Results 21 to 30 of about 648 (141)

Research on defect quantification technique of Sparse array Total focusing method imaging based on Coherence factor weighting [PDF]

EPJ Web of Conferences
Additive manufacturing technology is widely used in key components in the aerospace field due to its high manufacturing freedom and high precision. However, in the process of internal quality inspection of products, the signal attenuation caused by ...
Da Kang, Hong Zhang, Yun-Miao Zhang, Zi-Xin Wang, Zhao-Guang Ma, Shan-Shan Lin, Jun-Jie Li   +6 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

Inspection for non-planar shaped welded joints of pipes using FMC ultrasonic technique

e-Journal of Nondestructive Testing, 2023
In applying ultrasonic testing (UT) to pipes with welded joints, one of the challenges is about the access limitation of UT probes caused by non-planar weld reinforcement profiles.
Sho Yamaguchi, So Kitazawa, Yasuhiro Nidaira   +2 more
doaj   +1 more source

Comparison of Ultrasonic Methods for Detecting Defects in Unidirectional Composite Material

Materials Research, 2021
Non-destructive tests are of pivotal importance in the industry, as they contribute to the decreasing of maintenance costs, reducing downtime and accidents.
Vanessa Vieira Gonçalves, Daniel Marcus Giglioli de Oliveira, Auteliano Antunes dos Santos Junior   +2 more
doaj   +1 more source

Quality Control Using Ultrasonic Phased Array Inspection of Components Produced by Directed Energy Deposition in Ti6Al4V Alloy

Research and Review Journal of Nondestructive Testing, 2023
Additive manufacturing (AM) is rapidly becoming a viable manufacturing method for industrial metallic parts. This is related to the benefits achieved, such as reducing material wastage, an increase in design freedom and weight savings.
C. Sofia Proença, A. M. Cabral, P. Rey Rodriguez, Eva Vaamonde   +3 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

Space Optimized Plane Wave Imaging for Fast Ultrasonic Inspection with Small Active Aperture: Simulation and Experiment

Sensors, 2020
Plane wave imaging (PWI) is attracting more attention in industrial nondestructive testing and evaluation (NDT&E). To further improve imaging quality and reduce reconstruction time in ultrasonic imaging with a limited active aperture, an optimized PWI ...
Hao Sui, Pan Xu, Jinxing Huang, Hongna Zhu   +3 more
doaj   +1 more source

Ultrasonic Phased Array Imaging Approach Using Omni-Directional Velocity Correction for Quantitative Evaluation of Delamination in Composite Structure

Sensors, 2023
The ultrasonic detectability of buried defects within composite materials is dependent on the anisotropy of the composite material by which the propagation property of acoustic wave in each direction is variably affected.
Xiangting Xu, Zhichao Fan, Xuedong Chen, Jingwei Cheng, Yangguang Bu   +4 more
doaj   +1 more source

Towards an Alternative to Time of Flight Diffraction Using Instantaneous Phase Coherence Imaging for Characterization of Crack-Like Defects

Sensors, 2021
Time of flight diffraction (TOFD) is considered a reliable non-destructive testing method for the inspection of welds using a pair of single-element probes.
Baptiste Gauthier, Guillaume Painchaud-April, Alain Le Duff, Pierre Bélanger   +3 more
doaj   +1 more source

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