Results 31 to 40 of about 643,132 (282)
Sensors, 2019 Ultrasonic arrays have been investigated for inspecting the quality of special materials. Unfortunately, non-destructive testing and evaluation (NDT&E) of internal defects in additive manufacturing (AM) materials are difficult due to the anisotropy ...
Wentao Li, Zhenggan Zhou, Yang Li
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Applied Sciences, 2021 The quality of ultrasound images of welds is highly penalized by the dendritic structure of the material that forms during cooling. The image of a flaw is all the more degraded as a reliable description of such a medium is most of the time not possible ...
Corentin Menard +2 more
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Applications of Flexible Ultrasonic Transducer Array for Defect Detection at 150 °C
Sensors, 2013 In this study, the feasibility of using a one dimensional 16-element flexible ultrasonic transducer (FUT) array for nondestructive testing at 150 °C is demonstrated.
Jiunn-Woei Liaw +5 more
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Sensors, 2021 There has been an increase in the use of ultrasonic arrays for the detection of defects in composite structures used in the aerospace industry. The response of a defect embedded in such a medium is influenced by the inherent anisotropy of the bounding ...
Chirag Anand +2 more
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Total Focusing Method (TFM) and Phase Coherence Imaging (PCI) applied to various industrial cases
e-Journal of Nondestructive Testing, 2023 Les techniques d’imageries ultrasonores basées sur la Total Focusing Method (TFM) sont de plus en plus utilisées dans les applications industrielles.
Frederic Reverdy +2 more
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Sensors, 2022 The demand for cost-efficient manufacturing of complex metal components has driven research for metal Additive Manufacturing (AM) such as Wire + Arc Additive Manufacturing (WAAM).
Rastislav Zimermann +14 more
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Research on defect quantification technique of Sparse array Total focusing method imaging based on Coherence factor weighting [PDF]
EPJ Web of ConferencesAdditive manufacturing technology is widely used in key components in the aerospace field due to its high manufacturing freedom and high precision. However, in the process of internal quality inspection of products, the signal attenuation caused by ...
Da Kang +6 more
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Defect detection using ultrasonic arrays: The multi-mode total focusing method [PDF]
, 2010 Ultrasonic arrays allow a given scatterer to be illuminated from a wide range of angles and hence are capable of extracting significant information about the scatterer. In this paper a general imaging methodology, termed multi-mode total focusing method,
Wilcox, PD +3 more
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A receiver-optimized total focusing method for detectability enhancement of small defects in coarse grained materials [PDF]
, 2023 The identification and localization of small defects are among the main objectives of ultrasonic non-destructive testing (NDT). In particular, the inspection of polycrystalline materials remains a challenge due to ultrasonic attenuation and backscatter ...
Jianfeng Xu +9 more
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Sensors, 2020 Ultrasonic array imaging algorithms have been widely developed and used for non-destructive evaluation (NDE) in the last two decades. In this paper two widely used time domain algorithms are compared with two emerging frequency domain algorithms in terms
Zeyu Zhuang +3 more
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