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