Course code: MM208E03

Semester: 7th - Direction: Design & Manufacturing

Specialization Category: OCD2

Course Hours: 4

ECTS: 4

i. Learning outcomes

Upon successful completion of this course, the student will be able to:

• Solve thermal problems occurring during welding.
• Suggest suitable welding procedures leading to minimization of distortion and tensile residual stresses, for given structure geometry and material grade.
• Predict the microstructure of both the weld and the heat-affected zone, using scientific knowledge from the field of physical metallurgy.

ii. General competences

Upon completion of the course, the students would develop, also, general competences, concerning:

• Search, extraction, analysis and synthesis of scientific data and knowledge, using screening of large scientific databases. - Decision making capabilities on the suitable lubricant and surface modification technique selection for a given engineering application. - Understanding the requirements for generic approaches in a worldwide environment. - Project planning and management. - Capability of performing individual- and team-working case studies. - Ability to conceive the multi-disciplinary character of various engineering applications.
• Project planning and management. - Capability of performing individual- and team-working case studies. - Ability to conceive the multi-disciplinary character of various engineering applications.

iii. Syllabus

It is a continuation of the compulsory course of the 7th semester "Forming Machining", and a deepening of the theoretical background of the subject of welding. In particular, chapters will be developed on( a) heat transfer in solids from moving heat sources, (b) physics of plasma generation and mass transfer during welding, (c) metallurgy of welded solids, (d) internal stress generation and distortions of welded structures, (e) the mechanical behaviour, primarily fatigue, of welded structures; (f) simulation techniques for predicting weld quality and weld life; and (g) non-destructive testing techniques for weld quality control.

iv. Student performance evaluation

Theory: Intermediate assessment and written final examination.
Laboratory: evaluation of practical skills and multiple-choice exams.

v. Suggested bibliography

• Pantelis D. I., Papazoglou V.I., G. (2017). Science and technology of welding. Tziolas publications.
• Welding Handbook, 5 Volumes (1984). American Welding Society (AWS).
• Cary, H.B. (1979). Modern Welding Technology. Prentice-Hall Inc.
• Davies, A.C. (1984). The Science and Practice of Welding, 2 Volumes. Cambridge
  University Press.
• Masubuchi, K. (1980). Analysis of Welded Structures: Residual stresses, Distortion and their
  Consequences. Pergamon Press Ltd.
• Kou, S. (2003). Welding Metallurgy. John Wiley & Sons Inc.