Patent
Axial parallel beam synthesis phased array ultrasonic inspection and measurement
TLDR
In this article, a beam synthesis method for axial parallel virtual focus beam synthesis was proposed for phased array ultrasonic inspection and measurement. But the beam synthesis belongs to a central link for phase-array ultrasonic signal processing, and has a fundamental meaning of forming a scanning beam in a specified direction so as to detect imaging.Abstract:
The invention aims to provide a novel method for phased array ultrasonic inspection and measurement beam synthesis, in particular to axial parallel virtual focus beam synthesis phased array ultrasonic inspection and measurement The beam synthesis belongs to a central link for phased array ultrasonic signal processing, and has a fundamental meaning of forming a scanning beam in a specified direction so as to detect imaging A beam required by the specified direction is formed by the axial parallel virtual focus beam synthesis, signals and noises are spatial processed so as to obtain high-precision spatial imaging resolution and obtain enough signal-to-noise ratio on the other handread more
Citations
More filters
Patent
Acoustic phased array imaging method
TL;DR: In this article, the authors proposed an acoustic phased array imaging method for full-aperture transmitting and receiving by adopting a phased array transducer to form a virtual source, so as to improve the energy of the sound field, increase the signal-to-noise ratio and ensure the imaging resolution ratio in a virtual-source synthetic process.
Patent
Ultrasonic phased array nondestructive testing method for shafts of recreation facilities
Niu Weifei,Jiang Bin,Wei Chen,Zhang Jinjun,Wang Heng,Xiao Yantong,Wang Zejun,Liu Yihuan,Zhou Rui +8 more
TL;DR: In this paper, an ultrasonic phased array non-destructive testing method for shafts of recreation facilities is presented, where the shaft member is divided into corresponding different detection areas along a length direction according to the position of the phased array probe on the end faces of the shaft and the range of the scanning angle, and the probe is utilized for scanning the areas one by one.
Patent
Camber surface wave transmission and bidirectional reception focusing ultrasonic imaging new method
Cao Tiesheng,Wang Zhen +1 more
Patent
Monitoring method and device for sand production in oil and gas wells
Dang Bo,Chen Jiao,Feng Xudong,Liu Changzan,Zheng Yahong,Zhang Xiong,Hu Jun,Wang Xingzhuo,Yang Ling +8 more
TL;DR: In this article, a focused ultrasound phase-controlled array transducer is used for collecting impact signals in a preset area; the impact signals are subjected to spatial beam guiding treatment to obtain the main area of sand particles impacting a pipe wall; and an ultrasonic signal of the sand particle impacting the pipe wall is picked up, the ultrasonic signals are submitted to spatial filtering, frequency domain filtering and time-domain filtering to obtain a sand production signal.