QUESTION 19
GS3
5 marks
What is an FRP composite material? How is it manufactured? Discuss applications in aviation and automobile industries.
WRITE IN
4 min
100 words
What the examiner wants
Explain FRP composites, how they are made and their uses in aviation and automobiles.
What; How; DiscussAnswer exactly what the question asks.
Demand-wise check
- 1Definition: polymer resin matrix (epoxy, polyester) reinforced with fibres (glass, carbon, aramid)≈15 words
- 2Manufacturing: hand lay-up, filament winding, pultrusion, resin transfer moulding, autoclave curing of prepregs≈15 words
- 3Aviation: lighter airframes, fuel saving, fatigue and corrosion resistance (Boeing 787, Tejas)≈15 words
- 4Automobiles: body panels, carbon-fibre cells in EVs, lower weight for efficiency; limits: cost, recycling≈15 words
Open in about 20 words and close in about 20.
Answer plan
CompositionManufacturing methodsAviation usesAutomobile usesLimits
Where marks usually go
- Not explaining the fibre-matrix roles
- No named aircraft or vehicle example
Draw this
- Labelled sketch: fibres embedded in resin matrix
Value addition
- ExampleComposites make up about 50% of the Boeing 787's structure by weight.Boeing
- ExampleComposites form about 45% of the Tejas LCA airframe by weight.HAL/ADA
Next: plan for one minute, write it in 4 minutes, then get it checked.