Results 41 to 50 of about 2,754 (159)

Three-dimensional model reconstruction of pipeline with inner wall corrosion based on ultrasonic phased array technology

You-qi chuyun, 2023
The inner wall corrosion of pipelines is concealed and hard to monitor in time. In order to visualize the shape of the internally corroded pipeline, as well as the defect volume and its spatial distribution, a three-dimensional (3D) model reconstruction ...
Yulong ZHANG, Rongguo HOU, Rui WANG, Miaomiao ZHANG, Zhe LYU   +4 more
doaj   +1 more source

Multi-View Reconstruction Fusing Ultrasonic Phased Array and Camera for Mobile Robots in Simulation Environment

IEEE Access
Distance sensors are important for mobile robots to perceive surrounding environment. Typical sensors like LiDARs and depth cameras have been widely used, yet each has its limitations, such as LiDARs’ relatively high cost, depth cameras’ ...
Jixiang Ren, Xiaoping Hong
doaj   +1 more source

Wavenumber Imaging of Near-Surface Defects in Rails using Green’s Function Reconstruction of Ultrasonic Diffuse Fields

Sensors, 2019
Wavenumber imaging with Green’s function reconstruction of ultrasonic diffuse fields is used to realize fast imaging of near-surface defects in rails.
Hui Zhang, Haiyan Zhang, Jiayan Zhang, Jianquan Liu, Wenfa Zhu, Guopeng Fan, Qi Zhu   +6 more
doaj   +1 more source

Ultrasonic flaw detection of discontinuous defects in magnesium alloy materials [PDF]

China Foundry, 2019
Phased array ultrasonic testing, an effective ultrasonic testing (UT) technology, has been widely used in steel inspection because of its high accuracy, sensitivity, and efficiency.
Sheng-nan Xue, Qi-chi Le, Yong-hui Jia
doaj   +1 more source

Ultrasonic Sampling Phased Array Testing as a Replacement for X-ray Testing of Weld Joints in Ship Construction [PDF]

TransNav, 2012
According to European Standard EN 1712 ultrasonic testing of thin-walled welded joints is mandatory for wall thicknesses of more than 8 mm only. Any thinner components do have to undergo X-ray inspection. Besides various advantages of X-ray testing viz.
Andrey Bulavinov, Roman Pinchuk, Sergey Pudovikov, Christian Boller   +3 more
doaj  

FPGA-Based Control System of an Ultrasonic Phased Array

Strojniški vestnik – Journal of Mechanical Engineering, 2011
One of the main features of ultrasonic phased arrays is the ability to create an ultrasonic focused beam by applying time-delayed signals to each one of the elements of the array. If the focused beam can sweep a certain area it is possible to obtain a B-scan image. This process is called beamforming.
Santos, Jaime Batista dos, Santos, Mário Joao Simoes Ferreira dos   +1 more
openaire   +2 more sources

TESTING RESEARCH ON PHASED ARRAY ULTRASONIC OF FILLET WELD OF RAPID-COOLING HEAT EXCHANGER

Jixie qiangdu, 2017
It is important for related equipment in the safe and stable performance that the integrality quality of the fillet welds of rapid-cooling heat exchanger.
OU XuSheng, QI LingMin, HAN TaiKun
doaj  

Identification of Lack of Fusion and Penetration in Circumferential Fillet Weld by Phased Array Ultrasonic Method in Gas Industry

Communications, 2015
The article deals with non-destructive ultrasonic identification of lack of fusion and penetration in circumferential fillet welds in gas industry by using Phased Array method.
Radoslav Konar, Milos Mician, Jozef Mesko, Michal Sventek   +3 more
doaj   +1 more source

Research progress of automated ultrasonic imaging detection technology for complex aircraft components

Journal of Aeronautical Materials
Traditional ultrasonic automated non-destructive testing is a great challenge in the inspection of aviation components with complex surfaces. Complex surfaces can interfere with the formation of the focus in the sound beam，and the waveform transformation
CHEN Yao, XIONG Zhenghui, LUO Junwei, WANG Hanyang, YUAN Jinzhao, LU Chao   +5 more
doaj   +1 more source

Frequency selective wave beaming in nonreciprocal acoustic phased arrays

Scientific Reports, 2020
Acoustic phased arrays are capable of steering and focusing a beam of sound via selective coordination of the spatial distribution of phase angles between multiple sound emitters.
Revant Adlakha, Mohammadreza Moghaddaszadeh, Mohammad A. Attarzadeh, Amjad Aref, Mostafa Nouh   +4 more
doaj   +1 more source