Informações sobre o curso: 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
Para quem é direcionado este curso: "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
Desenvolvido por: University of California, Davis
Ministrado por: James Shackelford, Distinguished Professor Emeritus
Department of Chemical Engineering and Materials Science
| Compromisso | 5 weeks, 3 hours per week |
| Idioma | English |
| Como ser aprovado | Seja aprovado em todas as tarefas para concluir o curso. |
| Classificação do usuário |
Programa
SEMANA 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 videos
- Vídeo: Six Categories of Engineering Materials
- Vídeo: Structure Leads to Properties
- Vídeo: Summary
- Vídeo: Crystallography and the Electron Microscope
- Vídeo: Introduction to the Arrhenius Relationship
- Vídeo: The Arrhenius Relationship Applied to the Number of Vacancies in a Crystal
- Vídeo: Point Defects and Solid State Diffusion
- Vídeo: The Arrhenius Relationship Applied to Solid State Diffusion
- Vídeo: Summary
Nota atribuída: Thing 1
Nota atribuída: Thing 2
SEMANA 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 videos
- Vídeo: Plastic Deformation by Dislocation Motion
- Vídeo: Summary
- Vídeo: The Stress versus Strain (Tensile) Test
- Vídeo: The “Big Four” Mechanical Properties
- Vídeo: Focusing on Strength and Stiffness
- Vídeo: Beyond the Tensile Strength
- Vídeo: Focusing on Ductility
- Vídeo: A Fifth Parameter – Toughness
- Vídeo: Summary
Nota atribuída: Thing 3
Nota atribuída: Thing 4
SEMANA 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 videos
- Vídeo: The Creep Curve
- Vídeo: Creep Deformation and the Arrhenius Relationship
- Vídeo: Mechanisms for Creep Deformation
- Vídeo: Summary
- Vídeo: The Ductile-to-Brittle Transition and Crystal Structure
- Vídeo: Plotting the Ductile-to-Brittle Transition
- Vídeo: Summary
Nota atribuída: Thing 5
Nota atribuída: Thing 6
SEMANA 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 videos
- Vídeo: Fracture Toughness and the Design Plot
- Vídeo: Critical Flaw Size and the Design Plot
- Vídeo: A Play of Good versus Evil!
- Vídeo: Summary
- Vídeo: Introduction to Fatigue
- Vídeo: Defining Fatigue
- Vídeo: The Fatigue Curve and Fatigue Strength
- Vídeo: Mechanism of Fatigue
- Vídeo: Summary
Nota atribuída: Thing 7
Nota atribuída: Thing 8
SEMANA 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 videos
- Vídeo: The Lead-Tin Phase Diagram
- Vídeo: The Competition Between Instability and Diffusion
- Vídeo: The TTT Diagram for Eutectoid Steel
- Vídeo: Diffusional Transformations
- Vídeo: Diffusionless Transformations
- Vídeo: Summary
- Vídeo: A Brief History
- Vídeo: The Intrinsic Semiconductor
- Vídeo: The Extrinsic Semiconductor
- Vídeo: Combined Intrinsic and Extrinsic Behavior
- Vídeo: Summary
Nota atribuída: Thing 9
Nota atribuída: Thing 10
Nota atribuída: Ten Things Final
Perguntas frequentes
Como funciona
Trabajo del curso
Cada curso es como un libro de texto interactivo, con videos pregrabados, cuestionarios y proyectos.
Ayuda de tus compañeros
Conéctate con miles de estudiantes y debate ideas y materiales del curso, y obtén ayuda para dominar los conceptos.
Certificados
Obtén reconocimiento oficial por tu trabajo y comparte tu éxito con amigos, compañeros y empleadores.
Desenvolvedores
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.
Classificações e avaliações
Dr. Shackelford has a knack for explaining engineering principles well. Thank you!
learn more knowledge
I liked the course, good fundamental knowledge.
It lacked examples, but overall it was imperative to know as an engineer
O Coursera proporciona acesso universal à melhor educação do mundo fazendo parcerias com as melhores universidades e organizações para oferecer cursos on-line.
© 2018 Coursera Inc. Todos os direitos reservados.
JK
Great class on materials and how crystal and atomic bonds lead to material properties. The chapter on semiconductors was new material for me and very valuable to introduce me to valence and conduction bands. The other material was good review for me as a Mech. Eng.