Results 31 to 40 of about 6,397,796 (189)

Ultrasonic Array Imaging of Nuclear Austenitic V-Shape Welds with Inhomogeneous and Unknown Anisotropic Properties

Applied Sciences, 2021
The quality of ultrasound images of welds is highly penalized by the dendritic structure of the material that forms during cooling. The image of a flaw is all the more degraded as a reliable description of such a medium is most of the time not possible ...
Corentin Menard, Sébastien Robert, Dominique Lesselier   +2 more
doaj   +1 more source

Applications of Flexible Ultrasonic Transducer Array for Defect Detection at 150 °C

Sensors, 2013
In this study, the feasibility of using a one dimensional 16-element flexible ultrasonic transducer (FUT) array for nondestructive testing at 150 °C is demonstrated.
Jiunn-Woei Liaw, Jing-Chi Tzeng, Chun-Hsiung Chiu, Jeanne-Louise Shih, Kuo-Ting Wu, Cheng-Kuei Jen   +5 more
doaj   +1 more source

Modeling and Imaging of Ultrasonic Array Inspection of Side Drilled Holes in Layered Anisotropic Media

Sensors, 2021
There has been an increase in the use of ultrasonic arrays for the detection of defects in composite structures used in the aerospace industry. The response of a defect embedded in such a medium is influenced by the inherent anisotropy of the bounding ...
Chirag Anand, Roger M. Groves, Rinze Benedictus   +2 more
doaj   +1 more source

Imaging of Internal Defects of Polymer-Modified Wood Using Total Focusing Method

Advances in Polymer Technology, 2019
Polymer modification can improve the stability and corrosion resistance of wood, but it could create defects inside wood during the modification processing.
Liping Sun, Hongju Zhou, Hongwei Zhou, Guizhong Jiao, Ling Ma   +4 more
doaj   +1 more source

Collaborative Robotic Wire + Arc Additive Manufacture and Sensor-Enabled In-Process Ultrasonic Non-Destructive Evaluation

Sensors, 2022
The demand for cost-efficient manufacturing of complex metal components has driven research for metal Additive Manufacturing (AM) such as Wire + Arc Additive Manufacturing (WAAM).
Rastislav Zimermann, Ehsan Mohseni, Momchil Vasilev, Charalampos Loukas, Randika K. W. Vithanage, Charles N. Macleod, David Lines, Yashar Javadi, Misael Pimentel Espirindio E Silva, Stephen Fitzpatrick, Steven Halavage, Scott Mckegney, Stephen Gareth Pierce, Stewart Williams, Jialuo Ding   +14 more
doaj   +1 more source

Comparison of Time Domain and Frequency-Wavenumber Domain Ultrasonic Array Imaging Algorithms for Non-Destructive Evaluation

Sensors, 2020
Ultrasonic array imaging algorithms have been widely developed and used for non-destructive evaluation (NDE) in the last two decades. In this paper two widely used time domain algorithms are compared with two emerging frequency domain algorithms in terms
Zeyu Zhuang, Jie Zhang, Guoxuan Lian, Bruce W. Drinkwater   +3 more
doaj   +1 more source

Phased array probe for the inspection of large steel forgings

Cogent Engineering, 2021
Reliable inspection of large steel forgings is a significant problem across multiple industries. When the dimensions of forgings are at least 1000 mm in each direction, ultrasonic phased array inspection becomes difficult because conventional probes are ...
Frederic Dupont-Marillia, Mohammad Jahazi, Pierre Belanger   +2 more
doaj   +1 more source

Ultrasonic Total Focusing Method Technology in Carbon Steel Butt Weld Application

e-Journal of Nondestructive Testing
Carbon steel butt welds are widely used in aircraft carrier, shipbuilding, railway, aerospace and other industries. As a new technology of ultrasonic non-destructive testing, Total Focusing Method (TFM) technology is a method of image reconstruction in ...
Lixiang Hong, Jiaqiong Lin, Xueling Chen
doaj   +1 more source

An Accelerated Post-processing Calculation Method of Curved Surface Profile Extraction Based on the Total Focusing Method of Ultrasonic Phased Array

Journal of Physics, Conference Series, 2022
Surface profile extraction is a significant process for determining the ultrasonic beam propagation path based on the Fermat’s principle while applying the total focusing method (TFM) of ultrasonic phased array on a curved component immersed in water ...
Fan Li, Aizhou Yao, Limin Zhu, Chenlong Yang, Yang Zhang   +4 more
semanticscholar   +1 more source

The effect of ultrasound wave path estimation to defect characterization capability in half-skip total focusing method

Research and Review Journal of Nondestructive Testing, 2023
The total focusing method (TFM) is a post-processing imaging technique applied on full matrix capture (FMC) ultrasonic inspection (UT) dataset. In TFM the ultrasonic wave energy is synthetically focused on every pixel in the image region of interest ...
Xiangyu Lei, Håkan Wirdelius, Johan Carlson   +2 more
doaj   +1 more source