Quiz_1_Form_A_MSE_3005_SP2021[1]

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School

Georgia Institute Of Technology *

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Course

3005

Subject

Mechanical Engineering

Date

Apr 3, 2024

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pdf

Pages

2

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MSE 3005 Mechanical Behavior of Materials Spring 2021 Quiz #1 – (25 Points Total) Version A Page 1 of 2 Please carefully read the following statement about your responsibilities for the quiz administration and the Georgia Tech Honor Code. Your submission of the quiz via gradescope will be used as your acknowledgement and certification that you will adhere to the Honor Code: I will adhere to the Georgia Tech Honor Code when self-administering this exam. I will give myself 10 minutes to take the quiz, and will then immediately submit my answers via gradescope. If have a GT-authorized accommodation I will administer the quiz consistent with those arrangements (e.g., additional time or other resources. I will complete the quiz on my own, without input from others (in the class or the web). The quiz is closed to all reference materials. A commercial calculator and a straight edge can be used on this quiz. I will not discuss the quiz with other students until I am notified that everyone has completed the quiz. Name (printed): ________________________________ GT SID#: ____________________________ Name (signature): _______________________________ 1. (10 Points) Draw a face-centered cubic unit cell. Be sure to label the axes so that the shape of the lattice is unambiguous, as well as the atom locations. Draw and label a 0 1 1 within the unit cell. What are the Miller indices of the family of close packed directions in the unit cell? 2. (5 Points). Consider a biaxial stress state where 11 = 200 MPa, 22 = 25 MPa, and 12 = 25 MPa. Calculate the maximum shear stress, 12max .
MSE 3005 Mechanical Behavior of Materials Spring 2021 Quiz #1 – (25 Points Total) Version A Page 2 of 2 3. (10 Points) You have been asked to test a cylindrical tensile specimen that has a diameter of 5 mm and a gage length of 25 mm. The specimen is made of a polycrystalline aluminum alloy (elastic modulus, E , of 69 GPa and an Poisson’s ratio, , of 0.27). Calculate the gage length of the specimen when it is loaded to its proportional limit limit if the yield strength of the alloy is 250 MPa.
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