2018-2019 / MECA0058-1

Fracture mechanics, damage and fatigue

Duration

30h Th, 10h Pr, 75h Proj.

Number of credits

 Master in aerospace engineering, professional focus in turbomachinery aeromechanics (THRUST) (Erasmus mundus)5 crédits 
 Master in aerospace engineering (120 ECTS)5 crédits 
 Master in mechanical engineering (120 ECTS)5 crédits 
 Master in physical engineering (120 ECTS)5 crédits 

Lecturer

Ludovic Noels

Language(s) of instruction

English language

Organisation and examination

Teaching in the first semester, review in January

Schedule

Schedule online

Units courses prerequisite and corequisite

Prerequisite or corequisite units are presented within each program

Learning unit contents

The class presents the basis of fracture mechanics. Failure of structures is explained by studying the physic of materials. This behavior is then modeled analytically. Finally numerical methods applied in fracture mechanics are presented.
Subjects covered by the lectures are

  • Linear elastic fracture mechanics (LEFM)
  • Non-linear fracture mechanics (NLFM)
  • Fatigue
  • Design approaches
  • Recent numerical approaches

Learning outcomes of the learning unit

Through a deep understanding of the theory and the realization of a project, the student will be able to apply numerical tools to design structures and study crack propagation problems. In particular:

  • He will have a deep understanding of fracture mechanics theories and will be able to summary, compare and explain them.
  • He will have a deep understanding of the resolution methods of fracture mechanics problems, and will be able to summary, compare and explain them. He will also know their application range.
  • He will be able to apply the resolution methods to classical problems of fracture mechanics.
  • He will be able to analyse and to evaluate (justify and criticise) these methods.
  • He will be able to analyse new problems.

Prerequisite knowledge and skills

Good knowledge in

  • Solid mechanics
Basic knowledge in
  • Finite-element method

Planned learning activities and teaching methods

Exercises and personal project.

Mode of delivery (face-to-face ; distance-learning)

Face-to-Face

Recommended or required readings

Assessment methods and criteria

Evaluation is based on the realization of a project (30%) related to the use / development of numerical methods specific to fracture mechanics and on an written examination (70%). For the resit, if a grade of at least 10/20 has been given to the project, only the written examination will be redone.
The examination is based on the whole content of the class. Problems similar to the ones studied during the classes, and new problems will be part of the questions. Justification using the theoretical content is also asked.
Participation to the examination, to the guest lectures, and achievement of the project are mandatory. The student who does not attend to compulsary sessions or who does not delivered the assignements on time will not receive a grade for the class

Work placement(s)

Organizational remarks

Contacts

L. Noels (L.Noels@ulg.ac.be)

Items online

Lecture notes