Defects in Crystalline Solids I. Instructor: Prof. Shashank Shekhar, Department of Materials Science and Engineering, IIT Kanpur. Crystalline materials show many properties and phenomena which are dependent on defects in the presence of defects. This course intends to explore the defects in crystalline materials and their effects on properties, primarily mechanical properties. At the end of the course, the student should be able to have a broad understanding of defects in materials and their role in determining properties of materials; have a thorough understanding of the structure of dislocations in various crystals and their elastic fields; and have an overview of plastic deformation mechanisms and the role of dislocations in plasticity, fracture, fatigue and creep.
(from nptel.ac.in)
Lecture 20 - Elastic Continuum Model, Strain Field for Screw Dislocations
Elastic Continuum mechanics, Linear elastic model, fundamental equation to obtain stress and strain relation, Screw dislocation.