Methodologies for Dataset Analysis in Regard to Obtaining Material Characteristics Using Lamb Waves

Nondestructive testing has been a fundamental technique in material characterization for an extended period, offering the distinct advantage of preserving the integrity of the tested specimen. Among the conventional methodologies, the pulse‐echo technique has been widely employed for the determination of the Young's modulus and Poisson's ratio in isotropic materials. However, for more structurally complex materials, these mechanical properties must be derived from the intrinsic crystal structure to accurately characterize the material's behavior. This study presents both theoretical and experimentally obtained dispersion curves for isotropic materials, providing a comprehensive analysis of their correlation. Various mathematical models and computational approaches are considered to establish a rigorous framework for aligning experimental dispersion data with theoretical predictions, ultimately facilitating the precise determination of material‐specific properties.