Composite materials

An overview on composite materials. Includes types, manufacturing methods and applications of composites. Image credits go to their rightful owners.

1. COMPOSITE MATERIALS Jerome Christo. S

2. DEFINITION: A COMPOSITE MATERIAL is produced from two or more constituent materials with notably dissimilar chemical or physical properties which are merged to create a material with properties unlike the individual elements.‌

3. CONSTITUENTS: Matrix(binder): Binds the fibers together. Protects fibers from corrosion and wear. Determines surface quality. Provides rigidity and shape to the structure. Reinforcement: Carries 70-90% load. Determines structural properties of the composite.

4. MATRIX Organic Matrix Composites (OMCs) Polymer Matrix Composites (PMCs) Carbon‐Carbon composites Metal Matrix Composites (MMC) Ceramic Matrix Composites (CMC)

5. REINFORCEMENT Fibre reinforced composites Particulate reinforced composites Structural composites (Laminar, sandwich)

6. Sandwich panels

7. ALLOYS vs COMPOSITES: Alloy Atleast one component should be metal. Constituents combine chemically. Composite Both constituents can be non metallic. Constituents remain chemically distinct.

8. ADVANTAGES High strength to weight ratio Lightweight Fire resistance Electrical properties Colour Low thermal conductivity Design flexibility

9. DISADVANTAGES High cost Difficult to dispose Higher wastage of material Transverse properties may be weak Difficult to identify defects

10. APPLICATIONS: Motorsports Aerospace Construction Sports equipments

11. Manufacturing methods

12. Hand layup

13. Filament winding

14. Spray up

15. Vaccum Assisted Resin Transfer Moulding

16. Pultrusion

17. Stir casting

18. Pre preg processing

19. Autoclave

20. SMART COMPOSITES – Smart materials embedded in composite.

21. THANK YOU...