Mechanical Behaviour of Materials
Code
3660
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Engenharia Mecânica e Industrial
Credits
6.0
Teacher in charge
Jorge Joaquim Pamies Teixeira, Rosa Maria Mendes Miranda
Weekly hours
4
Total hours
84
Teaching language
Português
Objectives
The subject aims at providing students with knowledge on:
- mechanical properties of major groups of materials in engineering
- phenomenological aspects of plasticity
- mechanical tests
- concepts and applications of fracture mechanics, fatigue and creep
- criteria for design
- concepts of stress corrosion.
Subject matter
Theory and concepts of plasticity. Mechanical testing.
Fracture mechanics: microstrutural characteristics of fracture. Stress intensity factor. J Integral . Stress distribution at crack tip. Experimental methods of evaluation of fracture toughness. Nucleation and crack propagation in ductil materials.
Fatigue: microstrutural characteristics. Fatigue limit. Types of fatigue and characteristics. laws applicable in each domain. Design of components under fatigue conditions.Neuber rule. Iniciation and propagation of styress corrosion cracks under corrosion environment. Fatigue in welded structures
Creep and stress relief.
Stress corrosion. Fundamentals.
Case studies in service conditions
Bibliography
•Jorge Rodrigues e Paulo Martins, Tecnologia Mecânica - vol.1, ed. Escolar Editora, 2005
•Martins Ferreira, Comportamento mecânico de materiais, ed. FCTUC, 1999
•Ashby, Michael F., Jones, David R.H., “Engineering Materials 1: An introduction to their properties and applications”, 2nd Edition, Butterworth Heinemann, 1996
Evaluation method
Continuous evaluation with 3 intermediate tests or final written exam.
Minimum mark of each test : none
Minimum mark for final approval : 10/20