Elasticity and Deformation

This lecture covers the fundamental concepts of elasticity and deformation, including stress, strain, and modulus of elasticity. It explains the behavior of materials under different types of loads, such as tension, compression, and shear. The lecture also discusses the relationship between Young's modulus, Poisson's ratio, and shear modulus, as well as the properties of single crystals and polycrystals. Additionally, it explores the stress-strain behavior of various materials, including metals, polymers, and ceramics, highlighting their elastic limits and yield strengths.