Combined Acoustic Emission and Digital Image Correlation for Early Detection and Measurement of Fatigue Cracks in Rails and Train Parts under Dynamic Loading

Мачихин, А. С.; Poroykov, A. Yu.; Bardakov, V. V.; Marchenkov, A. Yu.; Zhgut, D. A.; Sharikova, M. O.; Barat, V. A.; Meleshko, Natalia; Kren, A. P.

doi:10.3390/s22239256

Cited by 4 publications

(4 citation statements)

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“…27 Another research work proposed a combined approach using acoustic emission and digital image correlation for early detection and measurement of fatigue cracks in rails and train parts under dynamic loading, This approach has the potential to improve safety and reduce maintenance costs in the transportation industry as it can be applied to various structural components for detecting and monitoring fatigue cracks. 28 In this study, a pneumatic bulge test apparatus dedicated to polymeric film characterization was used to characterize PLA films under biaxial stress conditions. The bulge cell used was sufficiently large to accommodate the potential influence of film instability on the accurate determination of mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of the bulge test combined with 3D-DIC for biaxial characterization of PLA films and defect detection

Kharrat,

Khlif,

Hilliou

et al. 2023

Journal of Plastic Film & Sheeting

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The bulge test is a versatile mechanical testing technique widely applied in materials science, engineering, and biomedical research to understand the mechanical behavior of materials and structures. In this study, PLA blown films were characterized through the bulge test, and the corresponding properties were compared to those obtained from uniaxial t!esting. To achieve more accurate and precise deformation measurements, 3D digital image correlation (3D-DIC) was used, offering superior capabilities in terms of accuracy, precision, and non-destructive testing. This technique can detect defects such as cracks, voids, and delamination in materials and structures. During the bulge testing, 3D-DIC was utilized to analyze the strain field evolution within the test sample and identify regions of reduced film thickness. Notably, the results indicated zones with strain concentration aligned parallel to the film machine direction, suggesting localized thickness reduction in those areas.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of the bulge test combined with 3D-DIC for biaxial characterization of PLA films and defect detection

Kharrat,

Khlif,

Hilliou

et al. 2023

Journal of Plastic Film & Sheeting

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“…More complex systems with higher positional accuracy requirements can be used in medicine [ 7 , 8 ]. Increased requirements for measurement errors can be imposed in mechanical testing of parts and materials [ 9 , 10 , 11 ]. The widespread use of smartphones and the rapid development of digital video cameras have led to the development of specific methods for applying them to photogrammetry tasks [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

An Error Estimation System for Close-Range Photogrammetric Systems and Algorithms

Poroykov,

Pechinskaya,

Shmatko

et al. 2023

Sensors

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Close-range photogrammetry methods are widely used for non-contact and accurate measurements of surface shapes. These methods are based on calculating the three-dimensional coordinates of an object from two-dimensional images using special digital processing algorithms. Due to the relatively complex measurement principle, the accurate estimation of the photogrammetric measurement error is a non-trivial task. Typically, theoretical estimations or computer modelling are used to solve this problem. However, these approaches cannot provide an accurate estimate because it is impossible to consider all factors that influence the measurement results. To solve this problem, we propose the use of physical modelling. The measurement results from the photogrammetric system under test were compared with the results of a more accurate reference measurement method. This comparison allowed the error to be estimated under controlled conditions. The test object was a flexible surface whose shape could vary smoothly over a wide range. The estimation of the measurement accuracy for a large number of different surface shapes allows us to obtain new results that are difficult to obtain using standard approaches. To implement the proposed approach, a laboratory system for the error estimation of close-range photogrammetric measurements was developed. The paper contains a detailed description of the developed system and the proposed technique for a comparison of the measurement results. The error in the reference method, which was chosen to be phasogrammetry, was evaluated experimentally. Experimental testing of the stereo photogrammetric system was performed according to the proposed technique. The obtained results show that the proposed technique can reveal dependencies that may not be detected by standard approaches.

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“…Moreover, fiber optic strain sensors, especially, fiber Bragg grating (FBG) sensors, have been successively applied to bridges, reinforced concrete and composite structures [ 4 , 5 , 6 ]. The digital image correlation (DIC) method has been widely used as a powerful and practical tool for surface deformation measurement and directly provides full-filed displacements and strains by comparing the captured images before and after deformation [ 7 , 8 , 9 , 10 ]. Nevertheless, the DIC technology depends heavily on the quality of the images, and its accuracy is lower than that of interferometric metrology.…”

Section: Introductionmentioning

confidence: 99%

Micro-Image Strain Sensing Method for Displacement and Strain Measurement in One United Sensor

Zhang

Chen

et al. 2022

Sensors

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Micro-image strain sensing (MISS) is an innovative technology to measure strain within a measurement range of ±8300 microstrains. It has been proved to be effective and satisfy all requirements in the field of structural health monitoring. However, there is still room for improvement and extend the range of measurement. In this paper, an improved method is proposed to increase the measurement range of strain and displacement. Moreover, various tests were conducted to verify the efficiency of the improved method. The results showed that the modified method is efficient and accurate and can be readily used to extend the measurement range of both strain and displacement. This research will likely help stimulate the development of multifunctional sensors to obtain abundant useful information about structures in the field of structural health monitoring. It will allow measuring strain and displacement, which require different levels of accuracy, using one unified sensor.

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Combined Acoustic Emission and Digital Image Correlation for Early Detection and Measurement of Fatigue Cracks in Rails and Train Parts under Dynamic Loading

Cited by 4 publications

References 43 publications

Application of the bulge test combined with 3D-DIC for biaxial characterization of PLA films and defect detection

Application of the bulge test combined with 3D-DIC for biaxial characterization of PLA films and defect detection

An Error Estimation System for Close-Range Photogrammetric Systems and Algorithms

Micro-Image Strain Sensing Method for Displacement and Strain Measurement in One United Sensor

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