Home - Log in

Fracture of materials

2MAF2 Fracture of materials Materials and Mechanics - Apprenticeship S8
Lessons : 15 h TD : 15 h TP : 15 h Project : 0 h Total : 45 h
Co-ordinator : Gael Marnier
Prerequisite
1MAC - 1 MAF - 2MAB - 2MAC
Course Objectives
Understand and identify the mechanisms responsible for materials fracture(lessons will mainly focus on metallic materials) in order to be able to size a structure or make a wise material choice for speficic applications.
Syllabus
22 h : Mechanical fracture mechanisms and failure criteria

- Brittle fracture (Linear elastic fracture mechanics, Fracture toughness, Griffith theory)
- Ductile fracture (rupture criteria)
- Fatigue fracture
- Microscopic aspects of fracture
- Environmentally assisted cracking


11h : Probabilistic approach of failure applied to structure reliability
Practical work (TD or TP)
Experimental work :
- Identification of ductile-to-brittle temperature transition of a steel thanks to Charpy impact tests.
- Influence of the stress triaxility ratio over the ductility of metallic materials and study of the Johnson Cook criterion.
- Fibre-reinforced polymers: influence of the composite microstructure over damage development and mechanical failure
- Acquisition of a forming limit curve: a failure criterion used to control material forming processes.
Acquired skills
Estimation of fatigue life, calculation of strutural failure probabilities and prediction of forming limits.
Bibliography
Non renseigné

© 2024 - ENSICAEN ( Legal Notices - Credits )