General Readings on Stents & Biomaterials
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Technical Articles
Class 1 & 2: Overview of Biomaterials,
Crystal Structure
Read Callister 3.1-3.7, 3.12 and review the definitions for:
- crystal structure
- lattice
- unit cell
- FCC
- BCC
- close packed
Class 3: Defects
Read Callister 4.1-4.7 and review the definitions for:
- Vacancy
- Interstitial
- Self-interstitial
- Substitutional
- Edge dislocation
- grain boundary
Think about
- Give examples of point, line, and interfacial defects.
- What happens to the defect concentration at higher temperatures?
Class 4: Mechanical Properties
Read Callister 6.1-6.7 and think about
- Review the equations for stress, strain, and Hooke's Law
- Sketch a stress strain plot for a metal and define on the plot
- elastic and plastic regions
- Young's modulus
- Poisson's ratio
- yield stress
- tensile strength
- ductility
- What is the difference between engineering stress and true stress?
Class 5: Strengthening Mechanisms
Read Callister Ch 7 and think about
- What is slip?
- How does an edge dislocation move?
- What causes plastic deformation?
- Explain why ductility and tensile strength have opposite trends in Figure
7.20.
- Explain why grain size reduction, solid solution strengthening, and strain
hardening increase the tensile strength.
Class 6 & 7: Phase Diagrams
Read Callister 9.1-9.14
Review the definitions for
- Component
- Solubility limit
- Isomorphous
- Eutectic
- Eutectoid
- Solidus, liquidus, and solvus line
- Invariant point
- Congruent point
- Lever rule
Think about
- Using Figure 9.6, identify the equilibrium phases and their compositions
at various temperatures. Use the lever rule to determine the fraction of
each phase present
- Study the figures in section 9.11 and understand the microstructure as a
function of temperature
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