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EGR 103

EGR 103. Get to know each other Introduction to EGR 103 Syllabus Schedule HW Format Class Culture Start. About Me. Dr. Nael Barakat, P. Eng. B.S. – Mechanical Engineering M.S. – Mechanical Engineering Ph.D. – Mechanical Engineering Interest Robotics Control Systems Metrology

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EGR 103

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  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 ½*Precision • 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

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