3. The sketch below shows 3 co-planar parallel screw dislocations.

=Problem 6. Calculate the atomic packing factor of HCP structure. (hexagon dimensions c/a1.63) (10 points)

13. Draw the temperature profile for the multi-block configuration shown below. (5 Points)

The surface hardening process include: a) carburizing; b) forging; c) threading; d) nitriding; e)carbonitriding

5. De-twinning process for a Nitinol SMA actuator happens in: a. Austenite b. Martensitec. From Austenite to Martensite d. From Martensite to Alhite

P.1.5. A shear stress ty acts in a two-dimensional field in which the maximum allowable shear stress is denoted by Tmax and the major principal stress by o1. Derive, using the geometry of Mohr's circle of stress, expressions for the maximum values of direct stress which may be applied to the x and y planes in terms of these three parameters. \text { Answer: } \quad \sigma_{x}=\sigma_{I}-\tau_{\max }+\sqrt{\tau_{\max }^{2}-\tau_{x y}^{2}} \sigma_{y}=\sigma_{I}-\tau_{\max }-\sqrt{\tau_{\max }^{2}-\tau_{x y}^{2}}

Ceramic Processing Module – IN-PERSON Lab Dimensional Conformity & Measurement System Analysis Recitation Activities - discussion of dimensional variability, process capability, gage R&R -discussion of lab data collection and reporting Lab Activities Dimensional inspection part features for dimensional conformance is a key aspect of assuring that complex geometry components meet the required dimensional specifications. For a complex part such as an automotive engine block, it is not uncommon for more than 500 features and dimensional characteristics to be inspected to fully insure dimensional conformance. In lab selected features on sand cast, investment cast, and forged parts will be measured to determine manufacturing dimensional capability and process capability. In addition, features will be measured multiple times by multiple ‘inspectors’ to also assess measurement system repeatability and reproducibility (Gage R&R). *****These are key concepts*****Master them***** Measure the part feature size (in.) for the features indicated using hand-held digital calipers. (Use the measurement technique of your choice, but use the same measurement technique each time you measure a given feature.)

The structure description of a certain ceramic compound MaXb, where M is a cation and X an anion and a and b are integers, is as follows. - The anions form an FCC structure, and - the cations occupy all of the tetrahedral interstitial sites. Determine the ratio a/b, and plot schematically the structure of one unit cell for this compound (you need to mark your plotting clearly and give reasons whenever needed). What are the coordination numbers of the cation and anion, respectively?

Question 9. (a) What are the three major reactions that occur during chain polymerization? (b) What are two methods by which a linear chain polymerization reaction can be terminated?

Case Study on Wear Search for a component with wear on the surface. You have been requested for your professional opinion of the wear of this component, its characteristics, severity, type, and cause. 1. Describe the characteristics of the worn zone (Attach a picture of possible) 2. Indicate what type of wear it is. 3. Explain the reason for your judgement. Write this as a professional opinion; as if you were being paid for it. You want your customer to be happy with the quality of your opinion; so they will come to you with their next tribological problem.