ema6580-spring-2009-exam1

ema6580-spring-2009-exam1 - SCIENCE OF BIOMATERIALS –...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: SCIENCE OF BIOMATERIALS – Spring 2009 STUDENT UFID#:______________________ EMA 6580 - EXAM 1 (use the NEW UF ID No.) INSTRUCTIONS: Read the entire exam carefully. Answer every question to the best of your ability, based upon the available information. State all assumptions you use in answers. Section I: General Applications/Characteristics of Biomaterials. Give short answers to each question below. (24 pts) 1. Materials used in total hip arthoplasty. 2. Materials used in catheters. 3. Materials used in IOLs 4. Three energies of materials that control properties 5. Two forms of stainless steel alloys 6. Polymerization process that eliminates water. 7. Two different polymer change morphologies 8. Austenitic versus Martensitic 9. Materials used in heart valves – at least two. 10. Materials used in bone cements 11. Modulus of steel versus modulus of UHMWPE in acetabular cup 12. Bonding in CoCr alloys versus Bonding in PET SCIENCE OF BIOMATERIALS- Spring 2009 EMA 6580 - EXAM 1 2 Section II: Concepts. Answer the following statements with TRUE or FALSE . If the statement is false, state the reason(s). If you believe a statement can be made TRUE by a simple qualifier, then state it clearly. (Normally only a single word change is required.) (12 pts) 13. The difference between the infinite stress at break versus the stress at break for a given molar mass is directly proportional to the molar mass. 14. The modulus of an austenitic stainless steel increases with the heat applied and time at heat. 15. XPS is used typically to probe the chemical structure of polymeric materials to a depth of 1 micron. 16. The AFM scanning of a surface induces a potential force displacement proportional to the probe position on the material.. 17. Grain orientation is increased with annealing of austenitic steels such as 316L after work hardening. 18. The propagation step of an addition polymerization results in the combination of two radicals at the ends of polymer chains. SCIENCE OF BIOMATERIALS- Spring 2009 EMA 6580 - EXAM 1 3 Section III: Graphical Relationships. 1. Each plot should be represented as a linear function if possible through algebraic manipulation. 2. You must select and show all equations used to create the plot. 3. Label all axes appropriately, i.e., provide units and orders of magnitude. 4. STATE ALL ASSUMPTIONS required. 19. Surface energy of water on a solid surface versus the surface energy of the solid (Hint: Young’s Equation) (2pts) 20. Stress of a swollen elastomer as a function of the shear modulus. (2pts) SCIENCE OF BIOMATERIALS- Spring 2009 EMA 6580 - EXAM 1 4 SECTION IV: Definitions/Concepts....
View Full Document

Page1 / 11

ema6580-spring-2009-exam1 - SCIENCE OF BIOMATERIALS –...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online