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Glossary
Semester (Sem)
1First Semester
2Second Semester
AAnnual course
Educational activities
BIdentifying activities
Language
Course completely offered in italian
Course completely offered in english
--Not available
Innovative teaching
The credits shown next to this symbol indicate the part of the course CFUs provided with Innovative teaching.
These CFUs include:
  • Subject taught jointly with companies or organizations
  • Blended Learning & Flipped Classroom
  • Massive Open Online Courses (MOOC)
  • Soft Skills
Course Details
Context
Academic Year 2019/2020
School School of Industrial and Information Engineering
Name (Master of Science degree)(ord. 270) - MI (491) Materials Engineering and Nanotechnology
Track U2F - Microengineering and microtechnology
Programme Year 2

Course Details
ID Code 052517
Course Title MECHANICAL BEHAVIOUR AND DURABILITY OF POLYMERS
Course Type Integrated Course
Credits (CFU / ECTS) 10.0
Semester First Semester
Course Description - VISCOELASTIC BEHAVIOUR OF POLYMERS Constitutive relations and their role in engineering problems. Recall of basic concepts and definitions in solid and fluid mechanics. Rheological constitutive equations for polymers. Non-Newtonian shear behaviour of polymeric fluids. Example: analysis of the flow in a pipe. Shear viscosity-to-structure relationships in polymers. Shear viscosity dependence on temperature and pressure. Behaviour of polymers under 'simple' histories of the mechanical stimulus. Energetical consequences of the viscoelastic behaviour. The theory of linear viscoelasticity. Boltzmann's superposition postulate. Analogue models. Convolution integral and constitutive equations. Laplace transforms. Interconversion between transient properties. Interconversion between transient and steady-state properties. General temperature dependence of viscoelasticity. Linear theory of thermo-viscoelasticity: time-temperature 'equivalence'. Master curves and shift factor. Arrhenius' and Williams-Landel-Ferry's shift factors. Thermo-mechanical Spectrometry (time/rate/frequency or temperature scans) Problems - POLYMERS AND COMPOSITES FAILURE AND DURABILITY Environmental effects and degradation mechanisms. Reversible and non-reversible mechanisms. Chemical and physical ageing. Ageing control strategies. Shear yielding and crazing mechanisms. Yield criteria. Time and temperature dependence. Introduction to fracture mechanics. Strain energy release rate and stress intensity factor. The correspondence principle for viscoelastic materials. Application of the correspondence principle to fracture initiation and fracture propagation in polymers. Failure in composite materials. Case histories: durability of dam membranes, failure of pressurised polymeric pipes by slow crack growth, composite repair systems for damaged pipelines. Problems
Scientific-Disciplinary Sector (SSD)
Educational activities SSD Code SSD Description CFU
B
ING-IND/22
MATERIALS SCIENCE AND TECHNOLOGY
10.0
Innovative teaching The course includes  2.0  credits in Innovative Teaching as follows:
  • Blended Learning & Flipped Classroom

Schedule, add and removeAlphabetical groupCodeModule DescriptionProfessorCFUSem.LanguageCourse details
From (included)To (excluded)
--AZZZZ052516VISCOELASTIC BEHAVIOUR OF POLYMERSFrassine Roberto5.0
[1.0Innovative teaching]
1--
052515POLYMERS AND COMPOSITES FAILURE AND DURABILITYFrassine Roberto5.0
[1.0Innovative teaching]
1--
manifesti v. 3.3.7 / 3.3.7
Area Servizi ICT
14/08/2020