Tecnologia dei Materiali
Materials Technology Gabriella Roventi
the student should have a basic culture of chemistry
KNOWLEDGE AND UNDERSTANDING:
The course aims to give students knowledge about the most common families of materials for engineering purposes and their structural micro and macroscopic characteristics. This knowledge, by integrating the knowledge gained in the teachings of the basic sciences, are intended to implement technical training and scientific base of the students on the physical and mechanical behavior of materials and direct their preparation taking into account the interdisciplinary nature of the topics covered.CAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
In order to address the design project successfully, which are the basis of the practical applications of knowledge, the course aims to provide students with the information to know correctly interpret the reasons for the behavior of various metallic materials, when used in engineering practice. These qualities will be acquired through the illustration of the microstructural characteristics related to those macroscopic ones, and with the aid of practical examples. The professionalism of the students will be demonstrated by means of different capacities, such as: 1- the identification of the appropriate technology to obtain a material with the desired characteristics; 2- the ability to identify the type of the material based on the analysis of the microstructure; 3- the ability to indicate what are the appropriate tests for the characterization of the mechanical properties.TRANSVERSAL SKILLS:
The knowledge acquired from the students allow the group discussion of topics related to a type of material, which will result in the drafting of a report. What the student will get used to working in partnership with others to improve the capability of independent assessment, communication skills and awareness also of any related issues such as environmental and economic ones.
Classification of materials. Solid state: cristalline and amorphous structure of solids. Identification of crystallinity in solids. Lattice defects, point and linear defects.
Mechanical properties of metallic materials, elastic and plastic deformation; stress-strain curves; concept of ductility, brittleness and hardness. Family of metallic materials (carbon steel, stainless steel, aluminum and copper alloys). Basis concepts of metallic corrosion: theoretical an practical nobility of metals; Pourbaix diagrams; active-passive behavior of metals; short account of some typical forms of corrosion.
Polimeric materials: mers and polymers. Polimerization grade and average of molecular mass. Polimerization by addition mechanism. Polimer structure: amorphous and crystalline state. Structure and properties of some polimer materials obtained by addition or step or cross-linking polymerization. Structure and properties of principal technopolimers. Industrial methods of polymerization. Workability of thermoplastic and thermosetting polimers.
Elastomers: natural and SBR rubbers. Vulcanization process.
Development of the examination
LEARNING EVALUATION METHODS
The assessment of student learning consists of two tests:
- A written test, consisting in the solution of some exercises and some theoretical questions, for a total of 5-6 problems that will focus on topics covered in the course. The written test will be completed in two hours.
- An oral test, consisting in the discussion of one or more topics covered in the course. During the oral test it will also be discussed the performance gaps found in the written test.
The written test is preparatory for the oral exam and for accessing to it, the student must have obtained at least a pass in the written test.
The oral examination must be taken in the same session of the written test. In case of failure of the oral exam, the student will have to repeat the written test.
LEARNING EVALUATION CRITERIA
To successfully pass the whole examination, the student must demonstrate, by means of the tests described above, to have an overall knowledge of the topics covered during the course. The highest points are achieved by demonstrating an exhaustive understanding of the course contents and the ability to relate the material properties with their structure.
LEARNING MEASUREMENT CRITERIA
For each of the tests specified before, it is assigned a mark between zero and thirty. The final mark, related to thirty, is the average of the marks obtained in the two tests, with the approximation by excess to the upper integer.
FINAL MARK ALLOCATION CRITERIA
In order to obtain an overall positive evaluation, the student must achieve at least a pass, amounting to eighteen points in each of the tests described above.
Full marks with distinction is given to students who, having done all the tests correctly, have demonstrated a complete knowledge of the course topics.
W.F. Smith, J. Hashemi Scienza e tecnologia dei materiali, McGraw-Hill;
AIMAT, Manuale dei materiali per lingegneria, McGraw-Hill.
- Ingegneria Gestionale (Corso di Laurea Triennale Fuori Sede (DM 270/04))