experimental and simulation studies
Mário Santos (Author), Jaime Santos (Author)

Abstract

This work evaluates the ultrasonic scattering attenuation of structures with complex scatterer distributions via experimental and simulation studies. The proposed approach uses experimental attenuation knowledge to infer the scatterer size and its concentration in the studied structures, which are important for the effective construction of simulated models. The MATLAB k-Wave toolbox has been used to implement the simulator. Several cast-iron samples have been used to demonstrate the importance of simulation in the characterization of such structures. First, the scattering attenuation was evaluated using the Truell and Papadakis models, and then the results were compared with experimental ones. Emphasis was given to the Papadakis approach because it takes into account the scatterer size distribution. It is demonstrated that both analytical models provide results that are far from the experimental ones. The developed simulator for the studied samples led to a predictive model, in which the attenuation was proportional to the fifth power of the scatterer size, and the corresponding formulation is close to the one proposed by the analytical models.

Keywords

modelling;anisotropy;pulse-echo;simulation;ultrasonic attenuation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 620.179.16
COBISS: 69927171 Link will open in a new window
ISSN: 0039-2480
Views: 1312
Downloads: 179
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Other data

Secondary language: Slovenian
Secondary title: Slabitev ultrazvočnih valov v nodularni litini z razpršitvijo: eksperimentalna študija in simulacija
Secondary keywords: modeliranje;anizotropija;impulzna ultrazvočna metoda;simulacija;slabitev ultrazvoka;
Type (COBISS): Article
Pages: str. 245-255
Volume: ǂVol. ǂ67
Issue: ǂno. ǂ5
Chronology: May 2021
DOI: 10.5545/sv-jme.2020.7078
ID: 13130071
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