Results 21 to 30 of about 5,447,906 (320)

Stage 1 Round-Robin Report: On the Use of Total Focusing Method for Sizing Flaws in Assessing Probability of Detection [PDF]

e-Journal of Nondestructive Testing, 2023
Reliability of non-destructive (NDT) procedures is usually assessed using probability of detection (POD). However, the reliability of the POD is rarely questioned. A POD usually produces a curve that relates the size of a defect to the likelihood that
Mariana Burrowes M. Guimarães, Edward Ginzel, Gabriela Ribeiro Pereira, L. M. Tavares   +3 more
doaj   +2 more sources

High-density polyethylene buried natural gas pipe butt fusion joint defects automatic detection via total focusing method and deep learning [PDF]

MATEC Web of Conferences
This paper presents a defect detection method for butt fusion joints of high-density polyethylene (HDPE) pipes based on deep learning, which aims to achieve both high accuracy and rapid detection.
Wang Qiang, Zhang Haowen, Chen Tianliang, Xu Weirong   +3 more
doaj   +2 more sources

Research on the Vector Coherent Factor Threshold Total Focusing Imaging Method for Austenitic Stainless Steel Based on Material Characteristics

Metals
The degree of anisotropy and heterogeneity in coarse-grained materials significantly affects ultrasonic propagation behavior and scattering. This paper proposes a vector coherent factor threshold total focusing imaging method (VCF-T-TFM) for austenitic ...
Tianwei Zhao, Ziyu Liu, Donghui Zhang, Junlong Wang, Guowen Peng   +4 more
doaj   +2 more sources

Towards a multi-fidelity deep learning framework for a fast and realistic generation of ultrasonic multi-modal Total Focusing Method images in complex geometries

NDT & E International, 2023
Gerardo Emanuel Granados, Roberto Miorelli, Filippo Gatti, Sébastien Robert, Didier Clouteau   +4 more
openalex   +3 more sources

Research on ultrasonic phased array total focusing multi-mode fusion method

Journal of Physics: Conference Series
Abstract Welded seams are one of the important structural forms in the construction of industrial equipment. But during use, hazardous defects may occur within the weld. Ultrasonic phased-array total focusing method (TFM) is a relatively new post-processing imaging method that can locate defects.
Yangguang Bu, Jingwei Cheng, Wei Chen, Rui Li, Zhe Wang, Haibin Wang, Yan Chang, Tianhao Ji, Kang Li, Zhe Chen   +9 more
openalex   +2 more sources

Characterisation of small embedded two-dimensional defects using multi-view Total Focusing Method imaging algorithm

NDT & E international, 2021
Nicolas Budyn, Anthony J. Croxford, Rhodri L. T. Bevan, Jie Zhang, Paul D. Wilcox   +4 more
openalex   +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

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