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.

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.

Application of Flexible Ultrasonic Phased Array Technique on Detection of Fillet Welds in Small-Diameter Pipe Holder

2017 ◽  
Author(s):  
Weican Guo ◽  
Cunjian Miao ◽  
Xingji Du ◽  
Min Wang ◽  
Junfang Xia
Keyword(s):  
Nondestructive Testing ◽  
Ultrasonic Testing ◽  
Phased Array ◽  
Coupling Effect ◽  
Ultrasonic Inspection ◽  
Technical Problem ◽  
Small Diameter ◽  
Pressure Vessels ◽  
Fillet Welds ◽  
Diameter Pipe

Fillet welds in small-diameter pipe socket of pressure vessels always have complicated structures and groove types, which make it easy to produce porosity, lack of fusion, incomplete penetration and other flaws during welding. Therefore, nondestructive testing is a significant and meaningful approach to ensure the quality of welding for pressure vessels’ safety. Ultrasonic testing is the main method for nondestructive testing of pipe fillet welds. However, it is difficult to distinguish between the interference wave and the flaw echo, or to recognize the defect signal, while utilizing conventional ultrasonic testing technology. Additionally, the coupling effect is bad for traditional rigid probe on the concave surface when the probe is inserted into the small-diameter pipe to do the inner scanning. To obtain a good coupling effect, flexible phased array technology was put forward, with a bendable probe made from flexible materials. The probe could be bent and inserted into the inner pipe for longitudinal wave scanning, giving a good matching with the inner wall and replacing the traditional rigid probe. Besides, it is more convenient to conduct the ultrasonic testing, and the focal law could be changed easily according to the curve shape of the inner pipe, without replacing the probe. Thus, scanning and dynamic focusing in multiple angles and directions can be carried out, and the position, distribution and size of the flaws could be displayed intuitively combined with real-time imaging technology. This technology is able to obtain better coupling and detecting effects and solve the technical problem for concave ultrasonic inspection of fillet welds.

scholarly journals GPU Accelerated Acoustic Field Determination for a Continuously excited Circular Ultrasonic Transducer

2020 ◽  
Vol 53 (2) ◽  
pp. 10480-10484
Author(s):  
Alberto Lemos Duran ◽  
André K. Sato ◽  
Agesinaldo M. Silva ◽  
Ediguer E. Franco ◽  
Flávio Buiochi ◽  
...  
Keyword(s):  
Acoustic Field ◽  
Ultrasonic Transducer

scholarly journals Inspection of the Composite Materials

2021 ◽  
Vol 10 (3) ◽  
pp. 146
Author(s):  
Yaser A. Jasim ◽  
Senan Thabet ◽  
Thabit H. Thabit
Keyword(s):  
Composite Materials ◽  
Visual Inspection ◽  
Magnetic Particle ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Test Method ◽  
Main Method ◽  
Destructive Test ◽  
Eddy Current Inspection ◽  
Non Destructive

<p><em>A non-destructive test method is the main method to examine most of the materials, composite materials in particular. There are too many </em><em>Non-Destructive Test (</em><em>NDT) methods to inspect the materials such as, Visual Inspection, Liquid Penetrate Inspection, Eddy-Current Inspection, Phased Array Inspection, Magnetic Particle Inspection and Ultrasonic Inspection</em><em>.</em></p><p><em>This paper aims to creat a unified methodology for engineers depending on reaserch onion to study the inspection of the composite materials.</em></p><p><em>The researchers concluded that NDT method is the most suitable method for testing any materials and the composite materials. They also recommended to choose the most suitable NDT method as every materials and composite materials have its own properties as well as the inspection methods had its own capabilities and limitations. </em></p>

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