A global system identification approach for the accurate parametric modeling of ultrasonic reflection and transmission experiments

• Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 43; no. 4; pp. 628 - 639
• Main Authors: Peirlinckx, L., Guillaume, P., Pintelon, R., Van Biesen, L.P.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-07-1996; Institute of Electrical and Electronics Engineers
• Subjects: Absorption; Acoustic materials; Acoustic reflection; Acoustical measurements and instrumentation; Acoustics; Calibration; Diffraction; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Inverse problems; Maximum likelihood estimation; Optical reflection; Parametric statistics; Physics; System identification; Viscoelasticity; Materials testing; Parameter estimation; Frequency domain method; Numerical method; Acoustic method; Wave reflection; Wave dispersion; Inverse problem; Wave transmission; Immersion test; System identification; Maximum likelihood; Measurement method; Ultrasound; Normal incidence
• ISSN: 0885-3010; 1525-8955
• DOI: 10.1109/58.503724

This paper presents a global system identification approach for the parametric modeling of both reflection and transmission experiments performed on a linear homogeneous visco-elastic material at normal incidence. It is shown that this global approach leads to improved estimates of the parameters occuring in the analytical model for the reflection and transmission coefficients of a visco-elastic plate immersed in water. The plane wave propagation model takes into account the absorption and dispersion in the material as well as an analytic diffraction correction for the beam spread. The proposed inverse procedure Is based on a maximum likelihood estimator.