Simultaneous evaluation of acoustic nonlinearity parameter and attenuation coefficients using the finite amplitude method

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4926974· OSTI ID:22493946

Zhang, Shuzeng; Li, Xiongbing ^[1]; Jeong, Hyunjo; Cho, Sungjong ^[2]

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1. School of Traffic and Transportation Engineering, Central South University, Changsha, Hunan, 410075 (China)
2. Division of Mechanical and Automotive Engineering, Wonkwang University, Iksan, Jonbuk 570-749 (Korea, Republic of)

A novel method to determine acoustic parameters involved in measuring the nonlinearity parameter of fluids or solids is proposed. The approach is based on the measurement of fundamental and second harmonic pressures with a calibrated receiver, and on a nonlinear least squares data-fitting to multi-Gaussian beam (MGB) equations which explicitly define the attenuation and diffraction effects in the quasilinear regime. Results obtained in water validate the proposed method. The choice of suitable source pressure is discussed with regard to the quasilinear approximation involved. The attenuation coefficients are also acquired in nonlinear regime and their relations are discussed.

• OSTI ID: 22493946
• Journal Information: AIP Advances, Vol. 5, Issue 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
APPROXIMATIONS
ATTENUATION
DIFFRACTION
EQUATIONS
EVALUATION
FLUIDS
LEAST SQUARE FIT
NONLINEAR PROBLEMS
SOLIDS
WATER