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
Materials Science: 10 Things Every Engineer Should Know
proposé par
Université de Californie à Davis
31,237 inscrit(s)
À propos de ce cours
13,032 consultations récentes
Compétences que vous acquerrez
MaterialsMechanical EngineeringEngineering DesignElectrical Engineering
Programme du cours : ce que vous apprendrez dans ce cours
Semaine
11 heures pour terminer
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 (Total 41 min), 2 quiz
10 vidéos
Course Introduction2 min
Six Categories of Engineering Materials8 min
Structure Leads to Properties5 min
Summary2 min
Crystallography and the Electron Microscope6 min
Introduction to the Arrhenius Relationship5 min
The Arrhenius Relationship Applied to the Number of Vacancies in a Crystal4 min
Point Defects and Solid State Diffusion3 min
The Arrhenius Relationship Applied to Solid State Diffusion2 min
Summary36s
2 exercices pour s'entraîner
Thing 110 min
Thing 224 min
Semaine
21 heures pour terminer
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 (Total 34 min), 2 quiz
10 vidéos
Plastic Deformation by Dislocation Motion8 min
Summary13s
The Stress versus Strain (Tensile) Test3 min
The “Big Four” Mechanical Properties3 min
Focusing on Strength and Stiffness4 min
Beyond the Tensile Strength4 min
Focusing on Ductility1 min
A Fifth Parameter – Toughness2 min
Summary1 min
2 exercices pour s'entraîner
Thing 38 min
Thing 416 min
Semaine
31 heures pour terminer
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 (Total 34 min), 2 quiz
8 vidéos
The Creep Curve5 min
Creep Deformation and the Arrhenius Relationship8 min
Mechanisms for Creep Deformation3 min
Summary1 min
The Ductile-to-Brittle Transition and Crystal Structure7 min
Plotting the Ductile-to-Brittle Transition5 min
Summary1 min
2 exercices pour s'entraîner
Thing 516 min
Thing 68 min
Semaine
41 heures pour terminer
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 (Total 43 min), 2 quiz
10 vidéos
Fracture Toughness and the Design Plot8 min
Critical Flaw Size and the Design Plot5 min
A Play of Good versus Evil!4 min
Summary33s
Introduction to Fatigue1 min
Defining Fatigue6 min
The Fatigue Curve and Fatigue Strength5 min
Mechanism of Fatigue5 min
Summary1 min
2 exercices pour s'entraîner
Thing 718 min
Thing 812 min
Semaine
52 heures pour terminer
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 (Total 55 min), 3 quiz
12 vidéos
The Lead-Tin Phase Diagram1 min
The Competition Between Instability and Diffusion4 min
The TTT Diagram for Eutectoid Steel5 min
Diffusional Transformations3 min
Diffusionless Transformations4 min
Summary1 min
A Brief History7 min
The Intrinsic Semiconductor4 min
The Extrinsic Semiconductor6 min
Combined Intrinsic and Extrinsic Behavior4 min
Summary1 min
3 exercices pour s'entraîner
Thing 920 min
Thing 1014 min
Ten Things Final40 min
4.6
240 avis27%
a commencé une nouvelle carrière après avoir terminé ces cours
15%
a bénéficié d'un avantage concret dans sa carrière grâce à ce cours
Meilleurs avis
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.
It helped me a lot to have a basic idea about different types of materials, processing and properties. I earned basic knowledge about materials and I can teach these relevant topics to students
Enseignants
James Shackelford
Distinguished Professor EmeritusDepartment of Chemical Engineering and Materials Science
À propos de Université de Californie à 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.
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