MATERIALS SCIENCE AND TECHNOLOGY

Modulo MACROMOLECULAR CHEMISTRY

• Knowledge and understanding: Basic knowledge of materials of interest for mechanical engineering, correlating their application characteristics to composition, structure, production and processing technologies
• Applied knowledge and understanding skills: Ability to apply what has been learned during the lectures in the exercises carried out during the course.
• Independent judgment: Students learn to objectively evaluate what they have learned during lessons and exercises.
• Communication skills: Students acquire communication skills that are formed both during the lessons, thanks to a continuous verbal conversation with the lecturer, and during the oral exams.
• Learning skills: Learning skills are assessed through the oral exam and exercises which are an important part of the course.

The course will be done through lectures, ongoing tests and exercises. If course should be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the program planned and outlined in the syllabus

Chemistry

Attendance to the course is compulsory. In addition to the cases already provided for by the Regulations, partial or total motivated exemptions from attendance can be recognized, through a specific resolution of the Course Council, upon presentation of a motivated request recognized by the Council and if the conditions exist, agreed with the lecturer, to activate the necessary forms of supplementary didactic support, designed to guarantee the adequate preparation of the student. As regards the status of student worker, student athlete and student in situations of difficulty ascertained through formal certifications, please refer to Article 27 of the "University Didactic Regulations"

Classification and structure of polymeric materials. Mechanical behavior at small deformations: viscoelastic behavior, creep tests, relaxation tests and dynamic-mechanical behavior. Boltzman's principle, viscoelastic models. Form diagrams. Mechanical behavior at large deformations. Rheology: flow curves and constitutive relationships. Rheometry. Rheological behavior of polymers in the liquid state. Transformation technologies of polymeric materials. Polymer matrix composites. Technologies for the production of polymer matrix composite products

1. W. D. Callister, Jr.: “Materials Science and Engineering; An Introduction” - Wiley
2. W. F. Smith: “Materials Science and Engineering” - McGraw - Hill
3 . D. R. Askeland, P. P. Fulay, W. J. Wright, "The Science and Engineering of materials" – Cengage learning
4. S.Fakirov - Fundamental of Polymers Science for Engineers – (2017) - Wiley-VCH
5 L.H. Sperling - Introduction to Physical Polymer Science - Wiley-VCH
6. Ward, J. Sweeney – Mechanical Properties of Solid Polymers – Wiley
7. Manufacturing processes for advanced composites (F.C. Campbell – Elsevier)
8. Class notes

 

During the year, seven (ordinary) exam sessions are scheduled plus four sessions reserved for out-of-course students.

In the periods allowed by the academic calendar it is also possible, by contacting the teacher by e-mail to agree on further exam interviews (on a weekly basis)

How to register for an exam session: Booking on the university portal

The exam consists in the oral presentation of topics addressed during the course

The evaluation of the exam is based on the following criteria: level of knowledge of the required topics, expressive ability and ownership of language, ability to apply knowledge to simple case studies, ability to link the different themes of the course program.

Verification of learning can also be carried out on line, should the conditions require it.

Viscoelastic properties of polymers. Constitutive equations. Compliance.

Dynamic mechanical measurements and study of the structure of polymers and transitions.

Viscoelastic models.

Mechanical principles of brittle fracture of polymeric materials. Mechanical properties of fibers.

Newtonian and non-Newtonian behavior.

Dependence of viscosity on deformation rate.

Dependence of viscosity on molecular mass.

Melt elasticity phenomena.

Constitutive equations of melted viscoelastic polymers.

Rheometers.

Printing. Extrusion. Injection molding.

Fibers and matrices. Fiberglass. Carbon fibers. Aramid fibers. Fiber format for composites.

Particle composites. Mechanical properties. Micromechanics of the foil.

Manual technologies. Forming in an autoclave. Forming for Resin Transfer Molding. Forming by wrapping. Pultrusion molding. Pressed bag forming.