EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Exam review Introduction to Engineering Systems Lecture 11 (10/02/2009) Prof. Andrés Tovar

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Announcements (1/4) Congratulations on your performance on the Tower! –There were tough challenges. –This year was new for us. Thank you for “bearing with us” Limit States Met? –Experimentally or after correction, either way counts! –Team 1s will be contacted Friday afternoon K’nex kits –Return to Natalie. Use inventory sheet. Due Friday, Oct. 9 –You get a grade for this! Easy points. –Just report what you have in your kit so that she can restock it! 2Optimizing your design

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Announcements (2/4) Engineering process over outcome –Show your work in presentation and report –Show systematic decision making in tower design Rubric for Project 1 (15% of course grade) –40% Report –25% Presentation –25% Demonstration –10% Peer Evaluation 3

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Announcements (3/4) Report due Monday, Oct. 5, 8 AM –Drop off: Learning Center Section Tray on top of lockers –Sections: Cover sheet, Abstract, Results/Discussion, References –Body: 4 to 6 pages –All group members must sign the cover sheet (Agreement) –Grading Rubric comes straight from LC 6 document –Use the template of a good report 7 Minute Presentation next week –Post on I:\courses\eg\eg11111.xx\netid\dropbox –Bring a back up copy on USB Drive –Business Casual –Get to class early! –Not everyone has to speak. Practice! 4

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Announcements (4/4) Peer evaluations –CATME System: you should have created a password –Confidential evaluation / feedback –Oct 9 – Oct 15 –You will get an No homework this week Course Instructor Feedback (CIF) – –Oct 2 – Oct 9 5

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Exam – Module 1 When: Tue, Oct 6, 8 – 9:15 AM Where: Stepan Center Doors will open at 7:50 am to begin filling out scan sheets What to bring: –Student ID –Calculator (and a back up – cell phone doesn’t count) –Pencils –One page sheet of any information you want (8.5x11”) –No cell phones or other communication devices! Format: 30 multiple choice questions 6

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Exam – Module 1: Reading material Lectures posted on Concourse Learning Center guides Homework assignments Reference book –Sections 1.1, 1.2, and 1.4 –Chapters 4 and 5 –Chapters 9 and 10 All Matlab videos 7

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Exam – Module 1: Topics Matlab Statistics Probability F.O.S. Engineering Design Process Tower bracing and metrics Physics of Towers: Forces Measuring and error Line fit Sum of Squared Error Technical Communication Modeling Theoretical models (Newton's, etc) 8

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 9 Answer: c

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 10 Answer: d

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 1.Which of the plots is produced by the following MATLAB script: x=0:10; y=x.*x; c=polyfit(x,y,1); z=c(1)*x+c(2); plot(x,y,'*’); hold on plot(x,z,'--'); hold off a)Plot 1 b)Plot 2 c)Plot 3 d)Plot 4 e)The expression or statement is incorrect 11 Plot 1 Plot 2 Plot 3 Plot 4 Answer: a

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 12 Answer: c

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 13 Answer: b

EG 10111/10112 Introduction to Engineering Copyright © 2009 University of Notre Dame Example problem 1.Consider a sub-assembly of width 10 cm, depth 15 cm, and height 20 cm. If this sub-assembly is braced using two diagonal members in their external wall (see Figure) then its bracing ratio is a)250/600 b)424/600 c)50/70 d)1/2 e)5/ cm 15 cm 20 cm Answer: e