Results 101 to 110 of about 5,014 (181)

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

Infiltration of basinal fluids into high-grade basement, South Norway: sources and behaviour of waters and brines

, 2003
Quartz veins hosted by the high-grade crystalline rocks of the Modum complex, Southern Norway, formed when basinal fluids from an overlying Palaeozoic foreland basin infiltrated the basement at temperatures of c.220degreesC (higher in the southernmost ...
Boyce, A.J., Gleeson, S.A., Munz, I.A., Yardley, B.W.   +3 more
core   +1 more source

Image reconstruction from compressed measurements for ultrasound NDT

e-Journal of Nondestructive Testing
In ultrasound NDT, Delay-and-Sum schemes are commonly used to reconstruct images from the measurement data. For single channel pulse-echo measurements, this is called Synthetic Aperture Focusing Technique (SAFT).
Eduardo Pérez, Jan Kirchhof, Fabian Kieg, Florian Römer   +3 more
doaj   +1 more source

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   +1 more source

Imaging of vertical surface-breaking cracks in concrete members using ultrasonic shear wave tomography. [PDF]

Sci Rep, 2023
Kuchipudi ST, Pudovikov S, Wiggenhauser H, Ghosh D, Rabe U.   +4 more
europepmc   +1 more source

Fast Ultrasonic Imaging with Total Focusing Method (TFM) for Inspection of Additively Manufactured Polymer Composite Component

ASNT 27th Annual Research Symposium Proceedings, 2018
Hossein Taheri, Lucas Koester, Timothy, Bigelow, Leonard J. Bond, Dominique Braconnier, Ewen Carcreff, Gavin Dao, Alan Caulder, Ahmed Arabi Hassen   +8 more
openaire   +2 more sources

Sparse Total Focus Imaging of Rail Transit Rail Defects Based on Grey Wolf Algorithm

Chengshi guidao jiaotong yanjiu
[Objective] Using the ultrasonic phased array technology can realize high-precision imaging detection of rail transit rail defects. However, the widely used FMC-TFM (full matrix capture-total focusing method) has the disadvantages of long computation ...
Lubin QIAN, Hongbo WU, Chunxiang GAO, Zhengbo WEI, Yuhui XING   +4 more
doaj   +1 more source

Definition of the 2005 flight deck environment [PDF]

A detailed description of the functional requirements necessary to complete any normal commercial flight or to handle any plausible abnormal situation is provided.
Alter, K. W., Regal, D. M.
core   +1 more source

A Methodology for Evaluating Detection Performance of Ultrasonic Array Imaging Algorithms for Coarse-Grained Materials [PDF]

, 2014
Brett, CR, Lowe, MJS, Van Pamel, A
core   +1 more source

Exploiting social media with higher-order Factorization Machines: Statistical arbitrage on high-frequency data of the S&P 500

, 2017
Over the past 15 years,there have been a number of studies using text mining for predicting stock market data. Two recent publications employed support vector machines and second-order Factorization Machines, respectively, to this end.
Grottke, Michael, Knoll, Julian, Stübinger, Johannes   +2 more
core