Caricamento in corso...
Materials integration & joining technologies
01DWQMZ
A.A. 2023/24
Course Language
Inglese
Degree programme(s)
Master of science-level of the Bologna process in Ingegneria Dei Materiali Per L'Industria 4.0 - Torino
Course structure
| Teaching | Hours |
|---|---|
| Lezioni | 45 |
| Esercitazioni in aula | 15 |
| Esercitazioni in laboratorio | 20 |
Lecturers
| Teacher | Status | SSD | h.Les | h.Ex | h.Lab | h.Tut | Years teaching |
|---|---|---|---|---|---|---|---|
| Casalegno Valentina | Professore Associato | IMAT-01/A | 13,5 | 7,5 | 7 | 0 | 3 |
Co-lectures
Context
| SSD | CFU | Activities | Area context |
|---|---|---|---|
| ING-IND/14 ING-IND/21 ING-IND/22 |
1,5 1,5 5 |
C - Affini o integrative B - Caratterizzanti B - Caratterizzanti |
Attività formative affini o integrative Ingegneria dei materiali Ingegneria dei materiali |
2023/24
The joining of materials has been identified as a key enabling technology for innovative and sustainable manufacturing. High performance structures and components integrating dissimilar materials and a large number of functions can be obtained only by combining various materials into a multi‐material structure.
Moreover, the progress of joining techniques and joining materials is ever increasing with the development of new materials and their application in modern technologies. This course is primarily designed for the fundamental understanding of the most recent advances in joining technologies, including joining processes and joining materials. The syllabus is oriented to a complete description and analysis of joining technologies. The course covers almost all the directions of the most known joining technologies (such as welding, brazing, diffusion bonding, use of adhesives, etc) and it is blended with fundamental development to the recent bonding technologies.
Specifically, this course aims at providing knowledge of state of the art in current and emerging joining technologies with a focus on specific industrial and related issues, with applications in mechanics, energy, environment, etc.
The study of new joining and integration techniques is one of the pillars of the Industry 4.0 paradigm since the use of new or niche materials strongly depends on the capability to integrate them with other materials. Within this framework, this course provides graduates with the scientific fundamentals on adhesion and the mechanisms of joint formation, and on mechanical joining, both direct and indirect.
Further to the theoretical study of the joining fundamentals, as described above, laboratory activities will develop the ability to apply the acquired knowledge to the critical design and manufacturing of a joint. With the aim of fostering a robust understanding of the relationship between material properties, the course will focus on the choice of joining materials and joining techniques according to (a) the final component requirements, (b) in-service performance in different application areas.
At the end of the course the students will know:
- the fundamentals of wettability and adhesion
- the principles of joint design with respect to strength
- the fundamentals of joining techniques for different material classes
- the joint characterization techniques
- the non-destructive testing of joints
Through lectures and experimental activity, the student will be able to:
1. Evaluate and compare the physical principles behind the operation of the advanced joining and processing methods e.g. welding, brazing, direct joining, etc.
2. Select the most appropriate joining system (process and materials) for a particular application/ component and analyse the pros/cons
3. Examine physical and engineering principles behind the selection of joining processes and methods for maximising the joining properties (mechanical strength, durability, corrosion resistance, etc. ).
4. Evaluate recent developments in joining technology and identify where these new processes can be used.
5. Understanding the principles of joint design with respect to strength.
The following knowledge and skills are required for attending the course proficiently:
- Basic knowledge of materials families (properties and structure) and processes (acquired in dedicated BSc and MsC lectures).
- Basic knowledge of thermal and mechanical properties of thermosetting and thermoplastic polymeric materials.
- Basic knowledge of characterization methods for polymeric/metallic/ceramic materials
- Basic knowledge of the mechanical behaviour of the bolted and bonded joints
The course will aim at describing:
Introduction to joining; fundamentals on wettability and adhesion
The mechanisms of joint formation
Selection of the most appropriate joining system (process and materials), according to final application requirements and materials properties
Joining processes: mechanical Joining, direct joining, indirect joining.
Mechanical joining (threaded fasteners, rivets) and other related joining methods…….
Direct joining and Indirect joining
Welding; the metallurgy of welding, brazing, soldering and friction stir welding. Welded joints. Mechanical properties, response to loading of butt and fillet weld beads. Strength prediction of the welded joints under static and fatigue conditions. Fundamentals and calculation examples.
Adhesive Bonding: adhesives and the bonding process. Structural adhesive joints. Types (butt joints, single- and double-lap joints), basic loading conditions. Essential information on stresses in the joints and strength prediction. Fundamentals and calculation examples.
Glasses and Glass-ceramic as joining materials for similar and dissimilar materials.
Joining of Specific Materials and Structures (metals, ceramics, polymer and composite materials); similar and dissimilar combinations.
Joining of ceramics
Joints for a specific environment: Joining of different materials for hydrogen related technologies; joining for nuclear applications
Methods to improve joining: surface modification. Plasma and laser treatments, design of interfaces
Characterisation of joints
Non destructive evaluation of joints
Hands-on laboratory activity: processing and characterization of joints; manufacturing of joints at the lab scale; characterization: mechanical tests and morphological investigation
The course includes:
(i) Class lectures supported by multimedia systems. The didactic material is uploaded before each lecture on the course platform;
(ii) experimental labs to understand and practice how to manufacture and test joints, and their characterization at R&D level
(iii) Seminars given by industry representatives will be organized, depending on the availability of companies.
(iv) Case studies on relevant topics for joints for different applications
The lab activities will be presented in a short report by each group of students and critically discussed during the course.
Learning material provided by teachers
Lecture slides;
Exam: Written test;
The grading system is different for attending and non-attending students.
For attending students:
Written test; Group project; lab activity report
The grading system includes evaluation of a group project report on a specific case study and related discussion (max 10/30); written test (max 15/30); lab activity report (max 5/30).
The written test (1 hr) is based on a questionnaire with 3 multiple choice questions, two open questions that are addressed to verify the student’s learning and knowledge of the course content.
The evaluation of the multiple choice questions considers only the correct answers; no negative points will be applied for wrong or missing answers.
The use of any support material is not allowed for the entire duration of the test.
The group project will be explained during the lessons with related examples.
Group of students may select a "case study" project and give a power point presentation on a topic related to joints for relevant applications.
The lab activity report is based on experimental activity carried out on joining topics in Politecnico labs.
To pass the exam, the written test must achieve a sufficient passing grade (≥ 8/15)
For non- attending students
The written test (2 hrs) is based on a questionnaire with 6 multiple choice questions , four open questions that are addressed to verify the student’s learning and knowledge of the course content. The evaluation of the multiple choice questions considers only the correct answers; no negative points will be applied for wrong or missing answers. The use of any support material is not allowed for the entire duration of the test. The minimum mark for passing the written exam is 18/30.
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.