- Docente: Antonio Motori
- Credits: 6
- SSD: ING-IND/22
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
- Corso: First cycle degree programme (L) in Electrical Engineeing (cod. 0922)
Learning outcomes
This course provides knowledge on structure, microstructure, properties (mainly mechanical and electrical), manufacturing technology and selection of materials. Metals, ceramics, polymers and composites are dealt with, mainly referring to their application in electrical engineering. The electrical behaviour, as well as the effects of service stresses on properties and performances of polymeric materials for high voltage insulation are deeply investigated.
Course contents
Classification of materials. Metals, ceramics, polymers amd composites used for electrical engineering applications. Main properties and their measurement according to international Standards.
Crystalline and amorphous materials. Structural imperfections and properties of crystalline solids. Metals and alloys. Ceramics. Thermoplastic and thermosetting polymers; properties and application of the main polymers.
Microstructure and properties of materials. Phase transformation in metal alloys. Thermal processing of metal alloys. Heat treatments of steels.
Electrical properties of materials: conductors, semiconductors and insulators.
Electrical conductivity. Conduction in metals: Matthiessen and Nordheim rules. Main conductors and their properties. Semiconductivity: intrinsic and extrinsic semiconductors. Insulating materials. Polarization processes. Dielectric constant and loss factor: frequency and temperature dependence Debye theory. Main insulating materials and their properities. Experimental techniques for the investigation of electrical properties of insulating materials. Test and Standards.
Mechanical properties of materials. Elastic properties. Plastic deformation. Fracture. Test and Standards.
Main fabrication and processing techniques of engineering materials.
Effects of service conditions on properties and performances of electrical insulating materials: mechanical, thermal, electrical and environmental effects. Analytical techniques for the investigation of aging and reliability of organic insulating materials.
Readings/Bibliography
W.D. Callister, Materials Science and Engineering: An Introduction, J. Wiley & Sons, New York, 1999.
W. Tillar Shugg, Handbook of Electrical and Electronic Insulating Materials, IEEE Press, New York, 1995.
A.R. Blythe, Electrical properties of polymers, Cambridge University Press, Cambridge, 1980.
International Standards (UNI, EN, ISO, ASTM, etc.) on materials.Assessment methods
Oral examination
Teaching tools
Laboratories for practice on the experimental measurement of chemical-physical, mechanical and electrical properties.
Office hours
See the website of Antonio Motori