Results 11 to 20 of about 648 (141)
Applied Sciences, 2021 Full-matrix capture (FMC)-based ultrasonic imaging provides good sensitivity to small defects in non-destructive testing and has gradually become a mainstream research topic.
Bei Yu +5 more
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Research and Review Journal of Nondestructive Testing, 2023 The total focusing method (TFM) is a post-processing imaging technique applied on full matrix capture (FMC) ultrasonic inspection (UT) dataset. In TFM the ultrasonic wave energy is synthetically focused on every pixel in the image region of interest ...
Xiangyu Lei +2 more
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Low Frequency GFRP Imaging with Variable Aperture TFM
e-Journal of Nondestructive Testing, 2023 Graphite or glass fiber reinforced polymer (GFRP) inspections are usually made with a zero-degree linear scan (L-scan) (1). Total focusing may not be applicable for some anisotropic materials, but in some cases, TFM may increase the ultrasound imaging ...
Renato Nogueira +2 more
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Ultrasonic Phased Array Sparse TFM Imaging Based on Virtual Source and Phase Coherent Weighting
IEEE Access, 2020 Total focus method (TFM) is an ultrasonic phased array imaging method and has a larger dynamic focusing range and higher spatial resolution than traditional imaging methods.
Jin Yang, Lin Luo, Kai Yang, Yu Zhang
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High-frequency Total Focusing Method (TFM) imaging in strongly attenuating materials with the decomposition of the time reversal operator associated with orthogonal coded excitations [PDF]
AIP Conference Proceedings, 2017 In the present work, the Total Focusing Method (TFM) is used to image defects in a High Density Polyethylene (HDPE) pipe. The viscoelastic attenuation of this material corrupts the images with a high electronic noise. In order to improve the image quality, the Decomposition of the Time Reversal Operator (DORT) filtering is combined with spatial Walsh ...
Villaverde, E.L., Robert, S., Prada, C.
openaire +2 more sources
Sensors, 2023 Immersion ultrasonic phased array imaging technology offers great advantages, particularly in coupling and automatic detection of industrial non-destructive testing (NDT).
Ming Chen +5 more
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Sensors, 2018 The ultrasonic phased array total focusing method (TFM) has the advantages of full-range dynamic focusing and high imaging resolution, but the problem of long imaging time limits its practically industrial applications.
Hongwei Hu +3 more
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Energies, 2022 The defects in the welds of energy pipelines have significantly influenced their safe operation. The inefficient and inaccurate detection of the defects may give rise to catastrophic accidents.
Haibin Wang +6 more
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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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Phased array probe for the inspection of large steel forgings
Cogent Engineering, 2021 Reliable inspection of large steel forgings is a significant problem across multiple industries. When the dimensions of forgings are at least 1000 mm in each direction, ultrasonic phased array inspection becomes difficult because conventional probes are ...
Frederic Dupont-Marillia +2 more
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