Question

sls: common applications
use the information below to answer the question.
materials used
with sls, you can use multiple materials, which are suitable for functional
applications such as prototypes and actual production use. the materials are very
strong with high dimensional accuracy.
cost effectiveness
you can make low to medium production runs, which makes it very cost - effective.
complex geometries
being able to create a functional product with hollow sections that don’t require a
support structure is one of the main uses for sls technology. due to the powder bin
being the support, parts can be formed with hollow sections, such as a pipe. the ability
to do complex geometry along with no need for support material makes it a perfect
application for complex ducting creations.
which of the following is true about the materials that can
be used for the sls process?
multiple materials can be used for the sls process.
there are limited materials that can be used for the sls process.
the materials used for the sls process require support structures.
the materials used for the sls process have a low dimensional accuracy.

Explanation:

• For the option "Multiple materials can be used for the SLS process": The "Materials Used" section states "with SLS, you can use multiple materials".
• For "There are limited materials that can be used for the SLS process": This contradicts the "multiple materials" statement in the text.
• For "The materials used for the SLS process require support structures": The "Complex Geometries" section says parts can be formed with hollow sections without support structures (due to powder bin being the support), so this is false.
• For "The materials used for the SLS process have a low dimensional accuracy": The "Materials Used" section says the materials have "high dimensional accuracy", so this is false.

Answer:

A. Multiple materials can be used for the SLS process.