This document provides an overview of advanced composites. It begins with early forms of composites like mud bricks and plywood. It then defines advanced composites as consisting of fiber cloth and resin. Some advantages are listed as low weight and high strength, while disadvantages include high costs and difficulty detecting hidden damage. The document outlines different types of composites like carbon fiber, Kevlar, and boron, and discusses proper storage, handling and safety procedures when working with composites.

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2. 2016.01.282016.01.28
Hüseyin KÜÇÜKHüseyin KÜÇÜK
ADVANCEDADVANCED
COMPOSITESCOMPOSITES
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3. AGENDA
 Early Forms of Composites
 Definition of Advanced Composites
 Advantages / Disadvantages
 Types of Advanced Composites
 Storage, Handling, and Safety
 Review
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4. EARLY FORMS OF
COMPOSITES
 Mud-brick
(Straw mixed with mud)
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 Plywood
(Glued plies of wood)

5. EARLY FORMS OF
COMPOSITES
 The First Composite Aircraft Structure, in 1940
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6. DEFINITION OF ADVANCED
COMPOSITES
 Fiber cloth and Resin
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7. ADVANTAGES
 Low weight – high strength
 Stiffness-to-weight ratio
 Increase design flexibility
 More resistant to fatigue than metals
 Composites do not corrode
 Aerodynamically smooth surfaces
 "Low Observable" characteristics
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8. DISADVANTAGES
 Expensive raw material cost
 Labor intensive
 Hidden damage can be hard to detect
 Special training and skills are required
 Some composites can cause corrosion
 Short shelf life
 Moisture absorption (aramid)
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9. TYPES of COMPOSITES
 Carbon/Graphite (Carbon Fiber)
– Design Flexibility
– Stiff and strong
– Structural aircraft applications
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10. TYPES of COMPOSITES
 Aramids (Kevlar)
– Applications both in aviation and civilian sectors.
– Kevlar 29 and Kevlar 49
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11. TYPES of COMPOSITES
 Boron
– The hardest and strongest
– Only flat structures
– Very expensive and hazardous
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12. STORAGE, HANDLING,
SAFETY
 Storage
– Non-Frost-Free Freezer
– Constant 0 °F or lower
– Moisture proof bags
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 Handling
– Non-powdered latex or nitrile gloves
 Safety
– Wear safety goggles
– Protect your skin
– Wear air supplied respirator or mask

13.  Definition of composites
 Advantages / Disadvantages
 Types of Composites
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REVIEW