Glass fiber & Carbon fiber

Glass fiber + Carbon fiber

1. Nishu kumar NEW GOVERNMENT POLYTECHNIC PATNA 13

2. GLASS FIBERS

3. Glass fiber is a material consisting of numerous extremely fine fibers of glass. Glass wool, which is called "fiberglass" today, was invented in 1932–1933 by Russell Games . Glass fiber 3 Glass fiber

4. Types of glass fiber The major types of glass fiber have been listed below C-Glass Fiber AE-Glass Fiber A-Glass Fiber E-Glass Fiber 4

5. 5 1. A-glass:  With regard to its composition, it is close to window glass. In the Federal Republic of Germany it is mainly used in the manufacture of processed equipment. Alkali glass made with soda lime silicate. Used where electrical resistivity of E-glass is not needed. A-glass or soda-lime glass is the predominant glass used for containers and windowpanes. 2. C-glass:   This kind of glass shows better resistance to chemical impact. Corrosive resistant glass made with calcium borosilicate. Used in acid corrosive environments.

6. 6 3. E-glass:   This kind of glass combines the characteristics of C-glass with very good insulation to electricity.   Alkali free, highly electrically resistive glass made with alumina-calcium borosilicate. E-glass is known in the industry as a general-purpose fiber for its strength and electrical resistance. It is the most commonly used fiber in the fiber-reinforced polymer composite industry 4. AE-glass : Alkali resistant glass

7. 7 Properties of Glass Fibres 1.It has more Incombustibility. 2. It has Corrosion resistance. 3.It has High strength at low densities. 4.It has Good thermal. 5.It has Sound insulation properties. 6.It has Some Special electrical properties.

8. 8 Use of Glass fiber in civil engineering Glass fibers were first used to reinforce cement and concrete in Russia. However they were corroded by the highly alkaline Portland cement matrix. Therefore, alkali resistant glass fibers have been subsequently developed in UK and other countries.

9. 9 Glass fibers are available in the form of continuous rovings, chopped strand mats, cranette, wool, ropes and woven fabric. Glass fibers coated with epoxy resin compounds have also been tried out to protect them from alkali attack by Portland cement. Availability

10. 10 Glass fibers

11. 11 CARBON FIBER

12. 12 COMPOSITE MATERIALS Composite means Something made up of distinct parts (or constituents). A materials system composed of suitably arranged mixture or combination of two or more micro and macro constituents with an interface separating them that differ in form and chemical composition and are essentially insoluble in each other.

13. Carbon Fiber Composed of carbon atoms bonded together to form a long chain. A super strong material that’s also extremely lightweight. Five times stronger than steel, two times stiffer and about two-third times less in weight. 13

14. 14 Carbon Fiber Carbon even thinner than human hair. Strands can be twisted together, like yarn- can be woven together, like cloth extremely lightweight.

15. 15 Properties Carbon fiber had very high tensile strength. It is a light weight material having low density. It has low thermal expansion. It is a good conductor of electricity. It can wear a high resistance.

16. 16 It has long working life. It’s density is less than density of steel. It is insensitive to change in temperature. It’s properties is much better than any of the other metals. It’s compressive strength is greater than all the reinforcing material. ADVANTAGES

17. DISADVANTAGE It is very costly. It is little bit harmful for the human body as it cause some form of cancer of the lungs. 17

18. 18 Automotive body is also made up of the carbon fiber. It is used in making sports equipment such as light weight badminton rackets, golf stick etc.

19. 19 Constructing up of wind mill blades.

20. 20 THANK YOU!