Question

Which of the following additive manufacturing technique(s) can use a wire as a feedstock material?

• A. Stereolithography
• B. Fused deposition modeling
• C. Selective laser sintering
• D. Directed energy deposition processes

Hint:

In additive manufacturing, wire is commonly used in Directed Energy Deposition processes such as Laser Engineering Net Shaping (LENS) and Direct Energy Deposition (DED).

Answer 1

The Correct Option is B, D

Directed energy deposition (DED) is an additive manufacturing technique that can use wire or powder as feedstock material. The process involves melting the material using focused energy such as a laser, electron beam, or plasma arc and depositing it onto a substrate to build up layers. This process is often used for repair, coating, and additive manufacturing of parts. In contrast, stereolithography (SLA), fused deposition modeling (FDM), and selective laser sintering (SLS) typically do not use wire as a feedstock material. Thus, the correct answer is (D).