last modified: 07/03/2006

Course code: MS4081
Course name: Properties of Materials
This concerns a Course
In the program of MSc MSE and of
EC (European Credits): 4 (1 EC concerns a work load of 28 hours)
Faculty of Mechanical, Maritime and Materials Engineering
Department of
Lecturer 1: Dr.ir. M. Janssen	Tel.: 015 - 27 85866 / 86940
Lecturer 2: Dr. E. Mendes
Lecturer 3:
Catalog data: Elasticity, plasticity, viscoelasticity, strain rate, fracture mechanics, orientation, melt, entanglement, ageing, polymer glass, liquid crystallinity, mechanical properties, properties of polymers, material properties, properties of materials	Course year:	MSc 1^st year
	Course language:	English
		In case of Dutch: Please contact the lecturer about an English alternative, whenever needed.
	Semester:	1A / 1B
	Hours per week:	2
	Other hours:
	Assessment:	Written exam
	Assessment period:	1B / 2B
	(see academic calendar)
Prerequisites (course codes):
Follow up (course codes): Mechanical Properties (MS4011)
Detailed description of topics: Part on Mechanical Properties: - Multiaxial stress and strain, elastic and plastic material behaviour, strain hardening, plastic instability, effects of strain rate and temperature, super plasticity - Lineair-elastic fracture mechanics: stress intensity, effects of crack tip plasticity and stress state, energy release rate, determination of critical values - Elastic-plastic fracture mechanics: J integral, crack tip opening displacement, determination of critical values Part on Properties of Polymers: - Viscoelastic Models - Viscoelasticity of entangled and non-entangled polymers - Glassy state and time-temperature supperposition principle - Molecular orientation (and liquid crystalline polymers) - Long-term behaviour, physical ageing
Course material: Chapters 1 - 5 of Metal Forming by W.F. Hosford and M. Caddell. provided on demand as a reader Fracture Mechanics by M. Janssen, J. Zuidema and R.J.H. Wanhill, 2nd edition, DUP (2002) Collection of “Exercises on Fracture Mechanics”, provided on demand Materials Science of Polymers for Engineers by T.A. Osswald and G. Menges, Hanser Publishers, München M. Rubinstein & R. Colby, “Physics of Polymers”, Oxford The Structure and Rheology of Complex Fluids, R. G. Larson, Oxford University Press, 1999 Gert Strobl, The Physics of Polymers, 2nd ed. Introduction to Polymers, R.J.Youngg and P.A. Lovell, 2nd Ed., Chapman & Hall 1997
References from literature:
Remarks assessment, entry requirements, etc.:
Learning goals: Part on Mechanical Properties: The student is able to employ mechanical quantities such as stress, strain and basic fracture mechanical quantities to describe elastic and plastic deformation and the onset of crack growth in solids. Furthermore, the student is able to calculate basic elastic and plastic material response and fracture behaviour based on the relevant material properties and understands how to experimentally determine these material properties. More specifically, the student is able to: 1. explain the concepts of stress and strain, distinguishing normal and shear components on the one hand and principal components on the other 2. transform multiaxial stress and strain states to a rotated set of axes, both analytically and using Mohr's circle 3. formulate the concepts of engineering stress and strain and true stress and strain 4. quantify the relation between stress and strain for an elastically deforming isotropic material 5. predict the stress state that leads to the onset of plasticity and calculate the subsequent direction of plastic strain for isotropic material using the flow criteria of Tresca and Von Mises 6. formulate the concepts of effective stress and effective strain 7. explain experimental methods to quantify plastic material behaviour for different stress states, more specifically the strain hardening behaviour of the material 8. predict plastic instability for uniaxial and biaxial stress states 9. identify the principles and limitations of the fracature mechanical concepts stress intensity, energy release rate, J integral and crack tip opening displacement 10. explain the effects of crack tip plasticity and stress state on fracture behaviour 11. explain accepted experimental procedures to obtain critical values for fracture mechanics parameters 12. analyse a basic fracture mechanical problem on the basis of material properties, geometry and mechanical load Part on Properties of Polymers: The student is able to employ mechanical quantities such as stress, strain and quantities to describe deformation in visco-elastic fluids such as polymers. Furthermore, the student is able to describe or calculate basic visco-elastic material response from entangled and non-entangled polymer systems relating that to the characteristic times at the molecular level. He also understands how to experimentally determine these material properties. More specifically, the student is able to: 1. explain the concepts of stress, strain and their time rates in the framework of linear visco-elasticity theory 2. formulate the concepts of simple visco-elastic models such as the Maxwell model 3. explain the relation between visco-elastic quantities 4. explain experimental methods to quantify visco-elastic material behaviour 5. describe characteristic polymer times such as Rouse time and Reptation time in polymer melts 6. describe Rouse modes of a polymer chain 7. explain the relation between polymer characteristic times and modes and visco-elastic quantities 8. formulate the relation between quantities describing the polymer chain such as polymerization degree, Kuhn length, tube diameter and tube length and visco-elastic quantities. 9. calculate the quantities such as molecular weight between entanglements from experimental rheological data 10. describe dynamical response principles such as Boltzmann’s and time-temperature superposition principle 11. describe the concept of glassy state and that of the phenomenological equations describing this state
Computer use:
Laboratory project(s):
Design content: