EGR 103

1
EGR 103

• Get to know each other
• Introduction to EGR 103
• Syllabus
• Schedule
• HW Format
• Class Culture
• Start

2
About Me

• Dr. Nael Barakat, P. Eng.
• B.S. Mechanical Engineering
• M.S. Mechanical Engineering
• Ph.D. Mechanical Engineering
• Interest
• Robotics
• Control Systems
• Metrology
• Ethics and Professionalism

3
Syllabus

• Contact
• Text Reference
• Mechanics
• Attendance, Academic Honesty
• Grading Rubrics
• Special Needs

4
Schedule

• Lectures
• 14 lecture sessions
• Exams
• 4 in-class exams and a final exam
• Homework
• 7 Homework

5
Homework Format

• Neatness and formatted
• Paraphrase
• Objective
• Assumptions
• Analysis

6
Class Culture

• Cooperative team work
• Mutual respect
• Trust
• On time
• Having fun

7
START

• Why measure?
• Two types direct and indirect
• Chapter 1
• Product Variability
• Fundamentals and Basic issues
• Direct Measurement
• Organizing, Presenting and Summarizing Data

8
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

Any characteristics of a product will
vary Variability must be understood to Control,
and Reduce if possible Excessive variability may
affect functions or cause assembling
problems Hence we measure
9
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

Measurand the object, which is measured Direct
Measurement The gage directly measures the
characteristics of interest Accuracy correctness
of the measurement Precision exactness or
detail of the measurement, coming from the
measuring device Two conventions in reporting a
measurement Report to the minimum scale
division Estimate one more digit
10
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

• Determining Number of significant digits
• Addition and Multiplication/Division Rule for
  correct Number of significant digits
• Unambiguous Reporting
• Only for reporting purpose NOT for subsequent
  computations

11
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

• This is the quantity of uncertainty built into
  the measurement because of the precision of the
  instrument
• Precision is the smallest measurement the device
  can take
• Uncertainty is ½Precision
• Relative Uncertainty is the uncertainty in the
  measured quantity

12
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

• Vernier Constant
• How to compute the constant
• How to read the calipers on hand

13
TOPICS

• Product Variability
• Fundamentals
• Significant Digits
• Uncertainty
• Vernier Calipers
• Frequency Table

• Frequency table Content
• Understanding notations
• Computations of table contents from raw
  measurements

14
TOPICS

• Homework
• Due On 01/14
• Posted in B B
• Laboratory
• Current Week
• MS office
• Tutorials in the Appendix
• Next Week
• Presentation on Technical Report writing