Results 71 to 80 of about 514,588 (251)

Fibre direction and stacking sequence measurement in carbon fibre composites using Radon transforms of ultrasonic data

Composites. Part A, Applied science and manufacturing, 2019
Stacking sequence and, more generally, fibre orientation, are critical parameters in fibrous composite materials since they govern mechanical performance.
L. Nelson, Robert A. Smith
semanticscholar   +1 more source

Identifying Ultrasonic Testing Based Nondestructive Qualification Parameters for Laser DED Processed IN718

NDT - Journal of Non-Destructive Testing
This article explores the use of ultrasonic nondestructive evaluation for qualification of laser-DED IN718 samples. The main goal of this article is to identify potential ultrasonic parameters which have highest sensitivity to microstructral changes that
Guillermo Huanes-Alvan, Himanshu Sahasrabudhe, Sunil Kishore Chakrapani   +2 more
doaj   +1 more source

Coupling apparatus for ultrasonic medical diagnostic system [PDF]

, 1978
An apparatus for the ultrasonic scanning of a breast or other tissue is reported that contains a cavity for receiving the breast, a vacuum for drawing the breast into intimate contact with the walls of the cavity, and transducers coupled through a fluid ...
Frazer, R. E.
core   +1 more source

Study on ultrasonic evaluation of connection state and service performance of resistance projection welding joints

Discover Applied Sciences
Fatigue failure of welded joints is a performance factor of structural parts under dynamic load, and the effective evaluation of its life is always the key to the service ability of structures.
Zhenzhen Duan, Xueshan Zhao, Guanghao Zhou, Kunning Jia, Xiaopeng Gu, Ting Ma   +5 more
doaj   +1 more source

Ultrasonic scanner for radial and flat panels [PDF]

, 1973
An ultrasonic scanning mechanism is described that scans panels of honeycomb construction or with welded seams. It incorporates a device which by simple adjustment is adapted to scan either a flat panel or a radial panel.
Hill, E. K., Spencer, R. L.
core   +1 more source

Breast-Lesion Characterization using Textural Features of Quantitative Ultrasound Parametric Maps [PDF]

, 2017
© 2017 The Author(s). This study evaluated, for the first time, the efficacy of quantitative ultrasound (QUS) spectral parametric maps in conjunction with texture-analysis techniques to differentiate non-invasively benign versus malignant breast lesions.
A Ahmed, A Heindl, A König, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, AV Alvarenga, B Sigel, D Sengupta, E Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, F Davnall, FL Lizzi, FL Lizzi, FLL Lizzi, H Tadayyon, H Tadayyon, H Tadayyon, H Tadayyon, J Mamou, JPB O’Connor, K Polyak, KA Wear, KA Wear, KC Balaji, L Sannachi, LX Yao, M Vaidya, MJ Gerdes, ML Oelze, ML Oelze, ML Oelze, ML Oelze, ML Oelze, N Duric, N Sannomiya, R Natrajan, RJ Lavarello, RL Siegel, RM Haralick, S Chicklore, S Tan, T Cover, T Noritomi, TJ Larkin, V Goh, Y Labyed, Y Labyed, Y-Y Liao   +55 more
core   +2 more sources

Computerized Ultrasonic Imaging Inspection: From Shallow to Deep Learning

Italian National Conference on Sensors, 2018
For many decades, ultrasonic imaging inspection has been adopted as a principal method to detect multiple defects, e.g., void and corrosion. However, the data interpretation relies on an inspector’s subjective judgment, thus making the results vulnerable
Jiaxing Ye, Shunya Ito, N. Toyama
semanticscholar   +1 more source

Nondestructive test for quality control in laboratory-scale fabrication of laminated composites using programmable portable ultrasonic

International Journal of Lightweight Materials and Manufacture
Laminated composites are the most frequently used component materials in manufacturing unmanned aerial vehicles (UAVs) in research centers or start-up industries.
Yusuf Giri Wijaya, Suprijanto, Damar Rastri Adhika, Rhakamerta Hijazi, Abian Nurrohmad   +4 more
doaj   +1 more source

Scanning laser techniques for characterisation of different surface breaking defect geometries [PDF]

, 2012
Measurements using a laser scanning system consisting of a pulsed Nd:YAG laser to generate surface ultrasonic waves and an interferometer to detect the surface displacement, are presented for different samples and defect geometries.
Clough, A. R., Dutton, B. (Ben), Edwards, R. S. (Rachel S.), Hernandez-Valle, Francisco, Rosli, M. H.   +4 more
core  

Evaluation of a cheap ultrasonic stage for light source coherence function measurement, optical coherence tomography and dynamic focusing [PDF]

, 2009
We evaluate the performance of a cheap ultrasonic stage in setups related to optical coherence tomography. The stage was used in several configurations: (1) optical delay line in an optical coherence tomography (OCT) setup; (2) as a delay line measuring ...
Andersen, Peter E., Bouma, Brett E., Childs, David, Hogg, Richard, Krstajic, Nikola, Matcher, Stephen J., Smallwood, Rod, Steenbergen, Wiendelt   +7 more
core   +5 more sources