Rheology

Teachers in charge

It is not performed in the academic year 2023./2024.

Study

Textile Science and Technology - postgraduate

Course summary

30

ECTS

4

Knowledge verification

oral exam

Lecture type

lectures

Exercise type

audio practice

Subject content

Tensors and rheology. Continuum concept. Stress vector, stress tensor and finite strain tensor. Plane stress and plain strain. Hyperelasticity and linear elasticity. Linear visoelasticity behaviour. Two-dimensional elasticity. Rheological models ( Maxwell model, Kelvin model. Alfrey model). Creep and relaxation. Three dimensional model. Isotropy and anisotropy. Textiles microstructure. Micro-scale, mezzo-scale and macro-scale. Mechanical characteristics of textile materials, strength, tenacity and heat permeability. Inhomogeneous cross-section of textile material. Using rheological models for fibres, yarns, woven fabrics, knitted fabrics, technical and nonwoven fabrics.

Aim of course

Qualifying the students of the doctoral study program to be able to analyze rheological models of textile materials on their own. He/she should be able to analyze 2D and 3D models of textile materials.

Literature necessary for course

• M. F. Ashby: Materials selection in sechanical design, Pergamon Press, Oxford, 2001.
• W.E.Morton, J.W.S.Hearle: Physical properties of textile fibers, The textile Institute, 993.
• H.A. Barenes, J.T.Hutton, K. Walters: An introduction to rheology, Elsevier Science Publishers B.V., 1989.