# 308.885 Elasticity and Dislocations CanceledThis course is in all assigned curricula part of the STEOP.\$(function(){PrimeFaces.cw("Tooltip","widget_j_id_21",{id:"j_id_21",showEffect:"fade",hideEffect:"fade",target:"isAllSteop"});});This course is in at least 1 assigned curriculum part of the STEOP.\$(function(){PrimeFaces.cw("Tooltip","widget_j_id_23",{id:"j_id_23",showEffect:"fade",hideEffect:"fade",target:"isAnySteop"});}); 2025S 2024S 2023S 2022S 2021S 2020S 2019S 2018S 2017S

2023S, VU, 1.0h, 2.0EC

## Properties

• Semester hours: 1.0
• Credits: 2.0
• Type: VU Lecture and Exercise
• Format: Presence

## Learning outcomes

After successful completion of the course, students are able to understand basic concepts from tensorial calculus, linear theory of elasticity, and a relation between elastic properites and crystal symmetries. The students learn about dislocations, their classification and relation to macroscopic material properties.

## Subject of course

Elasticity:

1. Vectors, matrices and tensors
2. The stress and strain tensors
3. The fourth rank tensor of elastic constants
4. Other tensors describing physical properties of crystals

Theory of dislocations:

1.  Properties dislocations:
• Continuum idealisation vs. discrete view
• Perfect vs. imperfect dislocations
• Curved dislocations
2. Elastic fields of straight dislocations in linear elasticity:
• Stress fields
• Energy of dislocations
• Partial dislocations, stacking faults
3.  Non-linear effects:
• Peierls-Nabarro Model
• Atomistic structure of dislocation core
4.  Dislocations in real materials:
• Dislocation sources
• Observation, TEM principles of dislocation imaging
• Dislocation motion, work-hardening
• Critical thickness for dislocation-free thin epitaxial films

Standard lecture

Oral

## Examination modalities

oral exam with a short students' presentations

## Course registration

Begin End Deregistration end
01.02.2023 00:00 20.04.2023 23:59 02.03.2023 23:59

## Curricula

Study CodeObligationSemesterPrecon.Info
700 FW Elective Courses - Mechanical Engineering Elective

## Literature

JF Nye: Physical properties of crystals

AH Cottrell: Dislocations and plastic flow in crystals

JP Hirth, J Lothe: Theory of dislocations

D Hull, DJ Bacon: Introduction to dislocations

English