Prepared byPurvesh Nanavaty

ME sem II Roll No. 247Guided by

Dr. V.V.Mathane

Introduction PMC, CMC & MMC typical applications at a glance Fabrication techniques for specific

application Conclusion References.

This seminar presents the current applications of PMC, MMC & CMC & their appropriate different technology available for fabrication.

WHEN FABRICATING components and structures from traditional construction materials, manufacturing is usually a matter of machining, molding, or joining material that is already solid and in such forms as block, rod, plank, or sheet.

When material and component are simultaneously manufactured, both designer and manufacturer should have a good understanding of how manufacturing conditions influence material properties, since there is often a notable processing–property dependency. In addition to working with an anisotropic material, the designer must also have a good understanding of the processing requirements of candidate raw materials and the specifics of potential manufacturing techniques to be able to estimate the final properties of the component

Hand layup Vacuum bagging/autoclave Compression molding – SMC/BMC Liquid resin molding Resin transfer molding

Pultrusion • Filament winding • Injection molding • Thermoplastics processing • Automated tape laying

Definition: A processwherein the application ofresin and reinforcement isdone by hand onto a suitablemold surface. The resultinglaminate is allowed to cure inplace without furthertreatment

Hand spray-up

Hand lay-up shop

Molds

Mold

Vacuum bag assembly

Vacuum bag

Material on stiffeningstructure

Vacuum bag andfittings attached

Autoclave

Delta II Rocket

Delta II rocket

Can be used with bulk molding compound (BMC)

Molding process

Fiber orientation

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

Car parts

Truck

SCRIMP – Boat Hulls

Pultruded bridges

PultrudedI-beam

Filament winding machines

Delta IV Rocket faringmandrel

Tape laying – 787 fuselage

Composite motors

Thermoplastics processing

Roll-formed partRoll-formed part

Roll-formed part

components must be designed with composites in mind from the onset of the design process. For this reason, the designer must have a good understanding of the candidate materials and must be well versed in the manufacturing techniques that may be employed.

Day by day, Increased No. of developments in the area of fabrication science In tune with the requirement of dimensions, strength application.

Lecture Notes : internet ME 4210: Manufacturing Processes and Engineering -Prof. J.S. Colton-- Georgia Institute of Technology California.

Lecture Notes : MECH 106 introduction to composite materials