Discuss applications of composites.

Composites combine high strength and stiffness with low weight and good corrosion resistance. Their main applications are:

• Aerospace: CFRP and GFRP for aircraft wings, fuselage, tail fins, helicopter rotor blades, satellite structures; sandwich panels for floors.
• Automobiles: body panels, bumpers, drive shafts, brake pads, leaf springs; CFRP chassis of racing cars. Lighter vehicles save fuel.
• Marine: GFRP boat hulls, decks, ship structures, which resist corrosion.
• Construction: reinforced cement concrete (RCC), FRP bars, bridges, roofing sheets, doors, window frames.
• Electrical and electronics: PCB laminates (glass–epoxy), insulators, switchgear housings.
• Sports goods: tennis rackets, golf clubs, bicycle frames, fishing rods, skis.
• Chemical industry: corrosion-resistant pipes, tanks and ducts.
• Others: wind-turbine blades, medical implants and prosthetics, bullet-proof vests (Kevlar), cutting tools (cermets), tyres (carbon black in rubber).