Composites Processing

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Composites Processing ver. 1

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Definition • A microscopic mixture of two or more different materials. materials One typically being the continuous phase (matrix), and the other being the discontinuous phase (reinforcement). • Its It properties ti are strongly t l dependent d d t on the composite structure. • Ductility of matrix combined with stiffness of reinforcement. ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Ceramic fiber composite Polymer matrix composite ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Types / Examples • People • Trees • Fiber reinforced matrices – fiberglass - epoxy

• Particulate reinforced matrices – tires (carbon black in rubber, but it also has continuous fibers (steel or polymer belts))

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Fibers/Particles Reinforcement • • • • • • • • •

Glass Kevlar Carbon Thermoplastics Alumina Boron SiC Steel Si3N4

• • • • • •

Silica Glass beads Talc Rocks Carbon black Calcium carbonate

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Reinforcements

• Rovings – continuous – bulk

• Continuous strand mat • Chopped strand mat • Surface veils ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Matrices • Protects & separates reinforcement, transmits forces • Polymer – PEEK, PEEK epoxy, polyester, l polyurethane, l h rubber bb

• Metal – Al, Al C Cu, Ni Ni, Ti

• Ceramic – glass, glass cement

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Honeycomb composites

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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C 17 Aircraft C-17

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Visby Corvette

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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IsoTruss Bike

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Processes • Hand lay-up • Vacuum V b bagging/autoclave i / l • Compression molding – SMC/BMC

• Liquid resin molding • Resin transfer molding

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Processes • • • • •

Pultrusion Filament winding Injection molding Th Thermoplastics l ti processing i Automated tape laying

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Manual lay lay-up up •

Definition: A process wherein the application of resin and reinforcement is done by hand onto a suitable mold surface. The resulting laminate is allowed to cure in place without further treatment

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Hand spray spray-up up

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Hand lay lay-up up shop

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Molds

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Mold

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Vacuum bag assembly

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Vacuum bag Breather Bleeder

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Lay-up y p Material i l on stiffening iff i structure

Vacuum bag and fittings attached ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Autoclave

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Autoclave

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Delta II Rocket

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Delta II rocket

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Can be used with bulk molding g compound p ((BMC)) ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Schematic of a compression molding press

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Car parts with Sheet Molding Compound (SMC) - Prowler

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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SMC manufacture using a configuration that can make chopped-fiber SMC-R; continuous fiber SMC-C; or continuous, random SMC-C/R material

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Molding process

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Fiber orientation

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Resin transfer molding (RTM) process

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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RTM applications • Auto body panels • Truck air deflectors • Wind blades • Chemical storage tanks • Solar collectors (40 ft diameter, 36 parts)

• RV components • Propellers • Bathtub/shower units • Antenna dishes • Chairs • Swim pool panels

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Car parts

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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RTM automobile t bil structure t t

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Truck

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Train Compartment

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Train Compartment p

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Plenum method for making preforms

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Schematic of high-speed RTM process

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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SCRIMP – Boat Hulls

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Pultrusion process p

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Fiber let-off let off

Preforming

Curing die

Cut-off saw

Fiber guides

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

Resin impregnation

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Puller

Reinforcements

• Rovings – continuous – bulk

• Continuous strand mat • Chopped strand mat • Surface veils ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Continuous fiber reinforcement pultusion

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Hollow structure pultrusion process

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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RIM (Reaction Injection Molding) pultrusion

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Exploded view of pultruded composite

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Bank of America Building Spire

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Pultruded bridges g

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Pultruded I-beam

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Filament winding g

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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GT’s machine

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Filament winding g machines

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Delta IV Rocket faring g mandrel

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Reusable Mandrels

Figure gu e 1: A Veriflex™ e e cy cylinder de is s fabricated. ab cated

Figure 2: The cylinder is placed in a clamshell mold mold, heated, and blow-molded into a complex-shaped mandrel. ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Reusable Mandrels

Figure 3: The mandrel is cooled below the transition temperature resulting in a rigid mandrel.

Figure 4: The mandrel is filament-wound filament wound and then cured cured. The cure process for the composite does not affect the mandrel. ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Reusable Mandrels

Figure 5: After the composite is cured, the Veriflex™ mandrel is heated abo e its activation above acti ation temperature. temperat re The Veriflex™ Verifle ™ then becomes pliable and is removed. The transition temperature does not affect the composite.

Figure 6: The complex part is completed. The cylindrical Veriflex™ mandrel mandrel, which returned to its "memory" memory shape while above its transition temperature, can be reused. ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Creel tensioners

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Integral head resin wet wet-out out bath

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Winding pins for low angle winding

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Continuous curing oven

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Layout of a computer-controlled filament winding machine filament-winding

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Gas tanks

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Aerospace parts

F-16

Patriot missile

Soviet missile

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Tape laying – 787 fuselage

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Tape laying – 787 fuselage

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Composite motors

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Sporting p gg goods

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Glass epoxy filament-wound 9-foot-diameter by 55-footlong assembled railway tank car

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Pipe machine and cure oven

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Light g p pole

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Thermoplastics processing

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Injection molding Clamp l

Mold ld

Barrell Hopper

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Injection molding pellets clamp

nozzle

hopper

barrel

throat

mold cavityy

screw

heaters

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

motor / drive

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Roll forming

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Roll-formed part

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Matched die forming adjustment bolts

sample and holder

alignment pins

weights

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Press forming g of LDF (long discontinuous fibers)

Heat material

Transfer into heated dies

Clamp and thermoform

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

Formed component after trimming

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Compression molding

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Compression molding sequence

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Hydroforming

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Diaphragm forming

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Diaphragm forming

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Vacuum forming in autoclave

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Stretch forming

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Tape laying

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Automated Tow Placement - Thermoplastics

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Robotic thermoplastic ATP machine

NASA Langley ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Filament winding thermoplastic ATP machines hi

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Filament winding thermoset ATP machine

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Large ATP machine

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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Typical parts

ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2009

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