Results 71 to 80 of about 2,327,371 (190)

Approaching code-compliant Non-Destructive Testing of carbon steel weld using Total Focusing Method technique

e-Journal of Nondestructive Testing
The Total Focusing Method (TFM) technique is an advanced Non-Destructive Testing (NDT) Ultrasonic Testing (UT) technique. It is usually used together with special acquisition configurations such as Full Matrix Capture (FMC) or Plane Wave Imaging (PWI ...
Wang Ke, Weina Ke
doaj   +1 more source

Space-time domain solutions of the wave equation by a non-singular boundary integral method and Fourier transform

, 2017
The general space-time evolution of the scattering of an incident acoustic plane wave pulse by an arbitrary configuration of targets is treated by employing a recently developed non-singular boundary integral method to solve the Helmholtz equation in the
Chan, Derek Y. C., Klaseboer, Evert, Sepehrirahnama, Shahrokh   +2 more
core   +1 more source

An Adaptive Total Focusing Method for Ultrasonic Imaging ofArbitrarily Stacked Carbon Fiber-Reinforced Composites

e-Journal of Nondestructive Testing
The total focusing method (TFM) is increasingly recognized as a powerful ultrasonic imaging technique for the quality assessment and internal defect detection of carbon fiber-reinforced composites (CFRPs).
Jiancheng Cao, Jingli Yan, Hui Ding, Jun Zhang   +3 more
doaj   +1 more source

Rician Beamforming: Despeckle Method via Coarray Projection Stochastic Analysis

Applied Sciences, 2020
Current computation capabilities normal, Delay and Sum (DAS) and Total Focusing Method (TFM) allow new definitions for beamformers. In this paper, a new beamforming method is proposed. It exploits diversity across pixel data after focusing process.
Virginia Yagüe-Jiménez, Alberto Ibáñez Rodríguez, Montserrat Parrilla Romero, Oscar Martínez-Graullera   +3 more
doaj   +1 more source

Efficient computation of matched solutions of the Kapchinskij-Vladimirskij envelope equations for periodic focusing lattices

, 2006
A new iterative method is developed to numerically calculate the periodic, matched beam envelope solution of the coupled Kapchinskij-Vladimirskij (KV) equations describing the transverse evolution of a beam in a periodic, linear focusing lattice of ...
E. P. Lee, Edward P. Lee, H. Wiedemann, I. Hofmann, I. Kapchinskij, M. Reiser, O. Anderson, R. C. Davidson, R. C. Davidson, S. Wolfram, Steven M. Lund, Sven H. Chilton   +11 more
core   +2 more sources

Deep learning framework for image enhancement of phased array ultrasonic imaging

Results in Engineering
Phased array ultrasonic imaging is widely used in non-destructive testing for defect detection. Sector scan (S-scan) is widely used method for rapid inspection at lower resolution.
Keonhyeok Park, Jun Hyeong Park, Bumsoo Park, Hyung Jin Lee, Sooyoung Lee, Iljoo Jeong, Anna Lee, Choon-Su Park, Seungchul Lee   +8 more
doaj   +1 more source

On production and asymmetric focusing of flat electron beams using rectangular capillary discharge plasmas

, 2017
A method for the asymmetric focusing of electron bunches, based on the active plasma lensing technique is proposed. This method takes advantage of the strong inhomogeneous magnetic field generated inside the capillary discharge plasma to focus the ...
Bagdasarov, G. A., Barber, S. K., Bobrova, N. A., Boldarev, A. S., Bulanov, S. S., Bulanov, S. V., Esarey, E., Gasilov, V. A., Gonsalves, A. J., Kando, M., Korn, G., Leemans, W. P., Levato, T., Margarone, D., Olkhovskaya, O. G., Sasorov, P. V., Schroeder, C. B., van Tilborg, J.   +17 more
core   +1 more source

Direction finding method for wideband signals base on consistent focusing

Tongxin xuebao, 2006
MTLS focusing method needs estimating direction of arrival firstly.Estimation bias in only few frequency bins could impair the entire USCM（universal spatial covariance matrix）estimation.Consistent MTLS focusing method was proposed based on the idea of ...
CHEN Hong-guang, YU Sheng-fa, SHEN Zhen-kang   +2 more
doaj   +2 more sources

Total focusing method (TFM) robustness to material deviations [PDF]

AIP Conference Proceedings, 2018
Guillaume Painchaud-April, Nicolas Badeau, Benoit Lepage   +2 more
openaire   +1 more source

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   +1 more source