Results 1 to 10 of about 2,848 (264)

Sound Field Modeling Method and Key Imaging Technology of an Ultrasonic Phased Array: A Review

Applied Sciences, 2022
An ultrasonic phased array consists of multiple ultrasonic probes arranged in a certain regular order, and the delay time of the excitation signal sent to each array element is controlled electronically.
Qian Xu, Haitao Wang
doaj   +3 more sources

All-optically controlled phased-array for ultrasonics. [PDF]

Nat Commun
Abstract The ability to dynamically shape ultrasound fields is critical for emerging applications in therapeutic ultrasound, particle manipulation and tissue engineering. While existing phased arrays provide beam steering for imaging, these newer applications require higher intensities.
Goyal R, Demeulenaere O, Fournelle M, Athanassiadis AG, Fischer P.   +4 more
europepmc   +5 more sources

Phased array ultrasonic testing of gear tooth

Cogent Engineering
This paper proposes a new testing method, phased array ultrasonic testing, for the internal defects of gear teeth, which can be used to inspect the teeth of final products, breaking the limitations of incomplete volume coverage of conventional ultrasonic
Liang Wang, Chenchen Ma
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Numerical simulation of phased array ultrasonic testing for fillet weld defects of type-B sleeve

You-qi chuyun, 2022
Type-B sleeve repair is one of the main permanent repair methods for long-distance oil and gas pipelines at present. However, fillet weld defects are often produced during the operation, which need to be detected and evaluated by phased array ultrasonic ...
Hongbo ZHANG, Yuxuan WU, Bo HU, Yan LIU, Pengjun JIA, Cuixiang PEI   +5 more
doaj   +1 more source

Nonlinear Ultrasonic Phased Array Imaging [PDF]

Physical Review Letters, 2014
This Letter reports a technique for the imaging of acoustic nonlinearity. By contrasting the energy of the diffuse field produced through the focusing of an ultrasonic array by delayed parallel element transmission with that produced by postprocessing of sequential transmission data, acoustic nonlinearity local to the focal point is measured. Spatially
Potter, J. N., Croxford, A. J., Wilcox, P. D.   +2 more
openaire   +3 more sources

Phased Array Ultrasonic Sector Scan Imaging of Helicopter Damper Bolts Based on Vector Coherence Factor

Applied Sciences, 2022
Non-destructive testing of the cracks on the in-service bolt’s shank with size M18 is a challenging technical problem. Due to the weak echo energy of cracks with large buried depths, the conventional phased array ultrasonic sector scan imaging has a low ...
Jingxing Huang, Ming Chen, Qingru Kong, Liangzhong Xiao, Chao Lu, Yao Chen   +5 more
doaj   +1 more source

Parameter optimization method for delamination defects detection of composite laminate using phased array ultrasonic

Cailiao gongcheng, 2020
Aiming at the problem of accurate identification of delamination defects of composite laminates, an optimization method of activation aperture of phased array ultrasonic testing was proposed by simulation and experiment, and the effects of the activation
CAO Hong-yi, JIANG Ming-shun, MA Meng-yuan, ZHANG Fa-ye, ZHANG Lei, SUI Qing-mei, JIA Lei   +6 more
doaj   +1 more source

3D cone-beam breast ultrasonic tomography imaging for capacitive micromachined ultrasonic transducer cylindrical array [PDF]

JASA Express Letters, 2021
In this paper, a 3D cone-beam ultrasonic transmission tomography method for capacitive micromachined ultrasonic transducer (CMUT) cylindrical phased array was proposed.
Yu Pei, Guojun Zhang, Sai Zhang, Yu Zhang, Tian Zhang, Zhihao Wang, Wendong Zhang   +6 more
doaj   +1 more source

Automated Classification of Pipeline Defects from Ultrasonic Phased Array Total Focusing Method Imaging

Energies, 2022
The defects in the welds of energy pipelines have significantly influenced their safe operation. The inefficient and inaccurate detection of the defects may give rise to catastrophic accidents.
Haibin Wang, Zhichao Fan, Xuedong Chen, Jingwei Cheng, Wei Chen, Zhe Wang, Yangguang Bu   +6 more
doaj   +1 more source

Phased array ultrasonic testing of micro-flaws in additive manufactured titanium block

Materials Research Express, 2020
While titanium components manufactured by additive manufacturing have been widely used in direct molding of complex components, their performance is strongly affected by existing internal flaws generated in the unique manufacturing process.
Xiaohui Wang, Wentao Li, Yang Li, Zhenggan Zhou, Junjie Zhang, Fengjin Zhu, Zhen Miao   +6 more
doaj   +1 more source