1. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 9: Mechanical Failures

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   09 Jan 2009 | Online Presentations | Contributor(s): Duane Douglas Johnson, Omar N Sobh

   Mechanical Failure: temperature, stress, cyclic and loading effect ISSUES TO ADDRESS... How do cracks that lead to failure form? How is fracture resistance quantified? How do the fracture resistances of the different material classes compare? How do we estimate the stress to …

2. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 7: Mechanical Properties

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   15 Dec 2008 | Online Presentations | Contributor(s): Duane Douglas Johnson, Omar N Sobh

   Mechanical Properties Why Mechanical Properties? Need to design materials that will withstand applied load and in-service uses for ... Space exploration, Bridges for autos and people, skyscrapers, MEMS devices, Space elevator? Content: Stress and strain Elastic and Plastic …

3. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 6: Diffusion in Solids

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   19 Nov 2008 | Online Presentations | Contributor(s): Duane Douglas Johnson, Omar N Sobh

   Diffusion in Solids ISSUES TO ADDRESS... How does diffusion occur? How can the rate of diffusion be predicted forsome simple cases? How does diffusion depend on structure and temperature Content Diffusion- Steady and Non-Steady State Simple Diffusion Inter-diffusion …

4. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 5 - Part 2 : Line Defects, Dislocations and their Scale

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   14 Nov 2008 | Online Presentations | Contributor(s): Duane Douglas Johnson, Omar N Sobh

   Imperfections in Solids (Continue) Content: Line Defects: Dislocations and their Scale Line Defects: Dislocations Incremental Slip and Bond Breaking Edge Dislocations Exiting Crystal Form Steps Dislocations: Screw, Edge and Mixed (in handout) Formation of Steps from Screw and Edge …

5. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 5 - Part 1 : Imperfections in Solids

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   14 Nov 2008 | Online Presentations | Contributor(s): Duane Douglas Johnson, Omar N Sobh

   Imperfections in Solids ISSUES TO ADDRESS... What types of defects arise in solids? Describe them Can the number and type of defects be varied and controlled? How do defects affect material properties? Are defects undesirable Given masses or atomic weights …

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