Machine Design Part I
Georgia Institute of Technology
About this Course
“Machine Design Part I” is the first course in an in-depth three course series of “Machine Design.” The “Machine Design” Coursera series covers fundamental mechanical design topics, such as static and fatigue failure theories, the analysis of shafts, fasteners, and gears, and the design of mechanical systems such as gearboxes. Throughout this series of courses we will examine a number of exciting design case studies, including the material selection of a total hip implant, the design and testing of the wing on the 777 aircraft, and the impact of dynamic loads on the design of an bolted pressure vessel.
In this first course, you will learn robust analysis techniques to predict and validate design performance and life. We will start by reviewing critical material properties in design, such as stress, strength, and the coefficient of thermal expansion. We then transition into static failure theories such as von Mises theory, which can be utilized to prevent failure in static loading applications such as the beams in bridges. Finally, we will learn fatigue failure criteria for designs with dynamic loads, such as the input shaft in the transmission of a car.
Skills you will gain
Mechanical DesignProblem SolvingEngineering DesignComponent Design
Syllabus - What you will learn from this course
1
Section
Material Properties in Design
In this week, we will first provide an overview on the course's content, targeted audiences, the instructor's professional background, and tips to succeed in this course. Then we will cover critical material properties in design, such as strength, modulus of elasticity, and the coefficient of thermal expansion. A case study examining material selection in a Zimmer orthopedic hip implant will demonstrate the real life design applications of these material properties. At the end of the week you will have the opportunity to check your own knowledge of these fundamental material properties by taking Quiz 1 "Material Properties in Design."
11 videos (Total 93 min), 4 readings, 2 quizzes
11 videos
Module 2: How to Succeed in this Course6m
Module 3: Strength7m
Module 4: Modulus of Elasticity - Introduction7m
Module 5: Modulus of Elastricity - Applications8m
Module 6: Ashby Plots7m
Module 7: Material Selection in Hip Implant12m
Module 8: Common Metals in Design9m
Module 9: Metal Designations and Processing9m
Module 10: Temperature Effects and Creep9m
Module 11: CTE mismatch12m
4 readings
Syllabus10m
Consent Form10m
Total Hip Replacement Surgical Process:10m
Get More from Georgia Tech10m
2 practice exercises
Complete prior to Module 4 - Modulus of Elasticity30m
Material Properties in Design0m
2
Section
Static Failure Theories - Part I
In week 2, we will review stress, strength, and the factory of safety. Specifically, we will review axial, torsional, bending, and transverse shear stresses. Please note that these modules are intended for review- students should already be familiar with these topics from their previous solid mechanics, mechanics of materials, or deformable bodies course. For each topic this week, be sure to refresh your analysis skills by working through worksheets 2, 3, 4 and 5. There is no quiz for this week.
8 videos (Total 63 min), 10 readings, 1 quiz
8 videos
Module 13: Factor of Safety Example5m
Module 14: Axial and Torsional Stress Review8m
Module 15: Axial, and Torsional Stress Example6m
Module 16: Bending Stress Review6m
Module 17: Bending Stress Example9m
Module 18: Transverse Shear Review7m
Module 19: Transverse Shear Example7m
10 readings
Tip for Units 2 and 3: Equation Sheet10m
Example Problem Module 12 : Factor of Safety0m
Solution Module 13: Factor of Safety10m
Example Problem Module 14: Axial and Torsional Stress0m
Solution Module 15: Axial and Torsional Stress10m
Example Problem Module 16: Bending Stress0m
Solution Module 17: Bending Stress10m
Example Problem Module 18: Transverse Shear0m
Solution Module 19: Tranverse Shear10m
Earn a Georgia Tech Certificate/Badge/CEUs10m
1 practice exercises
Pre-Quiz: Static Loading12m
3
Section
Static Failure Theories - Part II
In this week we will first cover the ductile to brittle transition temperature and stress concentration factors. Then, we will learn two critical static failure theories; the Distortion Energy Theory and Brittle Coulomb-Mohr Theory. A case study featuring the ultimate load testing of the Boeing 777 will highlight the importance of analysis and validation. Be sure to work through worksheets 6, 7, 8 and 9 to self-check your understanding of the course materials. At the end of this week, you will take Quiz 2 “Static Failure.”
9 videos (Total 81 min), 12 readings, 1 quiz
9 videos
Module 21: Stress Concentration Factors11m
Module 22: Static Failure Theories7m
Module 23: Distortion Energy Theory (von Mises Theory)7m
Module 24: Simple Example Distortion Energy Theory9m
Module 25: Complex Example Distortion Energy Theory10m
Module 26: Case Study - Static Load Analysis7m
Module 27: Brittle Coulomb Mohr Theory9m
Module 28: Brittle Coulomb Mohr Theory Example8m
12 readings
Worksheet 2: Stress Concentration Factor Practice Problems0m
Worksheet 2 Solution10m
Example Problem Module 2410m
Solution Module 25: Complex Example Distortion Energy Theory10m
Worksheet 3: Practice Problems: Distortion Energy Theory0m
Worksheet 3 Solution10m
Example Problem Module 27 Coulomb Mohr Theory0m
Solution Module 28: Brittle Coulomb Mohr Theory10m
Worksheet 4: Practice Problems: Coulomb Mohr Theory0m
Worksheet 4 Solution10m
Tips for preparing for Quiz 210m
Quiz 2 Solution10m
1 practice exercises
Static Failure0m
4
Section
Fatigue Failure - Part I
In week 4, we will introduce critical fatigue principles, starting with fully revisable stresses and the SN Curve. Then, we discuss how to estimate a fully adjusted endurance limit. Finally, a case study covering the root cause analysis of the fatigue failure of the Aloha Airlines flight 293 will emphasize the dangers of fatigue failure. In this week, you should complete worksheets 10, 11 and 12 as well as Quiz 3 “Fully Reversed Loading in Fatigue.”
8 videos (Total 70 min), 10 readings, 1 quiz
8 videos
Module 30: Fatigue and the SN Curve10m
Module 31: Approximating the SN Curve8m
Module 32: Estimating the Endurance Limit12m
Module 33: Estimating the Endurance Limit - Example Problem6m
Module 34: Fatigue Stress Concentration Factors Part I8m
Module 35: Fatigue Stress Concentration Factors Part II5m
Module 36: Fatigue Fully Reversed Loading Example9m
10 readings
Worksheet 5: SN Curve Practice Problem0m
Worksheet 5 Solution10m
Example Problem Module 32: Estimating Endurance Limit10m
Solution Module 33: Estimating the Endurance Limit10m
Worksheet 6: Endurance Limit Practice Problem0m
Worksheet 6 Solution10m
Worksheet 7: Fully Reversed Loading in Fatigue Practice Problems0m
Worksheet 7 Solution10m
Tips for preparing for Quiz 310m
Quiz 3 Solution10m
1 practice exercises
Fully Reversed Loading in Fatigue0m
5
Section
Fatigue Failure - Part II
In this last week of the course, we will cover the fatigue failure criteria for fluctuating and randomly varying stresses, including key concepts such as the Modified Goodman line and Miner’s Rule. This week be sure to complete worksheets 13 and 14 as well as Quiz 4 “Fluctuating Fatigue and Miner’s Rule.” Finally, take Quiz 5, “The Comprehensive Quiz”, which will measure your overall knowledge of this course.
8 videos (Total 75 min), 10 readings, 2 quizzes
8 videos
Module 38: Fatigue Fluctuating Stress8m
Module 39: Fatigue Goodman Diagram8m
Module 40: Fatigue Goodman Diagram Example7m
Module 41: Fatigue Goodman Diagram Example (Life)8m
Module 42: Randomly Varying Stresses and Miner's Rule9m
Module 43: Randomly Varying Stresses and Miner's Rule Example 110m
Module 44: Randomly Varying Stresses and Miner's Rule Example 25m
10 readings
Example Problem Module 3910m
Solution Module 4010m
Worksheet 8: Fluctuating Loading in Fatigue0m
Worksheet 8 Solution10m
Example Problem Module 4210m
Solution: Example Problem Module 4310m
Worksheet 9: Miner's Rule0m
Worksheet 9 Solution10m
Quiz 4 Solution10m
Quiz 5 Solution10m
2 practice exercises
Fluctuating Fatigue and Miner’s Rule0m
Machine Design Part 1: Comprehensive Exam0m
4.8
83%
43%
Top Reviews
By ZZ•Feb 17th 2017
The course was a concise and effective review of major concepts. The concepts were well explained and the lessons practical. I have a better understanding of fatigue failure as a result of this class.
By SG•Jun 12th 2017
Thank you so much. I liked your teaching style.You gave me a clear understanding about each and every topic covered in this course.I enjoyed the learning.Hope we will be in touch for further courses.
Instructor
Dr. Kathryn Wingate
Academic ProfessionalAbout Georgia Institute of Technology
The Georgia Institute of Technology is one of the nation's top research universities, distinguished by its commitment to improving the human condition through advanced science and technology.
Georgia Tech's campus occupies 400 acres in the heart of the city of Atlanta, where more than 20,000 undergraduate and graduate students receive a focused, technologically based education.
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