Russian Journal of Nondestructive Testing最新文献

{"title":"High Cycle Fatigue Damage Monitoring Based on Bhattacharyya Coefficient of Acoustic Emission","authors":"Qingzhao Zhou,&nbsp;Bangchun Wen","doi":"10.1134/S1061830925600303","DOIUrl":"10.1134/S1061830925600303","url":null,"abstract":"<p>This study investigates the application of acoustic emission (AE) signals for monitoring fatigue damage during high-cycle fatigue (HCF) tests and proposes a fatigue damage monitoring strategy based on the Bhattacharyya coefficient (BC). A comprehensive description of the AE signal processing workflow is provided, encompassing the acquisition of signal waveform data, the calculation of probability distributions, and the utilization of the BC to quantify the similarity between reference and true distributions. Comparative analysis with traditional infrared thermography demonstrates that BC exhibits superior sensitivity in HCF tests, effectively capturing the progressive stages of fatigue damage. Additionally, the study evaluates the influence of varying bin widths on BC calculations and identifies an optimal bin width (BW). The optimal bin width not only balances the monitoring sensitivity and stability but also reduces the influence of external noise.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"331 - 342"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162684","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":"Ultrasonic Testing of Acoustic and Elastic Properties of 12Kh18N10T Steel Irradiated with Fast Electrons","authors":"A. V. Vasiliev,&nbsp;D. Yu. Biryukov,&nbsp;V. N. Kostin,&nbsp;A. F. Zatsepin","doi":"10.1134/S1061830925700032","DOIUrl":"10.1134/S1061830925700032","url":null,"abstract":"<p>Special steel grades such as ChS-68 and 12Kh18N10T are used in nuclear power engineering, the space industry, medicine and other important areas of the technical sphere, and during operation are exposed to various types of destructive effects, including radiation load. This paper presents the results of a study of the effect of high-energy electron radiation on the acoustic properties of austenitic stainless-steel grade 12Kh18N10T. It was experimentally established that after exposure to electrons with an energy of 10 MeV, such parameters as the attenuation coefficient of ultrasound and the propagation velocity of transverse waves and Rayleigh waves change. These changes are due to defect formation and structural modifications of the material caused by radiation exposure. The obtained data allow us to conclude that it is necessary to take into account changes in the acoustic properties of steels when assessing their performance under radiation exposure.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"257 - 265"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162793","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":"Asymptotics of Ultrasonic Sounding Field in Anisotropic Materials","authors":"E. V. Glushkov,&nbsp;N. V. Glushkova","doi":"10.1134/S1061830925700044","DOIUrl":"10.1134/S1061830925700044","url":null,"abstract":"<p>To model the wave field of an ultrasonic transducer in materials with strong anisotropy (monocrystalline alloys of turbine blades, composite materials, welded joints, etc.), a physically descriptive asymptotic representation is obtained for quasi-spherical body waves excited by a surface source in an arbitrarily anisotropic elastic half-space. The asymptotics is derived by the stationary phase method from the integral representation of the solution in terms of contour integrals of the inverse Fourier transform. The peculiarities of their derivation and numerical implementation are discussed on the examples of a transversely isotropic composite material and a monocrystalline nickel alloy with cubic anisotropy. The dependence of  the stationary points on the direction is more complicated here than in the isotropic case, up to the appearance of multiple stationary points and folds, giving rise to additional wave fronts and caustics. A comparison is made with the plane waves described by eigensolutions of the classical Christoffel equation. It is shown that, despite the phenomenon of multiple wave fronts, varying the plane-wave orientation allows us to obtain the same group velocity vectors as for any of the waves described by the asymptotics.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"266 - 279"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162686","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":"Development of Methods for Shell and Fuel Layer Characterization of Indirect-Drive Cryogenic Target for Laser Thermonuclear Fusion","authors":"E. Yu. Zarubina,&nbsp;M. A. Rogozhina,&nbsp;E. Yu. Solomatina,&nbsp;I. A. Chugrov","doi":"10.1134/S1061830925700056","DOIUrl":"10.1134/S1061830925700056","url":null,"abstract":"<p>Indirect-drive cryogenic target is a located in box-converter hollow spherical shell-capsule with spherically symmetric solid layer of deuterium–tritium fuel on its inner surface. Placing a cryogenic target in an experiment on ignition at a megajoule energy level facility is preceded by thorough characterization of all component elements of the target and characterization of finished target. This paper describes the characterization method of the entire external surface of the cryogenic target using a confocal scanning, and presents the results of developing an optical shadow method and an X-ray phase-contrast method for characterization the cryogenic fuel layer in the target. The results of stitching the entire external surface are used for interpretation of the results of experiments on the solid fuel layer formation in a cryogenic target. The developed program system for characterization of fuel layers is used for measuring the liquid fuel, for characterization of the solid fuel layer parameters and for evaluation the robustness of the characterization results.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"343 - 352"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162685","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":"Terahertz Detection and Evaluation of Thermal Barrier Coating Thickness","authors":"Bin Han,&nbsp;Jianchao Li,&nbsp;Qing He,&nbsp;Zhenwei Zhang,&nbsp;Yuejin Zhao,&nbsp;Huiying Wang","doi":"10.1134/S1061830924603404","DOIUrl":"10.1134/S1061830924603404","url":null,"abstract":"<p>Thermal barrier coatings are mainly used for thermal protection of turbine blades, and accurate non-destructive measurement of their thickness is a key factor in evaluating the integrity of blade quality. This article uses a reflective terahertz time-domain spectroscopy system to measure the thickness of thermal barrier coating samples, obtaining the refractive index of several thermal barrier ceramic coating material samples under different preparation conditions in the terahertz frequency band. Then, the reflective terahertz measurement system is used to obtain the time-domain signals of thermal barrier ceramic coating samples under different preparation conditions, extract different time-domain features, calculate the coating thickness, and compare them. The phenomenon of waveform broadening caused by dispersion during the transmission of terahertz waves in different samples was studied, and the impact of waveform broadening on the measurement of thermal barrier coating thickness was qualitatively analyzed. Compared with the results of metallographic thickness measurement, the deviation of the results is within the error range, and the comparison results show good consistency. It also provides useful reference for using terahertz technology to detect the thickness of thermal barrier coatings on turbine blades and evaluate structural quality.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"374 - 383"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162796","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":"Real-Time Control of Direct Laser Deposition Process of Inconel 718 Using Laser Emission Spectroscopy","authors":"A. A. Golyshev,&nbsp;N. A. Maslov,&nbsp;S. A. Konstantinov,&nbsp;A. G. Malikov","doi":"10.1134/S1061830924603271","DOIUrl":"10.1134/S1061830924603271","url":null,"abstract":"<p>The gas-plasma plume generated during laser selective melting of various alloys was investigated using atomic emission spectroscopy. It was demonstrated that the type of protective gas used affects the spectral characteristics. The use of helium as a process gas compared to argon reduces overall luminescence and the contributions of individual elements to the spectrum, indicating lower losses of these elements through evaporation under laser radiation exposure.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"366 - 373"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162683","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":"Analysis of the Requirements for Metrological Support of Methods and Means of Ultrasound Control","authors":"A. I. Shikhov,&nbsp;K. V. Gogolinsky,&nbsp;A. S. Zubarev,&nbsp;Ya. G. Smorodinsky,&nbsp;D. V. Kopytina,&nbsp;A. A. Vinogradova","doi":"10.1134/S1061830924603180","DOIUrl":"10.1134/S1061830924603180","url":null,"abstract":"<p>Establishing requirements for acoustic measurements and calibration blocks and monitoring their implementation during production and certification is an important task. In this paper, the parameters affecting the propagation velocity of elastic waves in steel are considered, and their contribution to the total uncertainty of measuring the propagation velocity of a longitudinal wave is determined. Based on the data obtained, an analysis of the standards devoted to ultrasonic testing methods was carried out in terms of the requirements for calibration blocks. The conducted research allowed us to establish that the requirements imposed by the current standards do not sufficiently take into account a number of factors that may affect the characteristics of ultrasound measures and reference samples. Standard samples made without taking these factors into account are unlikely to adequately assess the metrological characteristics of ultrasound equipment.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"280 - 294"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162794","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":"Attention Based U-Net Network Unified Morphological Active Contour for Accurate Defect Detection in Railways Images","authors":"Mohamed Ben Gharsallah,&nbsp;Mohamed Ben Amara","doi":"10.1134/S1061830924602228","DOIUrl":"10.1134/S1061830924602228","url":null,"abstract":"<p>Defect inspection is critical for ensuring the safe and reliable operation of railways transportation systems. This paper presents a novel defect inspection system that combines the attention U-Net network, a type of neural network architecture, and a kind of active contour algorithm based on morphological operators to improve the accuracy of defect segmentation. The attention U-Net Network is used to generate an initial segmentation mask of the railway image with attention mechanisms that enable the network to focus on the most relevant features in the image. The active contour algorithm based on morphological operators is then applied to refine the segmentation mask. The system was tested on a dataset of railway images with various defects, and the results showed that the proposed system achieved higher accuracy in defect segmentation compared to traditional segmentation methods. The proposed system has the potential to improve the efficiency and reliability of railway defect inspection, leading to safer and more reliable railway transportation.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"384 - 395"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162797","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":"Sound Field Simulation to Inspect Flat Bottom Defects in Titanium Alloy Small Diameter Bar Based on Ultrasonic Phased Array Technology","authors":"Hong-yuan Shi,&nbsp;Chi Li,&nbsp;Peng Zhou,&nbsp;Jie Li","doi":"10.1134/S1061830924603556","DOIUrl":"10.1134/S1061830924603556","url":null,"abstract":"<p>Ultrasonic non-destructive and imaging testing using the line array method is conducted on titanium alloy bars and the sound field distribution of linear array transducer probes is simulated and analyzed. The simulation of the sound field distribution of titanium alloy bars with different diameters is performed by CIVA software. CIVA is used for sensitivity and parametric studies and it can quantify the response to expected defects and can perform different inspection strategies. In this study, the different diameter bars and various defects are simulated by considering different frequencies, element sizes and numbers, and the test platform is used to verify the standard bar. Finally, the bar with natural defects is tested and a detection scheme based on the ultrasonic phased array method is proposed. By the simulation of focusing beam distribution, the distribution of the beam focus in the flat bottom holes can be analyzed, this can help the selection of focusing mode in the detection process and enhance the signal-to-noise ratio of defect detection. The test results show that utilization of the line array transducer to scan the titanium alloy bar can effectively solve the problem of defect detection in the titanium alloy bars.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"295 - 308"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162276","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":"Corrosion Degradation Assessment of Bridge Cables Using Multiply Scattered Guided Waves","authors":"Xin Chen,&nbsp;Jinsong Zhu","doi":"10.1134/S1061830925600017","DOIUrl":"10.1134/S1061830925600017","url":null,"abstract":"<p>Corrosion is one of the most common types of bridge cable damage, which can further develop into cable breakage. In this work, a novel corrosion degradation assessment method based on multiply scattered guided waves is proposed for directing the management and maintenance of bridge cables. The results reveal that simulated corrosion surfaces based on fractal theory can accurately describe steel wire surfaces with different degrees of corrosion. As the corrosion degree increases, multiple scattering echoes form multiple energy gathering points in the time–frequency domain, and the time–frequency energy of the signal gradually transfers from an end echo to multiple scattering echoes. With an increase of the total mass-loss rate, our proposed evaluation indicator rises monotonously. We show that the evaluation indicator, constructed by multiple scattering echoes, can effectively characterize the corrosion degree and is sensitive to identifying early signs of corrosion. Compared with other indicators, such as the phase velocity, the group velocity and the attenuation rate, the proposed indicators show the superior ability to characterize corrosion degradation. High-frequency guided waves have high resolution and sensitivity for characterizing degradation caused by corrosion. However, the optimal detection frequency still needs to be determined based on the attenuation of guided waves, because high-frequency guided waves attenuate more rapidly than lower-frequency waves. The interaction between wires in bridge cables has little effect on corrosion degradation assessment. With an increase of the technical grade of bridge cables, the amount of corrosion and the evaluation indicator rise gradually. The variation law of the measured evaluation indicator as a function of corrosion degree is in good agreement with our finite element analysis results, and the corrosion degradation assessment results of bridge cables using guided waves agrees well with our results based on visual inspection. Our study indicates that the corrosion degradation assessment of wires inside steel cables can be realized without damaging the outer sheath when using our assessment indicator based on the multiply scattered guided waves.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 3","pages":"309 - 330"},"PeriodicalIF":0.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162795","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}