Complete Correct Answers | Grade
A+
What AM post-processing technique is used to improve the physical and mechanical
properties of metal parts?
Ans: Heat treatment
What AM process did manufacturers develop in the 1990s that allowed them to produce
metal parts?
Ans: Direct metal laser sintering (DMLS)
What term refers to manufacturers using AM as an intermediary step during a traditional
manufacturing operation?
Ans: Secondary process
What additive manufacturing method involves depositing and curing drops of liquid or
liquid-like material?
Ans: Material jetting
,What unique AM feature can help reduce a part's weight while improving its strength and
fatigue resistance?
Ans: Lattice structures
Which of the following parts would a smaller, more inexpensive AM machine be best suited
to produce?
Ans: Conceptual model
What additive manufacturing method involves sintering granulated material to create a part?
Ans: Powder bed fusion (PBF)
How do STL files represent the complex, smooth surfaces of CAD model? STL files
represent CAD models as:
Ans: A series of interconnected triangles.
What AM material is available in filaments, liquids, and powders and used in material
extrusion and selective laser sintering (SLS)?
Ans: Polymer
What type of AM layer construction method involves creating lines of material with a single-
point source?
, Ans: 1D channel
What computer file represents an AM part as layers and automatically generates the toolpaths
for an AM procedure?
Ans: G-code
What step in the basic AM procedure must engineers or operators complete before creating
an STL file and G-code file? Engineers or operators must first:
Ans: Create a 3D CAD model of the part.
What is an advantage of additive manufacturing? Additive manufacturing:
Ans: Allows for more freedom in part shape
What is one aspect of a final part that engineers or operators select when creating the CAD
model?
Ans: Resolution
What is one barrier to AM growth in the overall manufacturing market?
Ans: variable part tolerance