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| 1. |
The normal strain ε is defined as the ratio of lenght to the initial length |
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| 2. |
The longitudinal elastic modulus (or Young's modulus) is defined as the ratio of strain to stress: E = ε/σ |
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| 3. |
The Poisson's ratio is defined as the ratio between the transversal strain and the
longitudinal strain |
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| 4. |
A force is a vector quantity, which means that it has both a magnitude and a direction associated with it |
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| 5. |
Velocity is expressed in GPa |
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| 6. |
Normal stress σ is defined as the ratio of the normal force to the cross-sectional area A: σ = F/A |
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| 7. |
Cortical bone is an homogeneous material |
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| 8. |
Bone trabecules orientation is influenced by physiological loads |
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| 9. |
Bone adapts and remodels its structure in response to applied stress |
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| 10. |
Cortical bone is an orthotropic material |
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| 11. |
Bone resorption and deposition are always in equilibrium |
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| 12. |
Aging does not affect the mechanical properties of bone |
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| 13. |
Bone is formed by organic and mineral phases |
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| 14. |
Titanium is a biomaterial, chemically compatible with the biological environment |
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| 15. |
The Young's modulus of the Titanium is about 100÷110 GPa |
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| 16. |
Finite element methods is a procedure for investigating the mechanical behaviour of structures |
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| 17. |
Cortical and trabecular bone has the same Young's modulus |
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| 18. |
In numerical modelling of implants the morphometry of the anatomical site can be obtained starting from tomographic data |
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| 19. |
In finite element analysis of bone-implant systems axial symmetrical models can give preliminary information in case of intrusive loads only |
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| 20. |
Cortical thickness affects the mechanical response of the bone-implant system |
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| 21. |
The bone-implant compound has the same functional response in case of osseointegration and in case of implant detachment |
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| 22. |
The Control Volume Method (CVM) in casting process analysis can predict the presence of possible defects in the cast |
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| 23. |
The presence of micro-porosity in Titanium cast is independent of the solidification time |
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| 24. |
Micro-porosity does not influence the mechanical properties of the Titanium cast |
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| 25. |
In Titanium casting the velocity field of the mould affects the feeding of the cast |
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