Results 41 to 50 of about 1,828,003 (344)

Design and micromachining of a stretchable two-dimensional ultrasonic array

Micro and Nano Engineering, 2021
Focused ultrasound using stretchable ultrasonic arrays is a very attractive method for ultrasound neuromodulation. However, the structure and fabrication of the arrays have brought great challenges for the development of stretchable ultrasonic arrays. In
Wei Liu, Weicen Chen, Chunling Zhu, Dawei Wu   +3 more
doaj   +1 more source

Optimization algorithms for ultrasonic array imaging in homogeneous anisotropic steel components with unknown properties

, 2020
In this paper, we investigate the ability of an adaptive ultrasonic method to image point-like reflectors inside anisotropic and homogeneous nuclear steels with unknown properties, such as V-shape welds or cladded components.
Corentin Ménard, S. Robert, R. Miorelli, D. Lesselier   +3 more
semanticscholar   +1 more source

Air-Coupled Ultrasonic Spiral Phased Array for High-Precision Beamforming and Imaging

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control, 2022
Sparse spiral phased arrays are advantageous for many emerging air-coupled ultrasonic applications, since grating lobes are prevented without being constrained to the half-wavelength element spacing requirement of well-known dense arrays.
Gianni Allevato, Matthias Rutsch, Jan Hinrichs, Christoph Haugwitz, Raphael Müller, M. Pesavento, M. Kupnik   +6 more
semanticscholar   +1 more source

MOSAIC: A Scalable reconfigurable 2D array system for NDT [PDF]

, 2008
This paper documents the development of a scalable 2D array system, or Mosaic that can be targeted at a wide range of NDT applications by way of a reconfigurable tile that can be tessellated to form arrays of any size and shape.
Afroukh, F., Donald O. Thompson, L. Wang, D. R. S. Cumming, Dale E. Chimenti, J. Wallace, Wallace, J., Cumming, D.R.S., Wang, L., Cochran, S., Saillant, J.F., S. Triger, Saillant, J-F., S. Cochran, Triger, S., J. F. Saillant, F. Afroukh   +16 more
core   +1 more source

A noncontact ultrasonic platform for structural inspection [PDF]

, 2011
Miniature robotic vehicles are receiving increasing attention for use in nondestructive testing (NDE) due to their attractiveness in terms of cost, safety, and their accessibility to areas where manual inspection is not practical. Conventional ultrasonic
Summan, Rahul, Dobie, Gordon, Pierce, S. Gareth, Hayward, Gordon, G. Hayward, G. Dobie, W. Galbraith, R. Summan, S. G. Pierce, Galbraith, Walter   +9 more
core   +1 more source

Near-Field Ultrasonic Phased Array Deflection Focusing Based CFRP Wing Box Structural Health Monitoring

International Journal of Distributed Sensor Networks, 2013
Near-field ultrasonic phased array theory is researched and utilized in the carbon-fiber wing box to identify the damage in the structure. Near-field ultrasonic phased array based structural health monitoring is researched to overcome the limitation of ...
Yajie Sun, Yonghong Zhang, Chengshan Qian, Zijia Zhang   +3 more
doaj   +1 more source

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
doaj   +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

AlScN Film Based Piezoelectric Micromechanical Ultrasonic Transducer for an Extended Long-Range Detection

Micromachines, 2022
Piezoelectric micromachined ultrasonic transducers (PMUTs) have been widely applied in distance sensing. However, the sensing distance of currently reported miniaturized ultrasonic sensors (e.g., PMUTs or CMUT) is still limited up to a certain range (e.g.
Haolin Yang, Meilin Ji, Xueying Xiu, Haochen Lv, Alex Gu, Songsong Zhang   +5 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.
Irina Trendafilova, Wandowski, T., Trendafilova, I., Ostachowicz, W.M., Pawel Malinowski, Wieslaw Ostachowicz, Malinowski, P., Tomasz W   +7 more
core   +1 more source