Analysis of the propagation characteristics of the surface acoustic waves in porous layered materials

作者：Hong Ke; Yuan Ling^*; Shen Zhonghua; Ni Xiaowu

来源：Acta Acustica, 2011, 36(2): 150-155.

• Dispersion characteristics
• Dispersion curves
• Eigenfunction expansion methods
• Iron-based
• Layered material
• Propagation characteristics
• Surface acoustic waves
• Velocity dispersion

Ultrasonic dispersion characteristics of porous layered materials are studied. Using the eigenfunction expansion method, and using the relationship between elastic constants and density of materials with porosity to calculate the phase velocity dispersion curves for Rayleigh waves in different porosity iron-based alumina layered materials, and the effects of porosity of the iron-based alumina layered materials on Rayleigh waves phase velocity are discussed in detail. The dispersion curves for Rayleigh waves can reflect the information of elastic modulus, Poisson ratio, density and porosity in layered materials, and the conclusion can be useful to study inverse properties of porous layered materials.

• 出版日期2011
• 单位南京理工大学