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This concerns a Course |
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In the program of MSc
MSE and
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EC (European Credits): 3 (1 EC concerns a work load of 28 hours) |
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Faculty of Mechanical, Maritime and Materials
Engineering |
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Department of MSE |
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Lecturer 1: M. Janssen |
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Lecturer 2: |
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Catalog data:
crack
growth, fracture toughness,
fatigue, environmentally assisted cracking, creep, mechanical properties |
Course year: |
MSc 1st
year |
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Course language: |
English |
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In case of
Dutch: Please contact the
lecturer about an English alternative, whenever needed. |
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Semester: |
2A |
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Hours per week: |
4 |
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Other hours: |
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Assessment: |
Written exam |
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Assessment period: |
2A / August |
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(see academic
calendar) |
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Prerequisites (course codes): |
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Follow up (course codes): |
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Detailed description of topics:
- Stable
Crack Growth: R-curve concept, R-curve determination, J-R curve
- Fracture Toughness: Ductile and
brittle fracture, Microstructural aspects of
fracture toughness
- Fatigue: Fatigue crack growth, Fatigue
crack initiation
- Environmentally Assisted Cracking:
Mechanisms in metals and polymers, Test methods
- Creep: Creep in crystalline solids,
Creep fracture in metals |
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Course material: |
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References from literature: |
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Remarks assessment, entry requirements,
etc.: |
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Learning goals:
The student is able to identify a number of common mechanical phenomena
that cause material failure in terms of the mechanisms that underly these
phenomena and the conditions for which such behaviour can be expected.
Moreover for a number
of phenomena the student can identify experimental techniques for determining
material behaviour and / or can make simple failure predictions.
More specifically, the
student is able to:
1. explain the rising R-curve concept and the
methods for R-curve determination
2. compute the maximum amount of stable crack
growth and the critical K, G or J value
3. distinguish the microstructural aspects of
brittle and ductile fracture mechanisms
4. identify the principal toughening
mechanisms in metals, ceramics and polymers
5. explain the effect of anisotropy on
toughness
6. explain the effect on toughness of the
cleanliness of a number of specific metal alloys
7. illustrate effective toughening strategies
for a number of ferrous alloys, non-ferrous alloys, ceramics,
polymers and composites
8. identify the effects of delta K and load
ratio (crack closure) on fatigue crack growth rate
9. predict fatigue lifetime for constant
amplitude loading
10. illustrate the
effect of peak loads on fatigue crack growth rate
11. explain methods to
predict fatigue lifetime under variable amplitude loading
12. describe the
relation between the fatigue limit and the fatigue threshold
13. describe the effect
of notches on the growth of short fatigue cracks
14. describe the square
root area parameter model for predicting fatigue limits
15. list the principle
models for environmentally assisted cracking of metals
16. illustrate the
mechanisms for physical and chemical environmentally assisted cracking in
polymers
17. explain the
principle of time-to-failure testing of environmentally assisted cracking
18. explain crack
growth rate testing of environmentally assisted cracking and identify
experimental pitfalls
19. calculate lifetime
of environmentally assisted cracking under constant load
20. indicate the
practical significances of the threshold stress intensity and growth rate
data for environmentally
assisted cracking
21. select the relevant
experimental data and use this to calculate a creep activation energy
22. identify the
different mechanisms by which creep can occur in crystalline solids,
including the conditions that
lead to this creep
23. explain the
conditions for which superplastic deformation can occur
24. explain the
principle and the use of deformation mechanism maps
25. perform
extrapolations of creep rupture data |
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Computer use: |
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Laboratory project(s): |
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Design content: |
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