2019-2020 / MECA0058-1

Fracture mechanics, damage and fatigue

Duration

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

Number of credits

 Master of Science (MSc) in Aerospace Engineering, professional focus in turbomachinery aeromechanics (THRUST)5 crédits 
 Master of Science (MSc) in Aerospace Engineering5 crédits 
 Master of Science (MSc) in Mechanical Engineering (EMSHIP+, Erasmus Mundus)5 crédits 
 Master of Science (MSc) in Engineering Physics5 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%). 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.
 

Work placement(s)

Organizational remarks

Contacts

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

Adaptation of teaching commitments following the COVID-19 pandemic for the May-June 2020 session

Teaching methods implemented : distance-learning

Assessment subjects

Assessment methods

Contacts

Adaptation of teaching commitments following the COVID-19 pandemic for the Aug-Sept 2020 session

Assessment subjects

Full content of the classes taught in fall 2019.

Assessment methods

Evaluation is based on the realization of a project (30%) and on a written examination (70%). A major part or the totality of the personal project is achieved in the context of the APRI0004 class. 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 examination is based on the full contentof 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.
Exam will be given through eCampus. in particular:




  • Questions will be obtained by eCamput or by e-mail the day of the exam;
  • Students will have to answer to the questions on separated sheets of paper; scan them; and upload them on eCampus;
  • There will be a limited time for each question.

Contacts

l.noels@ulg.ac.be

Items online

Lecture notes