Ultrasonic beam propagation in highly anisotropic materials simulated by multi-Gaussian beams

Jeonga, Hyunjo; Schmerr, Lester W.

doi:10.1007/bf03179034

Cited by 8 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, for composite tests in this section, no diffraction correction was applied. Some studies attempted to obtain this correction for anisotropic solids [99,100], but these were inapplicable for the cases in this section. When the T c term was omitted (test R3), the C d value increased to 84.2 dB/m/MHz.…”

Section: Attenuation Behavior Of Fiber-reinforced Materialsmentioning

confidence: 99%

A Comprehensive Report on Ultrasonic Attenuation of Engineering Materials, Including Metals, Ceramics, Polymers, Fiber-Reinforced Composites, Wood, and Rocks

Ono

2020

Applied Sciences

View full text Add to dashboard Cite

In this paper, ultrasonic attenuation of engineering materials is evaluated comprehensively, covering metals, ceramics, polymers, fiber-reinforced composites, wood, and rocks. After verifying two reliable experimental methods, 336 measurements are conducted and their results are tabulated. Attenuation behavior is determined over broadband spectra, extending up to 15 MHz in low attenuating materials. The attenuation spectra are characterized in combination with four power law terms, with many showing linear frequency dependence, with or without Rayleigh scattering. Dislocation damping effects are re-evaluated and a new mechanism is proposed to explain some of the linear frequency dependencies. Additionally, quadratic and cubic dependencies due to Datta–Kinra scattering and Biwa scattering, respectively, are used for some materials to construct model relations. From many test results, some previously hidden behaviors emerged upon data evaluation. Effects of cold working, tempering, and annealing are complex and sometimes contradictory. Comparison to available literature was attempted for some, but most often prior data were unavailable. This collection of new attenuation data will be of value in materials selection and in designing structural health monitoring and non-destructive inspection protocols.

show abstract

Section: Attenuation Behavior Of Fiber-reinforced Materialsmentioning

confidence: 99%

A Comprehensive Report on Ultrasonic Attenuation of Engineering Materials, Including Metals, Ceramics, Polymers, Fiber-Reinforced Composites, Wood, and Rocks

Ono

2020

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The sound field was calculated by using Multi-Gaussian Beam Model [ 11 , 12 , 13 ], which can simulate the sound field of a transducer in 2D and 3D. The ultrasonic wave frequency was 1 MHz, the diameter of the transducer was 20 mm, the wall material was aluminum, in which the compressional wave speed was 6300 m/s, the shear wave speed was 3100 m/s, and the ultrasonic impedance was 17 × 10 5 gm/cm 2 ·s.…”

Section: Theory and Methodsmentioning

confidence: 99%

A Novel Ultrasonic Method for Liquid Level Measurement Based on the Balance of Echo Energy

Zhang

Wei

Liu

et al. 2017

Sensors

View full text Add to dashboard Cite

This study presents a novel method for determining the liquid level from the outside of a sealed container, which is based on the balance of echo energy received by two receiving sensors. The proposed method uses one transmitting transducer and two receiving sensors that are encapsulated in a coupling plane and arranged by certain rules. The calculation and comparison of echo energy are grounded on the difference ultrasonic impedance between gas and liquid media. First, by analyzing the propagation and attenuation characteristics of ultrasonic waves in a solid, an acoustic model for calculating the echo energy is established and simulated in MATLAB. Second, the proposed method is evaluated through a series of experiments. The difference and ratio of echo energy received by two receiving sensors are calculated and compared under two different coupling conditions. Two kinds of the sensors that are arranged by different rules are selected for measuring the liquid level, and the measurement are analyzed and discussed in detail. Finally, the experimental results indicate that the proposed method can meet the proposed accuracy requirements and can effectively solve the problems caused by some poor coupling conditions.

show abstract

“…The NDT of such structures requires an understanding of wave propagation through anisotropic media. This has led to the expansion of the MGB model for a single-element transducer to include the effects of the slowness surface, which was then used to simulate the wave field in a graphite/epoxy composite [28]. As phased arrays are being used extensively for non-destructive inspection of such structures, it is also necessary to understand the beam propagation from arrays in such anisotropic structures.…”

Section: Simulation Of Ultrasonic Beam Propagation From Phased Arrays In Anisotropic Media Usingmentioning

confidence: 99%

Simulation of Ultrasonic Beam Propagation From Phased Arrays in Anisotropic Media Using Linearly Phased Multi-Gaussian Beams

Anand

Delrue

Jeong

et al. 2020

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

Phased array ultrasonic testing is widely used to test structures for flaws due to its ability to produce steered and focused beams. The inherent anisotropic nature of some materials, however, leads to skewing and distortion of the phased array beam and consequently measurement errors. To overcome this, a quantitative model of phased array beam propagation in such materials is required, so as to accurately model the skew and the distortion. The existing phased array beam models which are based on exact methods or numerical methods are computationally expensive or time consuming. This article proposes a modeling approach based on developing the linear phased multi-Gaussian beam (MGB) approach to model beam steering in anisotropic media. MGBs have the advantages of being computationally inexpensive and remaining non-singular. This article provides a comparison of the beam propagation modeled by the developed ordinary Gaussian beam and linear phased Gaussian beam models through transversely isotropic austenitic steel for different steering angles. It is shown that the linear phased Gaussian beam model outperforms the ordinary one, especially at steering angles higher than 20 • in anisotropic solids. The proposed model allows us to model the beam propagation from phased arrays in both isotropic and anisotropic media in a way that is computationally inexpensive. As a further step, the developed model has been validated against a finite element model (FEM) computed using COMSOL Multiphysics.

show abstract

Ultrasonic beam propagation in highly anisotropic materials simulated by multi-Gaussian beams

Cited by 8 publications

References 15 publications

A Comprehensive Report on Ultrasonic Attenuation of Engineering Materials, Including Metals, Ceramics, Polymers, Fiber-Reinforced Composites, Wood, and Rocks

A Comprehensive Report on Ultrasonic Attenuation of Engineering Materials, Including Metals, Ceramics, Polymers, Fiber-Reinforced Composites, Wood, and Rocks

A Novel Ultrasonic Method for Liquid Level Measurement Based on the Balance of Echo Energy

Simulation of Ultrasonic Beam Propagation From Phased Arrays in Anisotropic Media Using Linearly Phased Multi-Gaussian Beams

Contact Info

Product

Resources

About