308.885 Elasticity and Dislocations
This course is in all assigned curricula part of the STEOP.
This course is in at least 1 assigned curriculum part of the STEOP.

2024S, VU, 1.0h, 2.0EC
TUWEL

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

Teaching methods

Standard lecture

Mode of examination

Oral

Lecturers

Institute

Course dates

DayTimeDateLocationDescription
Wed12:00 - 13:0006.03.2024 - 26.06.2024Seminarraum BD 03 Lecture
Wed12:00 - 14:0013.03.2024 - 29.05.2024Seminarraum BA 08B - MB Lecture
Wed12:00 - 13:0010.04.2024Seminarraum BA 08A - MB Lecture
Elasticity and Dislocations - Single appointments
DayDateTimeLocationDescription
Wed06.03.202412:00 - 13:00Seminarraum BD 03 Lecture
Wed13.03.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed20.03.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed10.04.202412:00 - 13:00Seminarraum BA 08A - MB Lecture
Wed24.04.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed08.05.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed15.05.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed29.05.202412:00 - 14:00Seminarraum BA 08B - MB Lecture
Wed05.06.202412:00 - 13:00Seminarraum BD 03 Lecture
Wed12.06.202412:00 - 13:00Seminarraum BD 03 Lecture
Wed19.06.202412:00 - 13:00Seminarraum BD 03 Lecture
Wed26.06.202412:00 - 13:00Seminarraum BD 03 Lecture

Examination modalities

oral exam with a short students' presentations

Course registration

Begin End Deregistration end
31.01.2024 00:00 18.04.2024 23:59 29.02.2024 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

Language

English