":"10.1134/S1061830926600711","url":null,"abstract":"<p>The overall strength of the cable depends on many factors such as aging, thermal effects and stress developed. In this work, the failure of conductor is determined by investigating its ability using a Non Destructive Method. The dielectric strength and stiffness of various Cross linked polyethylene (XLPE) cable for different mechanical properties are detected, monitored and analyzed using this method. Finally, a comparison is made between the measured results and the actual value of the pure specimen. The results describe that the development of Acoustic Emission (AE) technique is very efficient to test and evaluate the tensile performance of power cables and to ensure the integrity and safety of the underground power lines at any high voltage applications and during its maintenance. Also, it is observed that before breakdown these cables have the ability to elongate at a range of 150 to 200%.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 7","pages":"928 - 943"},"PeriodicalIF":1.3,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gao Jie, Xiang Jingkai, Song Guorong, Zeqi Bian, Lyu Yan, He Cunfu
{"title":"Experimental Measurement and Modeling Analysis of Cemented Casings Using Ultrasonic Circumferential Shear Horizontal Waves","authors":"Gao Jie, Xiang Jingkai, Song Guorong, Zeqi Bian, Lyu Yan, He Cunfu","doi":"10.1134/S1061830925605501","DOIUrl":"10.1134/S1061830925605501","url":null,"abstract":"<p>An alternative approach was proposed to detect the damage in cementing casing pipes by using circumferential guided wave detection technology. Firstly, the circumferential shear horizontal (C-SH) wave propagation problem of the steel pipe covered by semi-infinite cement was solved by the double polynomial expansion method (combining the Legendre polynomial expansion method and the Laguerre polynomial expansion method). Based on the typical application range corresponding to different polynomial types, theoretical modeling of wave behavior in the substrate and covering area is carried out separately. The dispersion equations of the C-SH wave in the cylindrical coordinate system can be derived based on the orthogonal completeness property. To verify the accuracy of the proposed method, a consistency analysis was conducted between the theoretical calculation results and available reference data. Meanwhile, a time domain simulation for cemented casings was established to confirm the feasibility of the proposed approach. Finally, the propagation characteristics of C-SH waves in cementing casing structures were experimentally analyzed, and the variation pattern of circumferential SH waves by cementation defects at different angles was also investigated. It provides a new research path for identifying typical defects in cementing casing.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 7","pages":"912 - 927"},"PeriodicalIF":1.3,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yinghonglin Liu, Duo Feng, Wei Li, Zhijun Yang, Haifeng Xu
{"title":"Acoustic Emission-based Tensile-tensile Fatigue Damage Monitoring and Quantification of Multidirectional Pre-perforated Composite Laminates","authors":"Yinghonglin Liu, Duo Feng, Wei Li, Zhijun Yang, Haifeng Xu","doi":"10.1134/S106183092560580X","DOIUrl":"10.1134/S106183092560580X","url":null,"abstract":"<p><b>Abstract—</b>Glass fiber-reinforced composites (GFRP) are prone to undetectable damage, posing challenges to their safe application in aerospace, transportation, and other fields. This study integrated acoustic emission (AE), microscopic visualization, and digital image correlation (DIC) techniques to monitor and quantify damage in multidirectional pre-perforated GFRP laminates under tensile-tensile fatigue loading. It analyzed the intrinsic correlations between surface strain evolution, AE characteristic parameters (amplitude, energy, duration, etc.), and damage modes (matrix cracking, delamination, fiber breakage) of laminates with different fiber orientations, and established the AE-based damage variable <i>D</i><sub>AE</sub>. Its validity was verified using stress-strain curves and damage micromorphology. Results showed that fiber orientation significantly affected the mechanical response and damage behavior of laminates. AE parameters and surface strain effectively characterized damage mechanisms, with obvious differences in strain distribution, stress-strain curves, and AE signals among laminates with different orientations. The engineering error of <i>D</i><sub>AE</sub> for fatigue damage characterization was within 20%, confirming the feasibility of AE technology in quantifying composite fatigue damage and providing key support for composite structural damage monitoring and life prediction.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"729 - 746"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of Distribution Inhomogeneity for Longitudinal Ultrasonic Wave Velocity in Cast Aluminum-Matrix Composite Reinforced with Hollow Ceramic Microspheres","authors":"A. V. Gonchar, A. A. Solovyov, K. V. Kurashkin","doi":"10.1134/S1061830926601303","DOIUrl":"10.1134/S1061830926601303","url":null,"abstract":"<p>The article deals with the development of technique for ultrasonic inspection of cast aluminum matrix composites reinforced with hollow ceramic microspheres. The aim of the study was to evaluate the possibility of using ultrasonic scanning by a small-sized piezoelectric transducer to evaluate the distribution heterogeneity of longitudinal wave velocity and structure. Six plane-parallel circular cross-section specimens were studied, differing in the total volume fraction of micropores and reinforcing hollow microspheres. The propagation velocity of longitudinal waves was determined by the ultrasonic echo method. Scanning was performed along two mutually perpendicular directions. It is shown that the velocity of longitudinal waves reaches maximum values in the peripheral zones and decreases monotonously at the approach to the center for all studied specimens, which is due to the peculiarities of melt crystallization during casting with mechanical mixing. It is found that the standard deviation of the velocity of longitudinal waves over the specimen cross-section and the average amplitude of the first echo depend linearly on the total volume fraction of micropores and reinforcing microspheres. It is concluded that during nondestructive testing of cast aluminum-matrix composites, joint analysis of average velocity, its standard deviation and first echo amplitude makes it possible to estimate the total volume fraction of micropores and reinforcing microspheres and characterize the heterogeneity of their distribution over the section of product. In general, the conducted studies have shown the prospects of using ultrasonic cross-sectional scanning for rapid quality assessment of cast aluminum-matrix composites reinforced with hollow ceramic microspheres.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"707 - 718"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. G. Batulin, A. V. Kutergin, D. S. Uvin, I. V. Yanilkin, A. L. Zinnatullin, M. D. Kuznetsov, M. A. Cherosov, M. V. Uba, O. N. Vasilenko
{"title":"Wear of Rotary Valves of Cryocoolers: Analysis by Nondestructive Testing Methods","authors":"R. G. Batulin, A. V. Kutergin, D. S. Uvin, I. V. Yanilkin, A. L. Zinnatullin, M. D. Kuznetsov, M. A. Cherosov, M. V. Uba, O. N. Vasilenko","doi":"10.1134/S1061830926601327","DOIUrl":"10.1134/S1061830926601327","url":null,"abstract":"<p>The article presents the results of a study on wear in the rotary valves of Gifford–McMahon cryocoolers. The study was conducted using a rotor and stator friction pair as a case study after 18 000–20 000 h of operation. Methods of visual-optical control using a metallurgical microscope, profilometry, and elemental surface analysis were employed. The characteristics of wear in the composite and metal components of the rotor and stator are described; data regarding surface roughness, scratch depth, and shape deformation are presented. Elemental analysis was performed on both the contact and reverse sides of the rotor and stator. Possible causes of radial scratches and their impact on cryocooler performance were identified. The results of this study may be useful to improve the reliability and durability of cryocoolers.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"841 - 847"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu. G. Matvienko, D. V. Chernov, T. D. Balandin, O. M. Yaroslavtseva
{"title":"Error Compensation of Planar Location of Acoustic Emission Sources in Composite Materials Using the Jacobian Matrix","authors":"Yu. G. Matvienko, D. V. Chernov, T. D. Balandin, O. M. Yaroslavtseva","doi":"10.1134/S1061830926601315","DOIUrl":"10.1134/S1061830926601315","url":null,"abstract":"<p>In this paper, a methodology for improving the accuracy of planar location of acoustic emission (AE) source in composite materials has been presented. The effect of acoustic property anisotropy on AE pulse propagation velocity and on the planar location error has experimentally been established using the standard algorithm. The maximal error in planar location for an isotropic aluminum plate has not exceed 10.9 mm, whereas for a composite material plate, it has reached 104.9 mm. To reduce the error in calculating the coordinates of acoustic emission sources caused by changes in velocity depending on the direction of propagation of acoustic signals, an algorithm for compensatory scaling of planar location using the Jacobian matrix has been developed. The algorithm has been implemented during preliminary tests simulating AE pulses at the nodes of a coordinate grid applied to the surface of a composite plate. The coefficients of the Jacobian matrix and the components of the residual vector have been calculated based on the results of constructing a discrete field of indication displacements. As a result of applying the developed method, the average error of planar location compared to the standard algorithm and the Δ<i>t</i>-mapping method decreased by approximately two and 1.2 times, respectively.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"719 - 728"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Feilin Huang, Gao Ma, Hyeon-Jong Hwang, Su-Min Kang
{"title":"High-Resolution Ultrasonic Total Focusing Method Optimized by Deconvolution for Concrete Defect Evaluation","authors":"Feilin Huang, Gao Ma, Hyeon-Jong Hwang, Su-Min Kang","doi":"10.1134/S1061830926600437","DOIUrl":"10.1134/S1061830926600437","url":null,"abstract":"<p>Concrete structures are prone to internal defects during long-term service, which impairs their safety and durability. Although the ultrasonic total focusing method (TFM) is widely applied to concrete defect detection, its imaging is often affected by noise, signal aliasing, and localization errors.To improve the accuracy of defect detection in concrete structures, this study proposes a deconvolution-optimized ultrasonic TFM imaging method (DC-TFM), achieving high-resolution detection through multi-step signal processing. Firstly, Wiener deconvolution was adopted for preprocessing the original signals collected by the ultrasonic array. Using the measured system response as the convolution kernel, the signal pulse width was compressed to effectively suppress signal aliasing. Secondly, the propagation characteristics of surface waves were calculated and a window function was applied to eliminate the interference of direct surface waves on defect signals, enhancing the distinguishability of defect scattering signals. Finally, the processed signals were reconstructed for imaging based on the total focusing algorithm. The effectiveness of the proposed method in detecting typical concrete defects, such as double circular holes and inclined void, was systematically verified through numerical simulations and experiments. Analysis results showed that compared with the traditional TFM and the TFM corrected only by pulse peak delay (PPD), the proposed DC-TFM method significantly reduced localization errors, remarkably improved longitudinal resolution, and achieved clearer identification of defect boundaries, which exhibited higher shape restoration accuracy for dense defects and inclined defects. The imaging signal-to-noise ratio (SNR) increased up to 194%, and the maximum depth localization error was reduced by 92%.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"776 - 792"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. V. Mikhailov, A. E. Kuskov, V. V. Lopatin, A. N. Kukushkin, Ya. G. Smorodinskii, V. N. Kostin, D. V. Novgorodov, A. V. Nikitin, L. V. Mikhailov
{"title":"Determination of Detectability Thresholds for Crack-Like Defects During In-Line Magnetic Diagnostics","authors":"A. V. Mikhailov, A. E. Kuskov, V. V. Lopatin, A. N. Kukushkin, Ya. G. Smorodinskii, V. N. Kostin, D. V. Novgorodov, A. V. Nikitin, L. V. Mikhailov","doi":"10.1134/S1061830926601480","DOIUrl":"10.1134/S1061830926601480","url":null,"abstract":"<p>In this study, the limitations of the magnetic flux leakage (MFL) method for detecting single cracks in pipelines in accordance with GOST R 55999-2014 have been defined and refined. Parametric finite-element 2<i>D</i> and 3<i>D</i>-models validated on actual defects have been used to calculate the magnetic leakage field strength depending on defect’s geometric parameters. It has been established that the minimal defect length for transitioning to a 2<i>D</i> model is 200 mm. Reliable detection (probability >90%) has been shown to be achieved at a threshold value of <i>dHx</i> = 15 A/cm. The minimal detectable crack depths have been determined as a function of crack opening: 0.56 of the wall thickness for an opening of 20 μm, 0.20 for 50 μm, and 0.12 for 100 μm. Cracks with an opening of 10 μm are not detected even at a depth of 0.85 of the wall thickness.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"810 - 823"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. V. Mikhailov, A. V. Mikhailov, A. V. Nikitin, Ya. G. Smorodinskii, V. N. Kostin
{"title":"Method for Reconstructing the Shape of Surface Corrosion Defects Using B-splines","authors":"L. V. Mikhailov, A. V. Mikhailov, A. V. Nikitin, Ya. G. Smorodinskii, V. N. Kostin","doi":"10.1134/S1061830926601376","DOIUrl":"10.1134/S1061830926601376","url":null,"abstract":"<p>In this paper, the theoretical foundations of a method for reconstructing the geometry of corrosion defects in ferromagnetic objects based on magnetic leakage field data have been considered. The proposed approach relies on a parametric description of the defect as a spline surface, the structure of which is formed based on the characteristic distribution features of magnetic field strength components and their spatial derivatives. The coordinates of the defect region boundaries are determined by the extrema of the first derivative of the normal component of the magnetic field along the magnetization direction, while the locations of internal control points are determined by the extrema of the tangential component within the found boundaries. The depths of the control points are refined through an optimization procedure by minimizing the standard deviation between the calculated and target magnetic fields. The feasibility of the approach has been demonstrated in a numerical experiment with a symmetric corrosion defect. It has been shown that the method makes it possible to reproduce the general shape of the defect region and achieve good agreement in terms of its integral characteristics. The relative error in volume reconstruction has been 2.4%, which confirms the possibility of using the proposed approach as a basis for further solving the inverse problem of reconstructing the geometry of defects based on magnetic non-destructive testing data.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"62 6","pages":"803 - 809"},"PeriodicalIF":1.3,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}