OLD_Fall2005_biomaterials_exam

OLD_Fall2005_biomaterials_exam - YOUR NAME:_ FALL 2005 EBME...

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YOUR NAME:________________________________________________________________ FALL 2005 EBME 105 Exam #4 Biomaterials December 9, 2005 You must work alone during exams. All exams will be in class and closed-book (no books, notes, class handouts, or other papers). Calculators may be used during exams. All programmable calculators must be cleared of programs before entering the examination room. All memories, registers, or other means of storing alphanumerical information in any calculator must be cleared before entering the examination room. During the exam, discussion or communication with others is forbidden (except the instructors or teaching assistants). Both the student who provides information and the student who receives information during an exam are guilty of unethical conduct. No books, notes, class handouts, or other papers are allowed. Short essay questions are listed at the end of the exam. Your answers should be brief. Use your time effectively. Best wishes during final exams and the holidays. We’ll look forward to seeing you in EBME201 next year!
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YOUR NAME:________________________________________________________________ 1. (8 points) Due to an unusual gait (walking motion), a young boy places an unusual load on his femur, which produces stresses on either side of his femur (Figure 1). Draw the expected shape of the bone after this load is applied for many years. Use Figure 2 as a template. You may draw directly on Figure 2, using the dotted line as a guide. BE VERY SPECIFIC AND EXACT in your drawing. Medial Lateral Compressive Stress (C) 8 9 ~ 13 Tensile Stress (T) 1 ~ 6 15 ~ 16 Figure 1 Figure 2. The dotted line represents the original shape of the bone
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YOUR NAME:________________________________________________________________ Westernemer Casemer Reservemer Strain Stress Figure 3. Stress-Strain relationships of several polymers 2. (16 points) According to Figure 3, which polymer: A) has the highest plasticity?__________ _ Westernemer ______ _ ______________ B) has the greatest yield strength?___________ Casemer _ ____________________________ C) is the most brittle?______________________ Casemer __ ___________________________ D) has the greatest resiliency?_______________ Reservemer _ __________________________ E) is the toughest material?_________________ Westernemer _ _________________________ F) has the greatest fracture strength?_________ Casemer
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OLD_Fall2005_biomaterials_exam - YOUR NAME:_ FALL 2005 EBME...

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