Fiber Reinforced Composites - An Overview.ppt

Fabrication and Characterization of Fiber Reinforced Composites for Industrial Applications

1. INTRODUCTION TO FIBER REINFORCED COMPOSITES AN OVERVIEW . M.S.Santhosh Junior Research Fellow Department of mechanical engineering Selvam College of Technology Namakkal, Tamilnadu, India.

2. PRESENTATION OVERVIEW Introduction . Classification of FRC. Fundamentals of FRC Manufacturing Processing of PMC’s . Curing Processes. Defects in Fiber Reinforced Composites. Tensile Properties of FRC Flexural Properties . Shear Properties Impact Properties Applications of FRP’S References

3. INTRODUCTION Fiber-reinforced polymer (FRP), also Fiber reinforced plastic, is a composite material made of a polymer matrix reinforced with fibers. The fibers are usually glass, carbon, or aramid, although other fibers such as paper or wood or asbestos have been sometimes used . The polymer is usually an epoxy, vinyl ester or polyester thermosetting plastic, and phenol formaldehyde resins are still in use . FRPs are commonly used in the aerospace, automotive, marine, and construction industries. .

4. CLASSIFICATION OF FIBER REINFORCED COMPOSITES BASED ON MATRICES

5. TYPES OF POLYMERS

6. TYPES OF NATURAL FIBERS

7. FUNDAMENTALS OF FRC MANUFACTURING Degree of Cure Viscosity Resin Flow Consolidation Gel-Time Test Shrinkage Voids.

8. PROCESSING OF POLYMER MATRIX COMPOSITES HAND LAYUP PROCESS

9. SPRAY UP PROCESS

10. RESIN TRANSFER MOLDING

11. VACUUM BAG MOLDING

12. AUTO CLAVE MOLDING

13. FILAMENT WINDING PROCESS

14. PULTRUSION PROCESS

15. THERMO PLASTIC COMPOSITE PROCESSING FILM STACKING PROCESS

16. THERMO PLASTIC TAPE LAYING

17. INJECTION MOLDING

18. ADVANCED CURING PROCESSES ELECTRON BEAM OR MICROWAVE CURING PROCESS

19. CRACKS

20. TENSILE PROPERTIES OF PMC’S Tensile properties, such as tensile strength, tensile modulus, and Poisson’s ratio of flat composite laminates, are determined by static tension tests in accordance with ASTM D3039.

21. COMPRESSIVE PROPERTIES CELANESE TEST

22. IITRI TEST

23. SANDWICH EDGEWISE COMPRESSION TEST

24. FLEXURAL PROPERTIES Flexural properties, such as flexural strength and modulus, are determined by ASTM test method D790. The flexural strength in a three-point flexural test is given by,

25. FLEXURAL TEST ARRANGEMENTS (a) Three-point bending and (b) Four-point bending modes.

26. SHEAR PROPERTIES Test configuration for a 10 off-axis shear test.

27. IOSIPESCU SHEAR TEST (a) test fixture (b) schematic representation, (c) free body, (d) shear force, and (e) Bending moment distribution.

28. TWO-RAIL AND THREE-RAIL SHEAR TESTS. Test configuration for (a) two-rail and (b) three-rail shear tests.

29. FATIGUE PROPERTIES The fatigue properties of a material represent its response to cyclic loading, which is a common occurrence in many applications. Stress vs. time diagram in a fatigue test.

30. IMPACT PROPERTIES A variety of standard impact test methods are available for metals (ASTM E23) and unreinforced polymers (ASTM D256). Charpy Test

31. IZOD TEST

32. DROP- WEIGHT IMPACT TEST

33. POST IMPACT COMPRESSION TEST Test fixture for compression test after impact

34. APPLICATIONS OF FRP’S

35. USE OF FIBER-REINFORCED POLYMER COMPOSITES IN BOEING 777

36. COMPRESSION-MOLDED VALVE COVER FOR A TRUCK ENGINE

37. CARBON FIBER-REINFORCED EPOXY ROOF PANEL IN BMW M6 VEHICLE

38. CARBON FIBER-REINFORCED EPOXY BICYCLE FRAME

39. GLASS FIBER-REINFORCED VINYL ESTER PULTRUDED SECTIONS IN THE BRIDGE DECK SYSTEM

40. REFERENCES Fiber Reinforced Composites Materials Manufacturing and Design - P.K. Mallick Composite Materials and Processing – M.Balasubramaniyan Fabrication And Mechanics of Fiber Reinforced Elastomers - Larry D. Peel