Acoustic Waves: Properties and Measurement


Lucas S. Lorenzen (Editor)

Series: Physics Research and Technology
BISAC: SCI055000

Acoustic signal analysis is commonly used for non-invasive pipeline condition assessment and diagnosis. Considering that pipeline systems are made of different materials ranging from steel to polymers, the analysis method is also contingent on the vibroacoustic properties of the pipe wall material.

In this compilation, an adaptive, locally defined time marching technique is presented to analyze wave propagation models. The methodology is based on two time integration parameters, namely α and γ.

Additionally, the authors present recent improvements in acoustic impedance methods to describe the transduction and propagation of guided elasticwaves in MEMS devices electrostatically actuated through thin air–gaps.

The closing study focuses on the way in which the Lorentz force acting on a continuous medium from the side of the magnetic field has a significant effect on the behavior of magnetoacoustic waves.



Table of Content


Chapter 1. Measurement and Analysis of Acoustic Signal in Liquid-Filled Pipes
(Matjaž Prek, Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia)

Chapter 2. Adaptive Time-Domain Analysis of Acoustic Waves
(Delfim Soares Jr., Structural Engineering Department, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil)

Chapter 3. Extension of Acoustic Impedance Methods to the Analysis of the Electrostatic Transduction of Plate Acoustic Waves
(Bernard Dulmet, Lilia Arapan and Mihaela-Eugenia Ivan, FEMTO-ST Institute, Time-Frequency Dpt., ENSMM, Besancon, France)

Chapter 4. Method of Geometric Acoustics in the Theory of Magnetoacoustic Waves
(Badma Mikhalyaev, Department of Theoretical Physics, Kalmyk State University, Elista, Russia)


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