ANALYSIS OF DISPERSION CHARACTERISTICS OF LOVE WAVES IN POROUS FUNCTIONALLY GRADED MATERIALS

This study investigates the dispersion characteristics of Love waves in porous functionally graded materials (FGM), focusing on the influence of porosity on the dispersion of Love waves in porous FGM. The material properties are characterized by a hybrid power-law model. Governing wave equations for a semi-infinite elastic substrate overlaid by a porous FGM layer are established upon elastic wave theory. The dispersion equation for Love waves in porous FGM is derived using the Wentzel-Kramers-Brillouin-Jeffreys (WKBJ) method. The validation of the method proposed is conducted by reducing the porous FGM layer to an isotropic case, and analysis results align with existing literatures, confirming the method’s effectiveness and validity. Numerical solutions obtained through mathematical software demonstrate the effects of porosity, of layer thickness, and of gradient index on dispersion curves. The results demonstrate that porosity, layer thickness, and gradient index have a considerable influence on Love wave dispersion characteristics. This study provides theoretical and computational foundations for analyzing Love wave behavior in porous FGM.