Ndt & E International最新文献

{"title":"Coherent and incoherent Rayleigh wave attenuation for discriminating microstructural effects of thermal damage from moisture conditions in concrete","authors":"Massina Fengal ,&nbsp;Pierric Mora ,&nbsp;Parisa Shokouhi ,&nbsp;Olivier Durand ,&nbsp;Xavier Dérobert ,&nbsp;Sérgio Palma-Lopes ,&nbsp;Maximilien Lehujeur ,&nbsp;Géraldine Villain ,&nbsp;Eric Gennesseaux ,&nbsp;Odile Abraham","doi":"10.1016/j.ndteint.2025.103473","DOIUrl":"10.1016/j.ndteint.2025.103473","url":null,"abstract":"<div><div>Thermal damage results in a depth-dependent variation in concrete mechanical properties, which is commonly investigated by invasive sampling and destructive testing. Ultrasonic Rayleigh wave (R-wave) testing offers a non-destructive alternative for mapping mild to moderate thermal damage in cementitious materials. However, the coupled influence of damage and moisture gradients on the ultrasonic measurements is not known, while it is known that rehydration causes partial recovery of mechanical properties. In this study, we prepare concrete and mortar blocks subjected to two distinct heating scenarios: a short-duration high-temperature exposure following the ISO fire standards, and a lower-intensity longer heating using radiant panels. We then use P-wave refraction, R-wave phase velocity and attenuation and diffuse field analysis to test the exposed blocks first at ambient conditions and later after water saturation, in order to decouple the influence of water saturation from that of thermal damage. The ultrasonic results are interpreted in relation to other non-destructive measurements: resistivity and capacitance. We find that although R-wave phase velocity is indeed sensitive to thermal damage, it is also significantly affected by the effect of moisture as it can hardly distinguish between exposed and intact surfaces after post-fire re-curing. In contrast, coherent R-wave attenuation effectively discriminates a damaged surface. The distinct analysis of coherent and incoherent attenuation enables to separate the impacts of thermal damage and moisture content. Overall, this article highlights the potential of attenuation for assessing damage under unknown moisture conditions.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103473"},"PeriodicalIF":4.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detecting of interfacial defects in CFRP−concrete bonded joints using dynamic speckle patterns of excited surface","authors":"Leonid Muravsky,&nbsp;Zinoviy Nazarchuk,&nbsp;Oleksandr Kuts,&nbsp;Yaroslav Ivanytskyi,&nbsp;Oleksiy Sharabura","doi":"10.1016/j.ndteint.2025.103480","DOIUrl":"10.1016/j.ndteint.2025.103480","url":null,"abstract":"<div><div>An optical-acoustic method (OAM) for identification of interfacial defects in carbon fibre reinforced polymer (CFRP)−concrete bonded joints is proposed. To detect and identify defects by this method, the unidirectional CFRP plate is excited by a harmonic elastic waves, and a series of dynamic speckle patterns (DNSPs) of the plate surface is produced by an imaging system. The local area of the plate directly above the interfacial defect, i.e. a region of interest (ROI), is considered as a circular membrane that oscillates at its fundamental resonance frequency under the action of an elastic wave. An optical-acoustic system (OAS) mock-up implementing this method, after generating and registering the DNSPs sequences allows forming an optical spatial response from the ROI and determining its dimensions, close to dimensions of a detected interfacial defect. To verify the proposed OAM, series of artificial circular disbonds in CFRP-concrete bonded joints were produced and optical spatial responses at the fundamental resonance frequency of each defect were obtained using the developed OAS mock-up. It is shown that obtained experimental dependency of the fundamental resonance frequency on the artificial defect radius is close to the same theoretical dependence plotted on the basis of the Rayleigh quotient frequency.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103480"},"PeriodicalIF":4.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144548479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of thermal damage in variable-thickness poly-methyl methacrylate plates using non-specular reflection of bounded ultrasonic beams","authors":"Jiangcheng Cai,&nbsp;Mingxi Deng","doi":"10.1016/j.ndteint.2025.103479","DOIUrl":"10.1016/j.ndteint.2025.103479","url":null,"abstract":"<div><div>This paper introduces a novel approach for assessing thermal damage in variable-thickness poly-methyl methacrylate (PMMA) plates through the analysis of non-specular reflection phenomena under critical incidence conditions. The theoretical framework begins with the derivation of the interaction mechanism between a finite-width plane wave and a variable-thickness plate under liquid-solid coupling conditions, followed by a comprehensive analysis of the reflection-to-incident energy ratio with respect to the incident angle. The investigation identifies three distinct critical incident angles corresponding to quasi-S2, quasi-S1, and quasi-A1 guided wave modes. Finite element simulations were conducted to examine the non-specular reflection characteristics of bounded ultrasonic beams. The simulations showed that, at specific critical incident angles, the scattered acoustic fields at the specular receiver exhibit exceptional sensitivity for detecting damage states in variable-thickness PMMA plates. Experimental verification substantiates the efficacy of this non-specular reflection approach for assessing the thermal aging state of variable-thickness PMMA plates. The results indicate that the proposed non-specular detection technique offers superior performance in early-stage thermal damage identification and maintains an enhanced signal-to-noise ratio, thereby demonstrating significant practical applicability.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103479"},"PeriodicalIF":4.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating AI in NDE: Techniques, trends, and further directions","authors":"Eduardo Pérez ,&nbsp;Cemil Emre Ardıç ,&nbsp;Ozan Çakıroğlu ,&nbsp;Kevin Jacob ,&nbsp;Sayako Kodera ,&nbsp;Luca Pompa ,&nbsp;Mohamad Rachid ,&nbsp;Han Wang ,&nbsp;Yiming Zhou ,&nbsp;Cyril Zimmer ,&nbsp;Florian Römer ,&nbsp;Ahmad Osman","doi":"10.1016/j.ndteint.2025.103442","DOIUrl":"10.1016/j.ndteint.2025.103442","url":null,"abstract":"<div><div>The digital transformation is fundamentally changing our industries, affecting planning, execution as well as monitoring of production processes in a wide range of application fields. With product line-ups becoming more and more versatile and diverse, the necessary inspection and monitoring sparks significant novel requirements on the corresponding Nondestructive Evaluation (NDE) systems. The establishment of increasingly powerful approaches to incorporate Artificial Intelligence (AI) may provide just the needed innovation to solve some of these challenges.</div><div>In this paper we provide a comprehensive survey about the usage of AI methods in NDE in light of the recent innovations towards NDE 4.0. Since we cannot discuss each NDE modality in one paper, we limit our attention to magnetic methods, ultrasound, thermography, as well as optical inspection. In addition to reviewing recent AI developments in each field, we draw common connections by pointing out NDE-related tasks that have a common underlying mathematical problem and categorizing the state of the art according to the corresponding sub-tasks. In so doing, interdisciplinary connections are drawn that provide a more complete overall picture.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103442"},"PeriodicalIF":4.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coded excitation strategies to ensure the validity of ultrasound controlled tightening of bolted joints","authors":"Marius W. Schäfer ,&nbsp;Michael M. Becker ,&nbsp;Sarah C.L. Fischer","doi":"10.1016/j.ndteint.2025.103467","DOIUrl":"10.1016/j.ndteint.2025.103467","url":null,"abstract":"<div><div>Ultrasonic time-of-flight measurement is a well-established technique for accurately determining stress in materials. However, this method can be fragile and lacks robustness to interference in demanding applications such as process control for bolt and screw assembly. Depending on the test object, material, external influence, geometry, or other disturbances, the evaluation results in an incorrect preload and the process control fails. This paper describes several coded excitation approaches to ensure the validity of signals for ultrasound-guided tightening of bolted joints. The methods presented range from the use of a binary coded sequence (pure frequency modulation) for excitation, to inverse calculation (combination of amplitude and frequency modulation), to On–Off keying (pure amplitude modulation). The different approaches and the state-of-the-art sinusoidal excitation are evaluated in terms of side lobe distance and noise immunity by reducing the excitation voltage. We show that Coded stimulation allows excitation of ultrasonic echoes with high side lobe distance in their correlation function, even during the tightening process and based on challenging screws. The methods vary in technological complexity, computational effort and stability which need to be optimized according to the use case for translation to application.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103467"},"PeriodicalIF":4.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detecting water leaks in underground pipelines by radar and dielectric analysis","authors":"Benhui Fan ,&nbsp;Ao Wang ,&nbsp;Jean-Marie Fleureau ,&nbsp;Bruno Beaucamp ,&nbsp;Vincent Guilbert ,&nbsp;Cyril Ledun ,&nbsp;Alain Sylvestre ,&nbsp;Cyrille Fauchard","doi":"10.1016/j.ndteint.2025.103477","DOIUrl":"10.1016/j.ndteint.2025.103477","url":null,"abstract":"<div><div>Water leaks in underground pipelines not only lead to economic losses from wasted water but can also cause structural damage to urban infrastructure. In this study, we present a non-destructive radar-based detection for locating water leaks beneath the soil at various scales. First, as the radar detection relies on the dielectric contrast of soils with different saturation degrees, it is important to understand how the presence of water affects the dielectric permittivity and conductivity of unsaturated soils. To investigate this, the dielectric properties of three soil types: sand, loam, and a sand-loam-aggregate mixture, were analyzed by an open-ended probe to establish the relationship between the water saturation and the soil dielectric permittivity. Second, a stepped frequency radar (SFR) was employed in a controlled laboratory setting to monitor signal changes caused by water leaks in the three soil types. Finally, field tests were conducted at a site (8 × 5 m²), where a ground-penetrating radar (GPR) was used to locate leaks in two plastic pipelines buried over 1 m deep, with varying leak speeds. Based on these multi-scale experimental results, we aim to demonstrate the potential application of radar-based measurement for water leak detection. Additionally, we discuss the signal variations caused by wet soils, soil deformation, and the accuracy of detection in different scenarios.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103477"},"PeriodicalIF":4.1,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dispersion curve calculation for SH0-like guided wave locally propagating at the switch rail foot based on wave finite element method","authors":"Songtao Hu ,&nbsp;Guofu Zhai ,&nbsp;Zhichao Li ,&nbsp;Chao Lu","doi":"10.1016/j.ndteint.2025.103474","DOIUrl":"10.1016/j.ndteint.2025.103474","url":null,"abstract":"<div><div>The switch rail is the most critical facility in the railway system for changing the direction of trains. The rail flaw detection car is difficult to detect the switch rail foot, which poses a hidden danger to the safe operation of the railway system. The SH0-like guided wave mainly with horizontal vibration is less affected by the elastic rail fastenings, which has a great potential for switch rail foot inspection. However, unlike the SH0 guided wave in flat plate, the vibration of the SH0-like guided wave in switch rail foot is more complicated. In this paper, the accurate dispersion curve calculation method for the SH0-like guided wave in the switch rail foot is proposed. Through the time domain simulation, the displacement characteristics of the SH0-like guided wave are analyzed by bending motion theory. By applying displacement constraints and fixed constraints to the local model of the switch rail foot, the accurate dispersion curve of SH0-like guided wave is solved using wave finite element method. The two-dimensional Fourier transform (2DFFT) is used for simulation and experimental verification, and the results of the 2DFFT are consistent with the dispersion curve. Defect localization by using SH0-like guided wave in switch rail foot is studied experimentally. Compared with the defect location using the group velocity of SH0 guided wave, the relative error of defect location using SH0-like guided wave group velocity is reduced by more than 8.1 %.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103474"},"PeriodicalIF":4.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MOEA/D-UR based infrared feature extraction for hypervelocity impact spacecraft damage detection and assessment","authors":"Yan Gao ,&nbsp;Chun Yin ,&nbsp;Xuegang Huang ,&nbsp;Jiuwen Cao ,&nbsp;Sara Dadras ,&nbsp;Zhiqi Hou ,&nbsp;Anhua Shi","doi":"10.1016/j.ndteint.2025.103464","DOIUrl":"10.1016/j.ndteint.2025.103464","url":null,"abstract":"<div><div>In this paper, a decomposition-based multi-objective evolutionary algorithm updating weights when required (MOEA/D-UR) infrared feature extraction method is proposed for damage detection. Due to the complexity of the damage caused by hypervelocity impact (HVI), it is difficult to visually characterize the coupling defects in pulse thermography in reflection mode. After obtaining a multi-objective optimization problem, an adaptive metric was utilized to determine when to adjust the weights and divide the objective space. On the actual infrared data, we introduce the sample distribution objective, the data structure objective, and the local pixel relationship objective, based on which we establish a multi-objective optimization problem. The experimental results show that the detection framework is able to detect different HVI damages and realize visual evaluation. The proposed method can effectively classify point impact and surface impact damage caused by HVI. The method successfully identified 17 optimal Pareto solutions from 250 selected TTRs, using a block of 327,680 pixels. The detection framework demonstrates robust performance in practical infrared applications, precisely discriminating HVI-induced defective regions.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103464"},"PeriodicalIF":4.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reconstruction of compressed nonlinear ultrasonic signal for self-healing process of asphalt mixture based on physics-informed neural network","authors":"Long Li ,&nbsp;Wentao Zhang","doi":"10.1016/j.ndteint.2025.103475","DOIUrl":"10.1016/j.ndteint.2025.103475","url":null,"abstract":"<div><div>The vast quantity of data generated by ultrasonic monitoring poses challenges for efficient information transfer and significantly prolongs processing times, particularly when data must be exchanged between cloud servers and local endpoints. This situation is in stark contrast to the ongoing drive of the industry towards energy-efficient manufacturing equipment. Data compression, a standard approach for addressing this, is heavily reliant on the quality of the acquired signals, especially when it comes to nonlinear ultrasonic methods, which are sensitive to the characteristics of higher harmonics. Consequently, achieving high-fidelity signal reconstruction from compressed data is a critical challenge. This paper introduces a convolutional autoencoder physics-informed neural network (CAE-PINN) that includes a general loss term along with two terms incorporating physical information. The results demonstrate that this neural network model, which incorporates physical insights, consistently surpasses traditional signal reconstruction techniques in terms of lower reconstruction error and higher signal-to-noise ratio. Moreover, the model trained with numerical simulation datasets effectively guides the reconstruction of experimental signals. CAE-PINN also exhibits robust performance in dealing with noisy signals. Error analysis of nonlinear parameters and ablation experiment reveal that the CAE-PINN is capable of extracting intrinsic physical information from signals, allowing for the accurate recovery of true nonlinear parameters, a feat that surpasses purely data-driven approaches. With this capability, it can be confidently asserted that the CAE-PINN provides an accurate characterization of the self-healing process in asphalt mixture, even under high compression ratios. For further information on the development and replication of the CAE-PINN model, including access to the numerical simulation models and remote-control program code, please refer to the following resources.</div><div><span><span>https://github.com/Dalongna/Signal_reconstruction</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103475"},"PeriodicalIF":4.1,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced image contrast in laboratory X-ray computed tomography for additive manufacturing by optimizing voltage based on transmission","authors":"Jiasheng Liu ,&nbsp;Xu Qiao ,&nbsp;Ke Gong ,&nbsp;Fanqiang Meng ,&nbsp;Chenggong Zhang ,&nbsp;Zhou Zhou","doi":"10.1016/j.ndteint.2025.103462","DOIUrl":"10.1016/j.ndteint.2025.103462","url":null,"abstract":"<div><div>Laboratory X-ray computed tomography (XCT) becomes widely used in the field of additive manufacturing (AM) for defects inspection. However, the voltage of X-ray source, which determines the X-ray transmission through a certain sample, used in XCT experiments is significantly discrepant. The effects on the quality of resulting images have not been studied and discussed in AM field. In this work, the theoretical transmissions of monochromatic and polychromatic X-rays for various SLM-prepared samples were calculated and successfully validated by both synchrotron and laboratory XCT experimentally. The laboratory XCT images obtained with various voltages were evaluated in detail, and the optimal contrast was achieved when the transmission difference between the materials with and without pores was maximum. Thus, this study proposed a transmission-based method to improve image contrast by optimizing the voltage setting in laboratory XCT.</div></div>","PeriodicalId":18868,"journal":{"name":"Ndt & E International","volume":"156 ","pages":"Article 103462"},"PeriodicalIF":4.1,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}