Results 41 to 50 of about 14,446 (253)

Rendering volumetric haptic shapes in mid-air using ultrasound:Proceedings of ACM SIGGRAPH Asia 2014 [PDF]

, 2014
We present a method for creating three-dimensional haptic shapes in mid-air using focused ultrasound. This approach applies the principles of acoustic radiation force, whereby the non-linear effects of sound produce forces on the skin which are strong ...
Carter, Tom, Long, Benjamin, Seah, Sue Ann, Subramanian, Sriram   +3 more
core   +2 more sources

Study on Denoising Method of Weld Defect Signal Based on SSA-VMD-WPD

Applied Sciences
Defects in welds can affect the structural safety and reliability of workpieces. Currently, the method of using phased array ultrasonic inspection technology for non-destructive testing of weld structures with high detection efficiency, good sensitivity,
Xiangqing Chen, Sifan Gong, Wei Pan, Youqing Kang, Weili Gong   +4 more
doaj   +1 more source

Focusing Modeling of OPFC Linear Array Transducer by Using Distributed Point Source Method

Abstract and Applied Analysis, 2014
The improvement of ultrasonic phased array detection technology is a major concern of engineering community. Orthotropic piezoelectric fiber composite (OPFC) can be constructed to multielement linear array which may be applied conveniently to actuators ...
Ziping Wang, Ying Luo
doaj   +1 more source

Defect Detection Algorithm for Wing Skin with Stiffener Based on Phased-Array Ultrasonic Imaging

Sensors, 2023
In response to the real-time imaging detection requirements of structural defects in the R region of rib-stiffened wing skin, a defect detection algorithm based on phased-array ultrasonic imaging for wing skin with stiffener is proposed.
Chuangui Wu, GuiLi Xu, Yimeng Shan, Xin Fan, Xiaohui Zhang, Yaxing Liu   +5 more
doaj   +1 more source

Metascreen-Based Acoustic Passive Phased Array [PDF]

, 2015
Conventional phased arrays require a large number of sources in forming a complex wave front, resulting in complexity and a high cost to operate the individual sources.
Cheng, Jian-chun, Jiang, Xue, Li, Yong, Liang, Bin, Zhang, Likun   +4 more
core   +1 more source

Ultrasonic phased array flexible coupling detection of defects in high-voltage cable terminal lead seals

Frontiers in Mechanical Engineering
High-voltage cable terminal lead seals may develop defects such as holes, cracks, or delamination due to substandard installation quality or external forces during operation.
Peng Ziping, Zheng Jishi, Zhen Zhiming, Huang Yaosheng, Li Xiaobin, Cai Qiushen   +5 more
doaj   +1 more source

Optimal Design of Sparse Array for Ultrasonic Total Focusing Method by Binary Particle Swarm Optimization

IEEE Access, 2020
Ultrasonic phased array technology is used in various fields. Traditional full phased arrays place elements in every position of a uniform lattice with half-wavelength spacing between the lattice points, so the hardware cost is very high.
Han Zhang, Bichao Bai, Jianfeng Zheng, Yun Zhou   +3 more
doaj   +1 more source

A phased array-based method for damage detection and localization in thin plates [PDF]

, 2009
A method for damage localization based on the phased array idea has been developed. Four arrays oftransducers are used to perform a beam-forming procedure.
Fomme, P., Irina Trendafilova, Pawel Malinowski, Peil, U., Pena, J., Purekar, A.S., Tomasz Wandowski, Wandowski, T., Wieslaw Ostachowicz, Zak, A.   +9 more
core   +1 more source

Acoustic Field of a Linear Phased Array: A Simulation Study of Ultrasonic Circular Tube Material

Sensors, 2019
As ultrasonic wave field radiated by an ultrasonic transducer influences the results of ultrasonic nondestructive testing, simulation and emulation are widely used in nondestructive testing. In this paper, a simulation study is proposed to detect defects
Zhitao Xiao, Yongmin Guo, Lei Geng, Jun Wu, Fang Zhang, Wen Wang, Yanbei Liu   +6 more
doaj   +1 more source

An annular array with fiber composite microstructure for far field NDT imaging applications [PDF]

, 2010
This paper describes the design and fabrication of a reduced element count annular array for far field NDT imaging applications, built with a random fiber piezoelectric composite microstructure.
Dziewierz, J., Gachagan, A., O'Leary, R.L., Ramadas, S.N., Velichko, A., Wilcox, P.D.   +5 more
core   +1 more source