Suppressing artifacts in the total focusing method using the directivity of laser ultrasound [PDF]
Photoacoustics, 2023 Based on a synthesized laser ultrasonic array, full matrix capture can be used to acquire data, which can then be post-processed using the total focusing method.
Huabin He +5 more
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Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure [PDF]
Applied Sciences, 2021 An ultrasonic array device like the A1040 MIRA is used to non-destructively visualize the inside of concrete structures. A data set acquired by the ultrasonic array device is so unfocused that an image reconstruction algorithm is required to transform ...
Hungjoo Kwon +2 more
doaj +5 more sources
Single-Crystal Inspection Using an Adapted Total Focusing Method [PDF]
SensorsSingle-crystal superalloys have attracted considerable interest in aero engine blade manufacture due to their superior mechanical properties, which maintain structural integrity at high temperatures.
Iratxe Aizpurua-Maestre +4 more
doaj +3 more sources
Automated Classification of Pipeline Defects from Ultrasonic Phased Array Total Focusing Method Imaging [PDF]
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
doaj +3 more sources
Total Focusing Method (TFM) and Phase Coherence Imaging (PCI) applied to various industrial cases [PDF]
e-Journal of Nondestructive Testing, 2023 Imaging techniques based on ultrasonic Total Focusing Method (TFM1) are more and more applied for industrial applications. Adoption of the technique has been made easier with the publication of the revised ASME V and ISO 23864 and 23865 standards.
Frederic Reverdy, Paul Hillman, Guy Maes
doaj +5 more sources
Optimal Design of Sparse Matrix Phased Array Using Simulated Annealing for Volumetric Ultrasonic Imaging with Total Focusing Method [PDF]
SensorsThe total focusing method (TFM) is often considered to be the ‘gold standard’ for ultrasonic imaging in the field of nondestructive testing. The use of matrix phased arrays as probes allows for high-resolution volumetric TFM imaging.
Dmitry Olegovich Dolmatov +1 more
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Optimal Design of Sparse Array for Ultrasonic Total Focusing Method by Binary Particle Swarm Optimization [PDF]
IEEE Access, 2020 Ultrasonic phased array technology is used in various fields. Traditional full phased arrays place elements in every position of a uniform lattice with half-wavelength spacing between the lattice points, so the hardware cost is very high.
Han Zhang +3 more
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Improved scheduling algorithm for signal processing in asynchronous distributed ultrasonic total-focusing-method system. [PDF]
PLoS ONE, 2019 Compared to the conventional ultrasonic phased-array system, a large-element phased-array system employing the total focusing method (TFM) can yield improved image resolution and accuracy, providing more flexible scanning methods and image merging ...
Yuzhong Li, Wenming Tang, Guixiong Liu
doaj +4 more sources
Enhanced Near-Surface Flaw Detection in Additively Manufactured Metal Ti-5Al-5V-5Mo-3Cr Using the Total Focusing Method [PDF]
SensorsAdditive manufacturing (AM) enables the fabrication of complex components with high geometric freedom, but it can introduce near-surface flaws due to rapid solidification, resulting in porosity and lack of fusion. In addition, localized melting and steep
Kate van Herpt +4 more
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SN Applied Sciences, 2023 Article Highlights This study uses neural networks to probabilistically segment TFM images and investigate uncertainty. The probabilistic U-Net outperforms other models, and high uncertainty is found in the shadow zone, reflections, and small defects ...
Simon Schmid +2 more
doaj +2 more sources