ID: 0719
Course type: theoretical and methodological
Course coordinator: Bakić M. Gordana
Lecturers: Bakić M. Gordana, Đukić Z. Miloš
Contact: Bakić M. Gordana
Level of studies: M.Sc. (graduate) Academic Studies – Mechanical Engineering
ECTS: 6
Final exam type: written+oral
Department: Department of Engineering Materials and Welding, Tribology, Fuels and Combustion
The aim of this course is for students to become competent in the area of the analysis the current state of metal during service as well as failure and fracture of welded joints. They should also develop appropriate academic skills and creativity and master practical skills needed for the profession. This course is designed to provide information through theoretical lectures but also through laboratory type (practical) exercises, computational classes and seminar papers students are responsible for writing.
Upon the successful completion of the course, students are able to: - solve specific problems in the fields of detecting and recognizing damages in metallic structures and welded joints in particular; - determine the potential causes of damage; - perceive the eventual possibilities for preventing the occurrence of damage; - define the testing programme for detecting damages in mechanical structures; - prescribe maintenance measures for preventing damage in mechanical structures; - relate the acquired knowledge to other fields, with practical applications.
Introduction.Fractures. Service properties of welded joints. Mechanical properties. Microstructural properties. Long term exploitation. Stress state. Mechanisms and causes of damage. Types of damage. Dissimilar joints. Corrosion. Damage caused by working conditions and combination of different sources. Damage and defects. Creep. Fatigue. Combination of creep and fatigue. Erosion and abrasion. Analytical diagnostic. Modern maintenance concepts and metal damage monitoring during service.
Fracture. Characterization of welded joints. Mechanical properties. Microstructural properties.Metallography. Types of damage generaly as well as of welded joints. Corrosion. Examples of corrosion damage. Damage caused by environment and combination of different sources. Creep. Creep damage. Microstructural degradation. Deformation and fracture maps. Fatigue. Combination of creep and fatigue. Erosion and abrasion. Criteria for replacements and reparation of welded joints. Technical regulations. New steels for high temperatures. Dissimilar joints. Analytical diagnostic. Reports. Modern maintenance concepts and metal damage monitoring during service.
Necessary conditions for a student to attend this course are: attended course lectures and finished exercises of Engineering materials 2.
ASM Metals HandBook Volume Special - Heat-Resistant Material, 2019, ISBN: 978-0-87170-596-9 ASM Metals HandBook Vol 13 - Corrosion, 1987, ISBN-10: 0871700190 Structural Engineering HandBook - Fatigue & Fracture, 1999
Total assigned hours: 75
New material: 25
Elaboration and examples (recapitulation): 5
Auditory exercises: 0
Laboratory exercises: 10
Calculation tasks: 5
Seminar paper: 10
Project: 0
Consultations: 0
Discussion/workshop: 5
Research study work: 0
Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 4
Review and grading of the project: 0
Test: 0
Test: 6
Final exam: 5
Activity during lectures: 5
Test/test: 40
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 15
Project: 0
Final exam: 40
Requirement for taking the exam (required number of points): 40
Basic mechanisms of mechanical structures damages (in Serbian), G. Bakić, M. Đukić, V. Šijački Žeravčić, University of Belgrade, Fac. of Mechanical Engineering, Belgrade, 2021, ISBN:978-86-6060-069-3 ; ASM Metals HandBook Vol 11 - Failure analysis and preventions, 1986, ISBN: 978-1-61503-150-4; ASM Metals HandBook Vol 08 - Mechanical Testing and Evaluation, 2000, ISBN: 978-1-62708-176-4; ASM Metals HandBook Vol 09 - Metallography And Microstructures, 1985, ISBN 10: 0871700158; ASM Metals HandBook Vol 10 - Materials Characterization, 1986, ISBN 10: 0871700166