Question

Match the additive manufacturing technique in Column I with its corresponding input material in Column II.

• A. P-3, Q-4, R-2
• B. P-1, Q-2, R-4
• C. P-2, Q-3, R-1
• D. P-4, Q-1, R-4

Hint:

Remember: FDM uses polymer filaments, LOM uses sheets, and SLS uses fine powders. Matching techniques with feedstock becomes easy once you classify them by material form.

Answer 1

The Correct Option is A

To match each additive manufacturing technique with its correct input material, we compare their process characteristics and required feedstock.
Step 1: Fused Deposition Modelling (P).
FDM works by melting and extruding a thermoplastic polymer filament through a heated nozzle. Thus, its input material is a \emph{polymer filament}. This matches item 3.
Step 2: Laminated Object Manufacturing (Q).
LOM builds parts by stacking and bonding thin sheets of material followed by laser cutting. The input is typically \emph{thermoplastic sheets or green metal sheets}. This corresponds to item 4.
Step 3: Selective Laser Sintering (R).
SLS uses a high-energy laser to selectively fuse powdered material. Therefore, it requires \emph{heat fusible powder}, matching item 2.
Thus the correct matching is: P-3, Q-4, R-2.
Final Answer: (A) P-3, Q-4, R-2