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
教学大纲 - 您将从这门课程中学到什么
周
1完成时间为 1 小时
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 个视频 （总计 41 分钟）, 2 个测验
10 个视频
Six Categories of Engineering Materials8分钟
Structure Leads to Properties5分钟
Summary2分钟
Crystallography and the Electron Microscope6分钟
Introduction to the Arrhenius Relationship5分钟
The Arrhenius Relationship Applied to the Number of Vacancies in a Crystal4分钟
Point Defects and Solid State Diffusion3分钟
The Arrhenius Relationship Applied to Solid State Diffusion2分钟
Summary36
2 个练习
Thing 110分钟
Thing 224分钟
周
2完成时间为 1 小时
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 个视频 （总计 34 分钟）, 2 个测验
10 个视频
Plastic Deformation by Dislocation Motion8分钟
Summary13
The Stress versus Strain (Tensile) Test3分钟
The “Big Four” Mechanical Properties3分钟
Focusing on Strength and Stiffness4分钟
Beyond the Tensile Strength4分钟
Focusing on Ductility1分钟
A Fifth Parameter – Toughness2分钟
Summary1分钟
2 个练习
Thing 38分钟
Thing 416分钟
周
3完成时间为 1 小时
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 个视频 （总计 34 分钟）, 2 个测验
8 个视频
The Creep Curve5分钟
Creep Deformation and the Arrhenius Relationship8分钟
Mechanisms for Creep Deformation3分钟
Summary1分钟
The Ductile-to-Brittle Transition and Crystal Structure7分钟
Plotting the Ductile-to-Brittle Transition5分钟
Summary1分钟
2 个练习
Thing 516分钟
Thing 68分钟
周
4完成时间为 1 小时
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 个视频 （总计 43 分钟）, 2 个测验
10 个视频
Fracture Toughness and the Design Plot8分钟
Critical Flaw Size and the Design Plot5分钟
A Play of Good versus Evil!4分钟
Summary33
Introduction to Fatigue1分钟
Defining Fatigue6分钟
The Fatigue Curve and Fatigue Strength5分钟
Mechanism of Fatigue5分钟
Summary1分钟
2 个练习
Thing 718分钟
Thing 812分钟
4.6
235 个审阅27%
完成这些课程后已开始新的职业生涯
15%
通过此课程获得实实在在的工作福利
热门审阅
This course is good for engineers. It illustrated many fundemental and important concept in materials science. The teacher is great who explain nearly everthings in details with words and experiments.
This course was alot more educational then I thought it would be but now I compare what has shaped me in in life to creep deformation. I especially loved the lecture " a play on good and evil".
讲师
James Shackelford
Distinguished Professor EmeritusDepartment of Chemical Engineering and Materials Science
关于 加州大学戴维斯分校
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.
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