À propos de ce cours : We explore “10 things” that range from the menu of materials available to engineers in their profession to the many mechanical and electrical properties of materials important to their use in various engineering fields. We also discuss the principles behind the manufacturing of those materials. By the end of the course, you will be able to: * Recognize the important aspects of the materials used in modern engineering applications, * Explain the underlying principle of materials science: “structure leads to properties,” * Identify the role of thermally activated processes in many of these important “things” – as illustrated by the Arrhenius relationship. * Relate each of these topics to issues that have arisen (or potentially could arise) in your life and work. If you would like to explore the topic in more depth you may purchase Dr. Shackelford's Textbook: J.F. Shackelford, Introduction to Materials Science for Engineers, Eighth Edition, Pearson Prentice-Hall, Upper Saddle River, NJ, 2015
Les destinataires de ce cours : "A MUST COURSE FOR BUDDING MATERIAL ENGINEERS/ MATERIAL SCIENTISTS!! Professor Shackelford is so awesome!! The way he taught the course helped me grasp the fundamentals of material science better than any that taught me during my four year bachelor tenure in Material engineering." ~Course Completer
Créé par : University of California, Davis
Enseigné par : James Shackelford, Distinguished Professor Emeritus
Department of Chemical Engineering and Materials Science
| Engagement | 5 weeks, 3 hours per week |
| Langue | English |
| Comment réussir | Réussissez tous les devoirs notés pour terminer le cours. |
| Notes des utilisateurs |
Programme de cours
SEMAINE 1
Course Overview / The Menu of Materials / Point Defects Explain Solid State Diffusion
Welcome to week 1! In lesson one, you will learn to recognize the six categories of engineering materials through examples from everyday life, and we’ll discuss how the structure of those materials leads to their properties. Lesson two explores how point defects explain solid state diffusion. We will illustrate crystallography – the atomic-scale arrangement of atoms that we can see with the electron microscope. We will also describe the Arrhenius Relationship, and apply it to the number of vacancies in a crystal. We’ll finish by discussing how point defects facilitate solid state diffusion, and applying the Arrhenius Relationship to solid state diffusion.
10 vidéos
- Vidéo: Six Categories of Engineering Materials
- Vidéo: Structure Leads to Properties
- Vidéo: Summary
- Vidéo: Crystallography and the Electron Microscope
- Vidéo: Introduction to the Arrhenius Relationship
- Vidéo: The Arrhenius Relationship Applied to the Number of Vacancies in a Crystal
- Vidéo: Point Defects and Solid State Diffusion
- Vidéo: The Arrhenius Relationship Applied to Solid State Diffusion
- Vidéo: Summary
Noté: Thing 1
Noté: Thing 2
SEMAINE 2
Dislocations Explain Plastic Deformation / Stress vs. Strain -The “Big Four” Mechanical Properties
Welcome to week 2! In lesson three we will discover how dislocations at the atomic-level structure of materials explain plastic (permanent) deformation. You will learn to define a linear defect and see how materials deform through dislocation motion. Lesson four compares stress versus strain, and introduces the “Big Four” mechanical properties of elasticity, yield strength, tensile strength, and ductility. You’ll assess what happens beyond the tensile strength of an object. And you’ll learn about a fifth important property – toughness.
10 vidéos
- Vidéo: Plastic Deformation by Dislocation Motion
- Vidéo: Summary
- Vidéo: The Stress versus Strain (Tensile) Test
- Vidéo: The “Big Four” Mechanical Properties
- Vidéo: Focusing on Strength and Stiffness
- Vidéo: Beyond the Tensile Strength
- Vidéo: Focusing on Ductility
- Vidéo: A Fifth Parameter – Toughness
- Vidéo: Summary
Noté: Thing 3
Noté: Thing 4
SEMAINE 3
Creep Deformation / The Ductile-to-Brittle Transition
Welcome to week 3! In lesson five we’ll explore creep deformation and learn to analyze a creep curve. We’ll apply the Arrhenius Relationship to creep deformation and identify the mechanisms of creep deformation. In lesson six we find that the phenomenon of ductile-to-brittle transition is related to a particular crystal structure (the body-centered cubic). We’ll also learn to plot the ductile-to-brittle transition for further analysis.
8 vidéos
- Vidéo: The Creep Curve
- Vidéo: Creep Deformation and the Arrhenius Relationship
- Vidéo: Mechanisms for Creep Deformation
- Vidéo: Summary
- Vidéo: The Ductile-to-Brittle Transition and Crystal Structure
- Vidéo: Plotting the Ductile-to-Brittle Transition
- Vidéo: Summary
Noté: Thing 5
Noté: Thing 6
SEMAINE 4
Fracture Toughness / Fatigue
Welcome to week 4! In lesson seven we will examine the concept of critical flaws. We’ll define fracture toughness and critical flaw size with the design plot. We’ll also distinguish how we break things in good and bad ways. Lesson eight explores the concept of fatigue in engineering materials. We’ll define fatigue and examine the fatigue curve and fatigue strength. We’ll also identify mechanisms of fatigue.
10 vidéos
- Vidéo: Fracture Toughness and the Design Plot
- Vidéo: Critical Flaw Size and the Design Plot
- Vidéo: A Play of Good versus Evil!
- Vidéo: Summary
- Vidéo: Introduction to Fatigue
- Vidéo: Defining Fatigue
- Vidéo: The Fatigue Curve and Fatigue Strength
- Vidéo: Mechanism of Fatigue
- Vidéo: Summary
Noté: Thing 7
Noté: Thing 8
SEMAINE 5
Making Things Fast and Slow / A Brief History of Semiconductors
Welcome to week 5! In lesson nine we’ll deal with how to make things fast and slow. We’ll examine the lead-tin phase diagram and look at its practical applications as an example of making something slowly. Then we’ll evaluate the TTT diagram for eutectoid steel, and compare diffusional to diffusionless transformations with the TTT diagram, monitoring how we make things rapidly. Lesson ten is a brief history of semiconductors. Here, we discuss the role of semiconductor materials in the modern electronics industry. Our friend Arrhenius is back again, and this time we’re applying the Arrhenius Relationship to both intrinsic and extrinsic semiconductors. We’ll also look at combined intrinsic and extrinsic behavior.
12 vidéos
- Vidéo: The Lead-Tin Phase Diagram
- Vidéo: The Competition Between Instability and Diffusion
- Vidéo: The TTT Diagram for Eutectoid Steel
- Vidéo: Diffusional Transformations
- Vidéo: Diffusionless Transformations
- Vidéo: Summary
- Vidéo: A Brief History
- Vidéo: The Intrinsic Semiconductor
- Vidéo: The Extrinsic Semiconductor
- Vidéo: Combined Intrinsic and Extrinsic Behavior
- Vidéo: Summary
Noté: Thing 9
Noté: Thing 10
Noté: Ten Things Final
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Créateurs
University of California, Davis
UC Davis, one of the nation’s top-ranked research universities, is a global leader in agriculture, veterinary medicine, sustainability, environmental and biological sciences, and technology. With four colleges and six professional schools, UC Davis and its students and alumni are known for their academic excellence, meaningful public service and profound international impact.
Notation et examens
A nice 'refreshing the knowledge' course if you have prior idea of the subject else it is very introductory, not at all for advanced learners.
Thanks for explaining the subject in very simple manner.
Good course to refresh what was learned in college
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VN
Good topic to learn for mechanical enginners