Investigating a stepped ultrasonic phased array transducer for the evaluation and characterization of defects

2007 ◽  
Author(s):  
M. Bohenick ◽  
E. Blickley ◽  
B. R. Tittmann ◽  
M. Kropf
Keyword(s):  
Phased Array ◽  
Array Transducer ◽  
Ultrasonic Phased Array

scholarly journals Design and characterization of a laterally mounted phased-array transducer breast-specific MRgHIFU device with integrated 11-channel receiver array

2012 ◽  
Vol 39 (3) ◽  
pp. 1552-1560 ◽  
Author(s):  
A. Payne ◽  
R. Merrill ◽  
E. Minalga ◽  
U. Vyas ◽  
J. de Bever ◽  
...  
Keyword(s):  
Phased Array ◽  
Receiver Array ◽  
Array Transducer

scholarly journals Laser-scanning photoacoustic microscopy with ultrasonic phased array transducer

2012 ◽  
Vol 3 (11) ◽  
pp. 2694 ◽  
Author(s):  
Fan Zheng ◽  
Xiangyang Zhang ◽  
Chi Tat Chiu ◽  
Bill L. Zhou ◽  
K. Kirk Shung ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Phased Array ◽  
Photoacoustic Microscopy ◽  
Array Transducer ◽  
Ultrasonic Phased Array

Optimization of Element Parameters for a New OPFC Ultrasonic Phased Array Transducer

2014 ◽  
Vol 609-610 ◽  
pp. 1293-1298
Author(s):  
Zi Ping Wang ◽  
Ying Luo
Keyword(s):  
Damage Detection ◽  
Structural Damage ◽  
Phased Array ◽  
Low Voltage ◽  
Fiber Composite ◽  
Array Element ◽  
Structural Damage Detection ◽  
Array Transducer ◽  
Verification Methods ◽  
Ultrasonic Phased Array

An orthotropic piezoelectric fiber composite (OPFC) element and related OPFC ultrasonic phased array transducer which applied in damage detection of metal structures are investigated by theoretical analysis, numerical simulation and experimental verification methods. Based on electromechanical coupling, the influence of the material characteristics and geometry parameters on actuation performance is studied for the thickness expansion type OPFC elements. In view of lack in the mechanic-electronic parameter design of the existing single PZT element for modern ultrasonic phased array transducer, the related OPFC ultrasonic phased array transducer which used in metal structural damage detection is designed, which have the merits such as low voltage and limit the effects on grating lobe. The focusing acoustic field distribution is analyzed by finite element method together with directivity analysis in metals. The optimal array parameters such as phased array element interval, array element width and number of element are obtained by studying the total displacement changes as various parameters changes at focus point. The preparation of OPFC actuator used in metal structural damage detection is studied. The performance of interdigital OPFC element is also obtained by testing and comparing with the traditional PZT element. The experimental results displayed good agreement with the theoretical predictions.

Исследование применимости при контроле дефектов высокочастотных мод направленных волн с помощью фазированных решеток

2021 ◽  
pp. 27-34
Author(s):  
М.Дж. Ранджбар ◽  
Сина Содагар
Keyword(s):  
High Frequency ◽  
Phased Array ◽  
Surface Defects ◽  
Steel Plate ◽  
Small Diameter ◽  
Guided Wave ◽  
Scanning Method ◽  
Ultrasonic Guided Wave ◽  
Array Transducer ◽  
Ultrasonic Phased Array

An ultrasonic phased array scanning method was used for lamb wave evaluation of surface and in-depth defects in a steel plate. The ultrasonic guided wave modes resulting from a phased array transducer were modeled using finite element method. The experimental results showed that the high-frequency A0 mode gives acceptable sensitivity and resolution for small diameter through-thickness and surface defects. The sectorial scanning showed better axial resolution rather than spatial resolution.

Lead-free Ultrasonic Phased Array Transducer for Human Heart Imaging

2021 ◽  
pp. 1-1
Author(s):  
Xiaowen Ma ◽  
Yingchun Liu ◽  
Jiaji Ruan ◽  
Chenyang Tao ◽  
Jianren Yuan ◽  
...  
Keyword(s):  
Human Heart ◽  
Phased Array ◽  
Lead Free ◽  
Heart Imaging ◽  
Array Transducer ◽  
Ultrasonic Phased Array
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