Discussion
In relation to additive manufacturing, match the following
| Process | Layer creation technique | Material | |||
| P | Stereolithography | 1 | Injection of powder stream | I | Paper |
| Q | Fused deposition modeling | 2 | Extrusion of melted polymer | II | Epoxy |
| R | Laminated object manufacturing | 3 | Liquid layer curing | III | Titanium |
| S | Laser-engineered net shaping | 4 | Sheet material deposition | IV | Acrylonitrile butadiene styrene (ABS) |
Answer: B
The correct matching is P-3-II, Q-2-IV, R-4-I, S-1-III.
Stereolithography cures a liquid photopolymer layer by layer (3), typically an epoxy or acrylate resin (II). Fused deposition modeling extrudes melted thermoplastic (2), commonly ABS (IV). Laminated object manufacturing bonds and cuts sheets (4), traditionally paper (I). Laser-engineered net shaping injects a powder stream into a laser melt pool (1), used for metals such as titanium (III).
The other options give SLA titanium, LOM powder injection, or LENS sheet deposition, each of which contradicts how the process works.
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