2019-2020 / MECA0058-1

Fracture mechanics, damage and fatigue

Durée

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

Nombre de crédits

 Master : ingénieur civil en aérospatiale, à finalité spécialisée en "turbomachinery aeromechanics (THRUST)"5 crédits 
 Master : ingénieur civil en aérospatiale, à finalité5 crédits 
 Master : ingénieur civil mécanicien, à finalité5 crédits 
 Master : ingénieur civil physicien, à finalité5 crédits 

Enseignant

Ludovic Noels

Langue(s) de l'unité d'enseignement

Langue anglaise

Organisation et évaluation

Enseignement au premier quadrimestre, examen en janvier

Horaire

Horaire en ligne

Unités d'enseignement prérequises et corequises

Les unités prérequises ou corequises sont présentées au sein de chaque programme

Contenus de l'unité d'enseignement

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

Acquis d'apprentissage (objectifs d'apprentissage) de l'unité d'enseignement

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.

Savoirs et compétences prérequis

Good knowledge in

  • Solid mechanics
Basic knowledge in
  • Finite-element method

Activités d'apprentissage prévues et méthodes d'enseignement

Exercises and personal project.

Mode d'enseignement (présentiel ; enseignement à distance)

Face-to-Face

Lectures recommandées ou obligatoires et notes de cours

Modalités d'évaluation et critères

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%). In order to obtain a grade larger or equal to 8/20, grades of at least 8/20 should have been secured for the both the project and written examination parts separately. If one of the two parts has been granted with a grade lower than 8/20, this grade will be used as a final grade. In case of a resit, if a grade of at least 10/20 has been given to the project, only the written examination will be redone. The previous rule of securing 8/20 grades for both parts separately will still hold.
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 exam, to the guest lectures, and achievement of the project are mandatory. The student who does not attend to compulsory sessions or who does not delivered the assignments on time will not be allowed to present the exam.

Stage(s)

Remarques organisationnelles

Contacts

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

Notes en ligne

Lecture notes