Piezoelectric Materials, Composites, and Devices: Fundamentals, Mechanics, and Applications offers practical guidance on piezoelectric materials and composites, as well as their applications on various devices. It starts with a clear overview of piezoelectric fundamentals, key parameters, and standard characterization techniques. The book also details the structure and properties of various piezoelectric materials, including single crystals, ceramics, polymers, 2-dimensional materials, and their composites. It combines numerical simulations with precise measurements for accurate characterization of these materials. The book simplifies complex concepts by presenting basic equations and models, aiding in the understanding of stress and electric fields within piezoelectric devices. The reliability and durability (fracture and fatigue) of piezoelectric materials and composites are also explained, and the final sections of the book explore the applications of piezoelectric materials on sensors, energy harvesters, and actuators, highlighting the capabilities of advanced piezoelectric materials.