Results 1 to 10 of about 1,732,937 (99)

Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure

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, Changbin Joh, Won Jong Chin   +2 more
doaj   +3 more sources

Suppressing artifacts in the total focusing method using the directivity of laser ultrasound

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, Kaihua Sun, Chaoming Sun, Jianguo He, Enfu Liang, Qian Liu   +5 more
doaj   +3 more sources

Deep Learning Based Inversion of Locally Anisotropic Weld Properties from Ultrasonic Array Data

Applied Sciences, 2022
The ability to reliably detect and characterise defects embedded in austenitic steel welds depends on prior knowledge of microstructural descriptors, such as the orientations of the weld’s locally anisotropic grain structure.
Jonathan Singh, Katherine Tant, Anthony Mulholland, Charles MacLeod   +3 more
doaj   +1 more source

The Effect of the Position Determination Error for Flexible Linear Array Elements on the Tomogram Focusing

Sensors, 2023
In the article, the study of the quality of tomogram focusing during the inspection of objects with curved surfaces by flexible acoustic array was described.
Dmitry A. Sednev, Alexey I. Soldatov, Andrey A. Soldatov, Maria A. Kostina, Daria A. Koneva   +4 more
doaj   +1 more source

On the uncertainty in the segmentation of ultrasound images reconstructed with the total focusing method

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, Haoyu Wei, Christian U. Grosse   +2 more
doaj   +1 more source

Locally Optimal Subsampling Strategies for Full Matrix Capture Measurements in Pipe Inspection

Applied Sciences, 2021
In ultrasonic non-destructive testing, array and matrix transducers are being employed for applications that require in-field steerability or which benefit from a higher number of insonification angles.
Fabian Krieg, Jan Kirchhof, Eduardo Pérez, Thomas Schwender, Florian Römer, Ahmad Osman   +5 more
doaj   +1 more source

Wrinkle Detection in Carbon Fiber-Reinforced Polymers Using Linear Phase FIR-Filtered Ultrasonic Array Data

Aerospace, 2023
Carbon fiber-reinforced polymers (CFRP) are extensively used in aerospace applications. Out-of-plane wrinkles frequently occur in aerospace CFRP parts that are commonly large and complex.
Tengfei Ma, Yang Li, Zhenggan Zhou, Jia Meng   +3 more
doaj   +1 more source

Automated Classification of Pipeline Defects from Ultrasonic Phased Array Total Focusing Method Imaging

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, Zhichao Fan, Xuedong Chen, Jingwei Cheng, Wei Chen, Zhe Wang, Yangguang Bu   +6 more
doaj   +1 more source

Secondary Interface Echoes Suppression for Immersion Ultrasonic Imaging Based on Phase Circular Statistics Vector

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, Zhenghui Xiong, Yan Jing, Xi He, Qingru Kong, Yao Chen   +5 more
doaj   +1 more source

Sound Field Modeling Method and Key Imaging Technology of an Ultrasonic Phased Array: A Review

Applied Sciences, 2022
An ultrasonic phased array consists of multiple ultrasonic probes arranged in a certain regular order, and the delay time of the excitation signal sent to each array element is controlled electronically.
Qian Xu, Haitao Wang
doaj   +1 more source