Thermal and mechanical properties of materials

The mechanical and thermal properties of materials are central to many applications in the field of energy materials. After an introduction to these different fields of application, this course unit aims to define the various concepts necessary for understanding both the mechanical and thermal properties of materials, limiting itself to bulk materials.

Hourly volumes:

            CM: 11 a.m.

            TD: 9 a.m.

The objective is to provide a solid foundation of skills for:

1) understanding the various phenomena governing mechanical and thermal properties

2) knowledge of the different classes of materials

3) Determination of elastic constants

4) determination of thermal conductivity

Differential calculus. Matrix algebra. Knowledge of crystallography.

Classical thermodynamics

Terminal control (1)

1) Thermal properties (5.5 CM - 4.5 TD)

-Microscopic-macroscopic link; electron and phonon temperature; heat capacity (application: thermal energy storage)

-Thermal conductivity; heat diffusion law (application: building insulation)

-Thermal expansion; microscopic aspect and bond anharmonicity; atypical effects (negative expansion, massive expansion, etc.) (technological applications)

-Melting and heat resistance (thermal shock)

-Diffusivity in materials

-thermoelasticity

2) Mechanical properties (5.5 CM - 4.5 TD)

- Introduction/definitions: what are mechanical properties?
- Stress/strain relationships:

constraints: normal, tangential
deformations: tension, shear, expansion
stress-strain curve: elastic (Hooke), plastic, stricture
definition of different types of materials
- Elastic range:
definition of different elastic moduli (bulk, shear, Young's, Poisson)
introduction of elastic constants Cij
elastic energy density
expression of elastic moduli as a function of Cij
application to cubic, quadratic, and orthorhombic crystals

Administrative contact(s):

Master's Program in Chemistry Secretariat

https://master-chimie.edu.umontpellier.fr/