Lec1-18-07

Lec1-18-07 - Mechanical and Manufacturing Engineering...

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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 1 Mechanical and Manufacturing Engineering Technology Composite Materials Manufacturing MET 418/518 ARIZONASTATE UNIVERSITY Spring 2007 - 18 Jan. Fibers, Interfaces, and Forms
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 2 Introduction •50,000 materials available to engineers - Metal - Plastics - Ceramics - Composites •Properties overlap between classes
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 3 Typical Properties (Table 1.1)
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 4 Metals (1.1.1) • Dominating materials – largest design and processing history • Metals: iron, aluminum, copper, magnesium, •Alloys - better properties •Heavier than composites (steel 4-7x) except for •Usually requires several machining operations •High stiffness, strength, thermal stability (service temperature), and thermal & electrical conductivity
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 5 Plastics (1.1.2) • Most common over last decade • Exceeds steel production by volume • Light weight, easy processability, corrosion resistance • Wide number of forms and applications • Net or near net-shape parts (good service finish) • Not high temperature resistant (special for 100- 200°C service)
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 6 Ceramics (1.1.3) •Great thermal stability, high hardness, high stiffness, corrosion resistance •No ductility – brittle •High temperature/wear applications •Requires high temperature fabrication processes •Difficult to machine, expensive tools
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 7 Composites (1.1.4) • Polymeric matrix usage accelerated in ‘60’s – now common usage •Better product performance, light weight •Potential weight savings replacing aluminum (20-50%) and steel (60-80%) •Two (or more) materials to give unique combination of properties •Fiber reinforced composites – constituent material retain origi- nal forms, providing better properties than individual compo- nents •Wood is cellulose fibers in a lignin matrix
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18 January 2007 Mechanical and Manufacturing MET 418/518 Engineering Technology Composite Materials Manufacturing D.R. Ruffner Page 8 What are Composites? (1.2)
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This note was uploaded on 08/25/2009 for the course AET AET418/518 taught by Professor Rutherford during the Spring '07 term at ASU.

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Lec1-18-07 - Mechanical and Manufacturing Engineering...

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