Course Information
TitleΜηχανική Θραύσης και Κόπωση Κατασκευών / FRACTURE MECHANICS AND STRUCTURAL FATIGUE
SchoolMechanical Engineering
Cycle / Level2nd / Postgraduate
Teaching PeriodWinter
CoordinatorGeorgios Savvaidis
Course ID20002101

Programme of Study: PPS Aeromichanics Turboengines

Registered students: 1
OrientationAttendance TypeSemesterYearECTS
CoreCompulsory Course115

Class Information
Academic Year2018 – 2019
Class PeriodWinter
Faculty Instructors
Weekly Hours3
Class ID
Course Type 2016-2020
  • Scientific Area
Course Type 2011-2015
Specific Foundation / Core
Mode of Delivery
  • Face to face
Digital Course Content
Language of Instruction
  • English (Instruction, Examination)
Learning Outcomes
Understand and describe the mechanical and failure behavior of metals under cyclic stresses and strains with constant or variable amplitudes and mean stresses. Understand and describe the influence of technological/manufacturing factors on fatigue behavior of engineering components. Understand and apply the state-of-the-art theoretical concepts to calculate the lifetime of components subjected to fatigue loading. Understand and assess the limitations of the concepts.
General Competences
  • Apply knowledge in practice
  • Retrieve, analyse and synthesise data and information, with the use of necessary technologies
  • Adapt to new situations
  • Work autonomously
  • Work in an interdisciplinary team
  • Generate new research ideas
Course Content (Syllabus)
Elastoplastic cyclic behavior of materials, stabilized cyclic stress-strain curves, Incremental Step Test, Ramberg-Osgood material law, mean stresses, stress ratio, cyclic relaxation, cyclic hardening, stress-strain hysteresis loop, Masing behavior, Wöhler (S-N) curves, cyclic damage, Miner's damage accumulation rule, load sequence effects, non-linear damage accumulation, modifications of Miner's rule, mean stress parameters, fracture mechanics based damage parameters, K-factors and J-integral, crack opening and closure behavior, notches, stress concentration factors, notch strain simulation tests, calculation of notch (local) strains and stresses, Neuber's rule, Seeger's notch approximation, load and stress spectra, Level Crossing cycle counting, Range Pair cycle counting, influence of manufacturing processes, influence of roughness - size - stress gradients - residual stresses, fatigue life calculation concepts, Local Strain Approach, Nominal Stress Concept, Notch Stress Concept, Fracture Mechanics Concepts, Assessment and reliability of fatigue life calculation methods.
Educational Material Types
  • Notes
  • Slide presentations
  • Book
Course Organization
Reading Assigment25
Student Assessment
Student Assessment methods
  • Written Assignment (Summative)
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