Use of Expanded Multi-Gaussian Beam Model to Predict Radiation Beam Fields from a Phased Array Ultrasonic Transducer

2006 ◽  
Author(s):  
Joon-Soo Park
Keyword(s):  
Gaussian Beam ◽  
Phased Array ◽  
Ultrasonic Transducer ◽  
Beam Model ◽  
Radiation Beam

Calculation of Radiation Beam Field from Phased Array Ultrasonic Transducers Using Expanded Multi-Gaussian Beam Model

2006 ◽  
Vol 110 ◽  
pp. 163-168 ◽  
Author(s):  
Joon Soo Park ◽  
Sung Jin Song ◽  
Hak Joon Kim
Keyword(s):  
Exact Solution ◽  
Gaussian Beam ◽  
Time Delays ◽  
Phased Array ◽  
Ultrasonic Transducers ◽  
Beam Model ◽  
Radiation Beam ◽  
Sommerfeld Integral ◽  
Calculation Results ◽  
Ultrasonic Phased Array

For the reliable application of ultrasonic phased array technique, it is necessary to understand the characteristics of the radiation beam field from the array transducers quantitatively. Very recently, it has been developed the expanded multi-Gaussian beam model that can calculate the radiation beam field from a single, rectangular transducer with great computational efficiency. In this paper, this model is adopted to calculate the radiation beam field from array transducers with various time delays to achieve steering and/or focusing. The calculation results are compared to those obtained by well known Rayleigh-Sommerfeld integral that provides the exact solution in order to explore the validity of the expanded multi-Gaussian beam model in this task.

Radiation Beam Modeling and Intelligent Signal Interpretation for Phased Array Ultrasonic Inspection

2001 ◽  
Author(s):  
Sung-Jin Song ◽  
Hyeon Jae Shin ◽  
Jeong-Rock Kwon
Keyword(s):  
Phased Array ◽  
Ultrasonic Inspection ◽  
Wave Model ◽  
Beam Model ◽  
Computationally Efficient ◽  
High Quality ◽  
Radiation Beam ◽  
Ultrasonic Phased Array ◽  
Key Issues ◽  
Location Type

Abstract Flaw characterization with ultrasonic phased array technique involves to key issues, such as obtaining the high quality flaw images and determining the quantitative flaw information (such as location, type and size). This paper deals with these two key issues. For obtaining the high quality images, it is necessary to optimize the parameters of array transducers. To address such a need, a very computationally efficient radiation beam model is developed based on the boundary diffraction wave model, and the 3-D radiation beam fields from array transducers were simulated to investigate their characteristics in detail. From the sectorial images provided by the ultrasonic phased array technique, flaw size can be determined very successfully, if the type of the scatters is identified in advance. For the determination of the type of scatters, an intelligent signal interpretation scheme based on ultrasonic pattern recognition approach is studied, and the variation of features according to the steering angle is found to be a very sensitive feature for this purpose. The performance of the proposed approach is demonstrated with the initial experiments.

A New Multi-Gaussian Beam Model for Phased Array Transducers

2007 ◽  
Author(s):  
R. Huang ◽  
L. W. Schmerr ◽  
A. Sedov
Keyword(s):  
Gaussian Beam ◽  
Phased Array ◽  
Beam Model

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

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2352 ◽  
Author(s):  
Zhitao Xiao ◽  
Yongmin Guo ◽  
Lei Geng ◽  
Jun Wu ◽  
Fang Zhang ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Acoustic Field ◽  
Simulation Study ◽  
Phased Array ◽  
Circular Tube ◽  
Ultrasonic Transducer ◽  
Ultrasonic Inspection ◽  
Beam Model ◽  
Tube Material ◽  
Propagation Behavior

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 in a circular tube material. Firstly, the ultrasonic propagation behavior was analyzed, and a formulation of the Multi-Gaussian beam model (MGB) based on a superposition of Gaussian beams is described. The expression of the acoustic field from a linear phased-array ultrasonic transducer in the condition of a convex interface on the circular tube material is proposed. Secondly, in order to make the tapered probe wedge better fit the curved circular tube material and carry out the ultrasonic inspection of the curved surface, it was necessary to pare the angle probe wedge. Finally, acoustic field simulations in a circular tube were carried out and analyzed. The simulation results indicated that the method of ultrasonic phased-array inspection is feasible in circular tube testing. Tube materials with different curvatures need different array element lengths and widths to get the desired focused beam.

Design and comparison of PMN-PT single crystals and PZT ceramics based medical phased array ultrasonic transducer

2018 ◽  
Vol 283 ◽  
pp. 273-281 ◽  
Author(s):  
Zhang Zhang ◽  
Jialin Xu ◽  
Lili Yang ◽  
Sixing Liu ◽  
Junjie Xiao ◽  
...  
Keyword(s):  
Single Crystals ◽  
Phased Array ◽  
Ultrasonic Transducer ◽  
Pzt Ceramics
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