Russian Journal of Nondestructive Testing最新文献_第10页

Quantitative Detection of Rail Head Oblique Cracks by Laser Ultrasonic Surface Wave 利用激光超声表面波定量检测轨头斜裂纹

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2024-01-12 DOI: 10.1134/S1061830923600740

Yi Jiang, Rongyao Wang, Lei Han, Zhaoxin Wang

引用次数: 0

X-ray CT Metal Artifact Reduction Using Segmentation and TV Regularisation 利用分割和电视正则化减少 X 射线 CT 金属伪影

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2024-01-12 DOI: 10.1134/S1061830923600636

A. Allag, A. Benammar, T. Benmerar, W. Djerir, R. Drai, T. Boutkedjirt

引用次数: 0

Automated Crack Detection and a Web Tool Using Image Processing Techniques in Concrete Structures 利用图像处理技术自动探测混凝土结构裂缝并开发网络工具

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2024-01-12 DOI: 10.1134/S1061830923600569

Chandan Kumar, Ajay Kumar Sinha

{"title":"Automated Crack Detection and a Web Tool Using Image Processing Techniques in Concrete Structures","authors":"Chandan Kumar, Ajay Kumar Sinha","doi":"10.1134/S1061830923600569","DOIUrl":"10.1134/S1061830923600569","url":null,"abstract":"Cracks indicates the real time deformity in concrete structures. It is characterized as discontinuity in terms of shape and size of the concrete structures. To ensure the structural health and safety, crack detection is an important task. The traditional methods of crack detection include visual introspection, ultrasonic and hand-held testing of crack. These methods require a high human intervention along with an experienced and skilled inspector. Moreover, these methods are subjective and time-consuming process which fails to identify the crack of the complex concrete structures properly. To overcome these issues, a GrabCut with improved Sobel has been proposed for automatic crack detection from the concrete structures. The proposed method works as a two-step model where cracks regions are segmented in the first step and a precise crack assessment is performed in the second step. Furthermore, to improve the efficacy of Sobel, the mask is modified with the aid of local variance of the image instead of using conventional mask of the filter. For the experimentation study, the images of self-prepared concrete sample have been acquired. The effectiveness of the proposed method has been compared with respect to various pre-existing methods like Sobel, Prewitt, Robert, LoG, Zero Cross, and Canny. The comparative qualitative result exhibits that the proposed method surpasses the outcomes of the other pre-existing methods. Additionally, for easy implementation and application point of view a web tool of the proposed method has been developed. The web tool can be utilised by the civil infrastructure maintenance agency and construction engineers in the task of structure maintenance.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460240","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}

引用次数: 0

Electrochemical Realkalisation of Carbonated Cementitious Matrix: Characterization Research to Influence of Time and Current Density 碳化水泥基质的电化学再钙化：时间和电流密度影响下的特性研究

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923600570

Ana Carolina Rachadel, Wellington Mazer

{"title":"Electrochemical Realkalisation of Carbonated Cementitious Matrix: Characterization Research to Influence of Time and Current Density","authors":"Ana Carolina Rachadel, Wellington Mazer","doi":"10.1134/S1061830923600570","DOIUrl":"10.1134/S1061830923600570","url":null,"abstract":"The depassivation of reinforcement caused by the reduction of concrete alkalinity due to the concrete carbonation process can induce the appearance of steel corrosion. The restoration of alkalinity can be done by chemical realkalinization (CRA) or electrochemical realkalinization (ERA) methods. In this context, the present work aims to evaluate the influence of the application time and the current density used in the electrochemical realkalinization process. For the development of the research, mortar samples were molded with a reinforced bar for electrical connection and remained for 24 months in a carbonation chamber. After this period, the carbonation depth that occurred was verified and then the specimens were submitted to the electrochemical realkalinization process using 3 different current values, 0.5, 1.0, and 1.5 A/m2 and remained at different periods (7, 14, and 21 days) in the recovery process. Additional tests of absorption, compressive strength, carbonation depth measurements, mercury intrusion porosimetry (MIP) and thermogravimetric analysis (TGA) were also carried out on reference, carbonated and realkalinized specimens. Based on the results of the tests, it was observed that the recovery process starts after 7 days with the lowest current density used. A better current density x application time ratio was also observed considering the results of the mercury intrusion porosimetry and thermogravimetric analysis tests in conjunction with the realkalinization process.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689205","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}

引用次数: 0

Theoretical Studies of Temperature Compensation of Results of Diagnostics of Polymer Composites Using the Method of Two Optical Fibers 使用双光纤法对聚合物复合材料诊断结果进行温度补偿的理论研究

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923700560

M. Yu. Fedotov

{"title":"Theoretical Studies of Temperature Compensation of Results of Diagnostics of Polymer Composites Using the Method of Two Optical Fibers","authors":"M. Yu. Fedotov","doi":"10.1134/S1061830923700560","DOIUrl":"10.1134/S1061830923700560","url":null,"abstract":"The paper considers the advantages and disadvantages of existing methods for temperature compensation of data from fiber-optic sensors based on fiber Bragg gratings as part of an embedded system for simultaneous testing of deformation and temperature of polymer composite materials. It is shown that when external temperature testing is impossible, it is most expedient to implement the method of two optical fibers with different sensitivity to at least one of these parameters due to different dopants. Technological issues related to the formation of a spatial topology and the provision of an effective survey of the embedded optical system for monitoring polymer composite materials by the two-fiber method are considered. The results of theoretical research of a linear model of temperature compensation, a model that takes into account the influence of cross sensitivity, as well as a quadratic model of temperature compensation of optical testing data are presented. It has been established that the linear model is the simplest, however, when using it, one should take into account the error associated with the inaccuracy of the approximation of optical inspection data by a linear function. At the same time, it is shown that in order to improve the quality and reliability of the results of optical testing, it is advisable to use a quadratic model of temperature compensation, which provides an error level comparable to the error of the fiber-optic sensor survey device. The results obtained can be used to develop methods for the simultaneous testing of samples, as well as monolithic and three-layer structures from structural layered polymer composite materials with limiting molding conditions (temperature less than 180°C, specific pressure lower than 0.7 MPa), as in the process of bench and other tests, and, in the future, in real operating conditions.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689051","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}

引用次数: 0

Parameter Estimation for Ultrasonics Echoes Using an Weighted Mean of Vectors Optimizer 使用向量加权平均值优化器估算超声回波参数

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923600727

F. Chibane, A. Benammar, R. Drai, H. Meglouli

{"title":"Parameter Estimation for Ultrasonics Echoes Using an Weighted Mean of Vectors Optimizer","authors":"F. Chibane, A. Benammar, R. Drai, H. Meglouli","doi":"10.1134/S1061830923600727","DOIUrl":"10.1134/S1061830923600727","url":null,"abstract":"Accurate estimations of the parameters of the ultrasonic echo pattern are essential in ultrasonic nondestructive testing. The estimation of this parameters allow characterization and defect detection in the materials. However, estimations the parameters of multi-echo ultrasonic signals is a challenging task in the cases of closely spaced echoes and/or drowned in noise. Therefore, this paper proposes a potent integrated algorithm for estimating parameters of multi-echo ultrasonic signals using an optimizer called “weighted mean of vectors” (INFO) and the principle of minimum description length (MDL). The INFO algorithm is an optimizer that uses the concept of weighted average to move agents to a better position. It modified the weighted average method by using three central processes, namely the update rule, vector combination, and the local search. The principle of MDL is used to determine the number of echoes, i.e., the order of the model. A simulation study has been carried out simulating a signal containing three echoes that overlap in time with several levels of noise. Additionally, experimental tests were performed on three steel samples, each containing two adjacent holes drilled in the back wall face. Both experimental and simulated results show that the proposed method can accurately estimate the parameters of closely spaced echoes.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689072","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}

引用次数: 0

Investigating the Effect of High Voltage Electric Field on the Pesticide Residue in Tomatoes Using the Thermal Imaging Technique 利用热成像技术研究高压电场对番茄中农药残留的影响

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923600521

Mohammad-Hosein Shojaei, Kazem Jafarinaeimi, Hamid Mortezapour, Mohammad-Mehdi Maharlooei, Mahdiye Asadi

{"title":"Investigating the Effect of High Voltage Electric Field on the Pesticide Residue in Tomatoes Using the Thermal Imaging Technique","authors":"Mohammad-Hosein Shojaei, Kazem Jafarinaeimi, Hamid Mortezapour, Mohammad-Mehdi Maharlooei, Mahdiye Asadi","doi":"10.1134/S1061830923600521","DOIUrl":"10.1134/S1061830923600521","url":null,"abstract":"Providing healthy food for the growing population is one of the most important issues in every country. Pests are one of the main damaging sources of agricultural products. Applying chemical pesticides is a common method employed by growers to address this issue. However, chemical residue not only remains on crops but can also penetrate fruits, vegetables, and even grains. This study aimed to investigate the effect of magnitude and elapsed time of high-voltage electric field (HVEF) application on the reduction of Malathion pesticide residue tissues. Additionally, the possibility of employing thermal imagery to monitor the residual traces of pesticide was evaluated. The effect of the HVEF at four voltage levels, four elapsed periods, and four biological layers of tomato was investigated on the amount of the pesticide residue. In addition to using the thermal imaginary method, the Fourier Transform Infrared spectroscopy (FTIR) method was also used to investigate the reduction of pesticide residues. The results showed that the HVEF significantly reduced the pesticide residue in the 4 kV treatment after 24 h from the time of applying the HVEF. The results of the analysis of FTIR charts and the images obtained from the thermal imaging method showed that the pesticide residue in the product was reduced, and the thermal imaging method can be employed as a low-cost, fast, and reliable method for monitoring the pesticide residue be used. The highest temperature difference between high-voltage treated samples and reference samples in a controlled chamber was 2.1°C at the voltage of 4 kV. By using an HVEF, it is possible to reduce the pesticide residue in tomatoes. The general results show that at a voltage of 4 kV, and 24 h after applying HVEF to the contaminated tomato samples, the maximum amount of pesticide residue has decreased.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689383","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}

引用次数: 0

Barker Code Thermography Inspection and Reliability Evaluation for CFRP Defects Detection 用于 CFRP 缺陷检测的巴克准则热成像检测和可靠性评估

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923600545

Chiwu Bu, Tao Liu, Bo Zhao, Rui Li

引用次数: 0

Ultrasound Tomography Based on the Inverse Coefficient Problem as a Way to Combat Pattern Noise 基于反系数问题的超声断层扫描是解决模式噪声的一种方法

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923700547

E. G. Bazulin, A. V. Goncharsky, S. Yu. Romanov, S. Yu. Seryozhnikov

{"title":"Ultrasound Tomography Based on the Inverse Coefficient Problem as a Way to Combat Pattern Noise","authors":"E. G. Bazulin, A. V. Goncharsky, S. Yu. Romanov, S. Yu. Seryozhnikov","doi":"10.1134/S1061830923700547","DOIUrl":"10.1134/S1061830923700547","url":null,"abstract":"The paper proposes to use the ultrasound tomography method based on the solution of the inverse coefficient problem to reduce the level of pattern noise. Mathematical models used in ultrasound tomography well describe such physical effects as refraction, diffraction, and rescattering. It is logical to expect that reconstruction of the internal structure of metallic samples using ultrasound tomography is more efficient compared to digital antenna focusing (DFA) techniques. Due to the nonlinearity of the inverse problem of ultrasound tomography, an iterative MultiStage method is used to ensure convergence to the global minima of the residual functional. The paper presents the results of numerical experiments to reconstruct the image of the internal structure of a welded joint that may contain side drilled holes and crack models. A domain of welded metal is represented in the form of sections constructed according to the principle of Voronoi diagrams. In each section, the velocity is constant and its value is randomly distributed. In the model adopted in the paper, the pattern noise is formed due to multiple scattering at the boundaries of sections with different sound velocities. It was assumed that the antenna array is located on the outer surface of the test object of known thickness. The obtained results show that the tomographic method allows one to determine the shape and speed of sound in low-contrast reflectors, for which the DFA method is ineffective.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689076","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}

引用次数: 0

Nondestructive Testing of Local Microcracking in Laboratory Mineral Samples Using an Acoustic Method with a Laser Source of Ultrasound and Its Verification with X-ray Computed Tomography 使用带激光超声源的声学方法对实验室矿物样品的局部微裂纹进行无损检测，并通过 X 射线计算机断层扫描进行验证

IF 0.9 4区材料科学

Russian Journal of Nondestructive Testing Pub Date : 2023-12-15 DOI: 10.1134/S1061830923600697

N. B. Podymova, A. B. Ermolinskii, M. S. Chernov

{"title":"Nondestructive Testing of Local Microcracking in Laboratory Mineral Samples Using an Acoustic Method with a Laser Source of Ultrasound and Its Verification with X-ray Computed Tomography","authors":"N. B. Podymova, A. B. Ermolinskii, M. S. Chernov","doi":"10.1134/S1061830923600697","DOIUrl":"10.1134/S1061830923600697","url":null,"abstract":"An acoustic technique for nondestructive testing of the degree of local microcracking in laboratory mineral samples based on laser generation of ultrasound is proposed. The spectral power of broadband signals of longitudinal ultrasonic waves is measured. The waves were generated by absorption of pulsed laser radiation in a special material that served as a laser source of ultrasound and further scattered by microcracks in samples (the so-called structural noise power). For two types of feldspars with a nonuniform volumetric distribution of microcracks, a direct relationship was obtained between an increase in microcracks and an increase in the power of structural noise in the sounded sections of the samples. For the first time, an independent method of X-ray computed tomography of complex-shaped samples confirmed the reliability of the results of acoustic measurements. The established relationship between the local microcracking and structural noise power can be used in the monitoring systems for observing the crack formation in rocks and minerals under various external loadings.","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689125","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}

引用次数: 0