ENGRI111_32_mechanical3

ENGRI111_32_mechanical3 - ENGRI 111 Mechanical Response...

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ENGRI 111 ENGRI 111 Mechanical Response Mechanical Response Polymers Ceramics Thin Films
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Slip: deformation of material by movement of dislocations through special planes Deformation in Metals Deformation in Metals
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Polymers (Plastics) Polymers (Plastics)
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Deformation of Polymers Deformation of Polymers Elastic Deformation Plastic Deformation
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Temperature and Time Effects
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Non Metallic Materials: Cracks Non Metallic Materials: Cracks Covalent Bonding: Movement of dislocations difficult (Ionic Bonding)
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Non Metallic Materials: Ceramics Non Metallic Materials: Ceramics uiuc.edu
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Catastrophic Failure Catastrophic Failure M. Buehler/Massachusetts Institute of Technology
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Stresses in Films Stresses in Films
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Coefficient of Thermal Expansion Coefficient of Thermal Expansion
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Potential Energy Diagram Potential Energy Diagram T1 T2 T3 r1 r2 r3 Potential Energy r CTE Values Si: 3 ppm Diamond: 1 ppm Al: 25 ppm Polymers: 30-100 ppm
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Symmetric Potential Energy Plot Symmetric Potential Energy Plot T3 Potential Energy r T1 T2 r1 r2 r3 X
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