<p>The propagation of Love-type waves in composite structures has significant implications for wave-based sensing, energy harvesting, and structural health monitoring. This study investigates the effect of an electric membrane and a classical spring on Love-type wave propagation at the common interface of a piezoelectric fiber-reinforced composite (PFRC) layer comprising a PZT-5A-epoxy combination and a piezoelectric substrate. Utilizing a mathematical model incorporating interface conditions, the wave dispersion characteristics are examined under different bonding scenarios, such as perfect, spring-type, membrane-type, and combined spring-membrane type interfaces. Numerical analysis is conducted to elucidate the influence of material properties, bonding parameters, and interface stiffness on phase velocity. The results show that the presence of a thin electric membrane and a classical spring significantly alters Love-type wave behavior, providing opportunities for optimizing wave control in smart materials and non-destructive evaluation systems. These findings contribute to the advancement of wave manipulation techniques in engineered composite structures and the design of surface acoustic wave (SAW) devices like Love wave sensor, which have gained traction in advanced defence systems due to their robustness, sensitivity, and passive operation.</p>