The course topics are presented through theoretical and practical lectures (i.e. class exercises - worked calculation examples, laboratory exercises, written seminars - presentations, consultations, etc.) that introduce candidates to the field of applied fracture mechanics to structural integrity and component life assessment for specific structures (e.g. pressure vessels, pipelines, parts and equipment in power and processing industries, loaded structures in various fields of modern transport engineering - aircraft, land-based and floating vehicles, etc.). Assessment of the behaviour of damaged material and structural parts is understood, with the application of modern methods for predicting the operating capacity of a damaged structure and knowledge of experimental techniques for determining critical fracture mechanics parameters and the remaining operational life assessment.

Upon the successful completion of the course, the students are able to: • Identify the key factors and mechanisms leading to structural damages and failures • Identify the behaviour of the damaged material in structures • Understand structural state monitoring • Implement advanced technical concepts of fracture mechanics through analysis and structural integrity and life assessment • Formulate the stress intensity factors of fatigue cracks • Calculate the fatigue crack growth in conditions of specific loading type • Investigate and determine critical fracture mechanics parameters by applied experimental techniques • Select and apply different techniques to mitigate and control damage evolution of structures in-service

Theoretical course: Introduction (historical review; design approach; material characteristics and fracture; dimensional analysis). Basic concepts (linear elastic fracture mechanics; effects of stress concentration of the flaws in the material; Griffith equilibrium energy; energy release rate; instability and the R-curve; stress analysis of cracks; correlation between K and G; crack tip plasticity; fracture in the state of plane strain; mixed mode fracture; elastic-plastic fracture mechanics; COD; J integral; dynamic and time dependent fracture; crack growth in conditions of creep; visco-elastic fracture mechanics). Material behaviour (fracture mechanisms in metals; ductile fracture; cleavage; ductile-brittle transition; intercrystalline fracture). Applications (fracture toughness testing; K-R curves; testing the J integral; CTOD; testing the fracture of welded joints).

Practical exercises: Linear elastic fracture mechanics. Effects of stress concentration on material defects. Griffith equilibrium energy. Energy release rate. R-curve. J integral. Fracture mechanisms in metals. Ductile fracture. Cleavage. Ductile to brittle fracture transition. Intercrystalline fracture. Testing the fracture toughness. K-R curves. Testing the J integral. CTOD. Testing the fracture of welded joints. Laboratory exercises. Consultations.

Math. 1-3, Mechanics 1-3, Eng. materials 1-2, Physics and Meas., Strength of mater., Numerical Methods, Basics in Welding, FEA

1. A. Sedmak, Application of Fracture Mechanics to Structural Integrity, (in Serbian), University of Belgrade, Faculty of Mechanical Engineering, 2003. (Monograph) 2. Written course material (theoretical and exercises - scripts/handouts). 3. Guidelines for preparing laboratory reports. 4. Internet resources.

Total assigned hours: 65

New material: 35
Elaboration and examples (recapitulation): 15

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 4
Review and grading of lab reports: 3
Review and grading of seminar papers: 3
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 5

Activity during lectures: 5
Test/test: 0
Laboratory practice: 15
Calculation tasks: 15
Seminar paper: 35
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 30

T.L. Anderson, Fracture Mechanics - Fundamentals and Applications, CRC Press, 1995.; M.F. Kanninen, C.H. Popelar, Advanced Fracture Mechanics, Oxford University Press, 1985.; A. Saxena, Non-Linear Fracture Mechanics for Engineers, CRC Press, 1998.; G. P. Cherepanov, Mechanics of Brittle Fracture, McGraw-Hill International Book Co., 1979.; A. F. Liu, Structural Life Assessment Methods, ASM International, 1998.