Introduction to design concepts, historical background of fracture mechanics, Griffith's crack theory, perfect brittle behavior; energy balance of an elastic material with a crack, constant load and constant displacement cases; energy release rate vs fracture resistance, small scale yielding, small scale damage; stress field in front of a crack, intrinsic brittle behavior, the Rice-Thomson condition; plasticity under small scale yielding conditions, the mode III casePlasticity under cyclic loading, the Rice superposition principle, experimental verification of the plastic deformation; determination of linear elastic fracture mechanics parameters, toughness, fatigue crack propagation behavior, short cracks; stress corrosion cracking and stress corrosion fatigue; the Kitagawa-Takahashi-diagram, its meaning and a comparison of various materials; limits of linear elastic fracture mechanics, effect of size on fracture toughness; elasto-plastic fracture mechanics and its parameters, critical tip-opening displacement; the J-integral, definition and physical interpretation, the HRR-field; experimental determination of the J-integral, effects of specimen size, elastoplastic design conceptsThe C*-integral, creep fracture mechanics
Vortragende/r:
R. Pippan
MUonline:
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