ENGR 220 Ch03_ppt_Callister8e_RK_Part_1

ENGR 220 Ch03_ppt_Callister8e_RK_Part_1 - Ch 3 The...

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9/28/11 1 Chapter 3 - 1 ISSUES TO ADDRESS... ± How do atoms assemble into solid structures? (initial focus on metals ) ± How does the density of a material depend on its structure? ± When do material properties vary with the sample (i.e., part) orientation? Ch. 3: The Structure of Crystalline Solids Chapter 3 - 2 ANNOUNCEMENTS - 1 ± Reading: Chapter 3: all sections except 3.8-3.11, 3.15 and 3.16. ± Midterm #1: Week 4: Tuesday, 10/11/11, 8:00-8:50 am, Main Auditorium Accommodations: LeBow 348, 8:00-10:30 am ± TA Help Session: ± Thu, October 6, 5:00 - ~7:30 pm, CAT 061 ± Week 3 Recitations: Hand in #’s 2.14 & 2.20 (Counts as Quiz 1) Team Project - Unit Cell Building (read ahead for NaCl, Diamond Cubic etc.) Problem Set #2: Chapter 3, #s 3.4, 3.5, 3.8, 3.9 & 3.14
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9/28/11 2 Chapter 3 - 3 Here are the rules for the in-recitation Unit Cell building project: Each group will build ONE of the following unit cells: SC, BCC, FCC, HCP, NaCl, Diamond Cubic/Zinc Blende (ZnS) You need to understand/demonstrate the relationship between the following pairs: BCC and CsCl; Diamond Cubic and ZnS In Week 3 each group/team will build and present their assigned unit cell. There will be 6 groups , so each will get ONE unit cell. “Present” means explaining to the rest of the class: i. How many atoms per unit cell ii. Which atoms touch, and where iii. The relationship between a and r Scoring/grading will be based on team voting ballots that will be given out and collected in Week 3 recitations. It will be a
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