Chaque module vaut 3 ECTS. Vous sélectionnez 10 modules/30 ECTS parmi les catégories suivantes:
- 12-15 crédits ECTS en Modules technico-scientifiques (TSM)
Les modules TSM vous transmettent une compétence technique spécifique à votre orientation et complètent les modules de spécialisation décentralisés. - 9-12 crédits ECTS en Bases théoriques élargies (FTP)
Les modules FTP traitent de bases théoriques telles que les mathématiques élevées, la physique, la théorie de l’information, la chimie, etc., vous permettant d’étendre votre profondeur scientifique abstraite et de contribuer à créer le lien important entre l’abstraction et l’application dans le domaine de l’innovation. - 6-9 crédits ECTS en Modules contextuels (CM)
Les modules CM vous transmettent des compétences supplémentaires dans des domaines tels que la gestion des technologies, la gestion d’entreprise, la communication, la gestion de projets, le droit des brevets et des contrats, etc.
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The course addresses fundamental and technical issues related to the design and maintenance of structures that shall not fail under cyclic loading. Students will be taught the principles of fatigue testing and fatigue failure analysis of mechanical structures, addressing the issues of how fatigue behavior is characterized, how fatigue failure is predicted, which physical mechanisms are responsible for the initiation and propagation of fatigue in various materials, with particular emphasis on metals and structural alloys, and how this behavior is related to the microstructure of the material.
This course will also present the most important applications of fatigue design in industry, including failure analysis, fatigue life calculation, experimental techniques, destructive and non-destructive methods of damage detection and characterization.
Compétences préalables
- Mathematics, Calculus and Mathematical Analysis
- Linear algebra and analytical geometry
- Material Science and Engineering
- Solid Mechanics
- Basics of mechanics of composite materials
- Basics of computational mechanics, including finite element methods
Objectifs d'apprentissage
- Understand the theory of fracture mechanics applied to brittle, ductile and quasi-brittle materials;
- Learn experimental techniques for the characterization of the propertie affecting crack onset and propagation;
- Understand the fatigue phenomenon of materials, including factors that affect the residual life of structures under cyclic loading and analytical methods for fatigue strenght assessment;
- Use computational mechanics as a tool to solve fracture mechanics problems and prediction of fatigue life;
- Apply the knowledge of fatigue and fracture mechanics in the design of structures and to investigate possible causes of structural failure;
Contenu des modules
Introduction to Fracture Mechanics
Linear Elastic Fracture mechanics
- Griffith’s analysis, 1st law of thermodynamics and crack growth, Energy release rate (ERR)
- Stress analysis and stress intensity factor (SIF). Failure modes (mode I, II and III)
- Relation between the SIF and ERR
- Mixed-mode propagation
- Plane stress, plane strain, R-curve, and stability of the propagation
- Experimental determination of the Fracture toughness: standard and non-standard methods
Elasto-plastic fracture mechanics
- Crack opening displacement (COD)
- J integral
- Relation between J-integral, COD and ERR
Fatigue of metals, plastic and composite materials
- Fatigue limit
- Factors affecting the crack propagation process
- Fatigue in brittle and ductile solids
- Low Cycle Fatigue and High Cycle Fatigue: application of strain- or stress-life approach in different scenarios
- Analytical and numerical methods for fatigue strength assessment
- Fatigue and random vibration analyses
- Fatigue of welded structures
- Fatigue of composite and plastic materials
- Experimental assessment of the fatigue behaviour
- Application of the theory concepts to the fatigue strength assessment in real industrial case studies
Computational fracture mechanics
- Determination of the SIF
- Determination of the J-Integral
- Virtual Crack Closure technique
- Cohesive elements
Méthodes d'enseignement et d'apprentissage
- Lectures in presence
- Tutorial in presence
- Self-study
Bibliographie
Lecture notes and learning material will be distributed to students during the semester, along with references to books and scientific papers for the specific topics discussed.
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