<p>Explosives and rocket fuel are
just two prime examples of energetic materials, compounds that contain a
combustible fuel and oxidizer within the same substance. Recent advances have enabled the construction
of energetic materials through multiple variations of additive manufacturing,
principally inkjet, direct-write, fused filament fabrication, electrospray
deposition, and stereolithography. Many
of the methods used for creating multiple layered objects (three-dimensional)
from energetic materials involve the use of highly viscid materials.</p>
<p>The focus of this work was to
design a process capable of additively manufacturing three-dimensional objects
from melt-castable energetic materials, which are known for their low viscosity. An in-depth printer design and fabrication
procedure details the process requirements discovered through previous works,
and the adaptations available and used to construct an additive manufacturing
device capable of printing both energetic and non-energetic (also referred to
as inert) melt-castable materials.
Initial characterization of three proposed inert materials confirmed
their relative similarity in rheological properties to melt-castable energetic
materials and were used to test the printer’s performance.</p>
<p>Preliminary tests show the
constructed device is capable of additively manufacturing melt-castable
materials reproducibly in individual layers, with some initial successful prints
in three-dimensions, up to three layers.
An initial characterization of the printer’s deposition characteristics
additionally matches literature predictions.
With the ability to print three-dimensional objects from melt-castable
materials confirmed, future work will focus on the reproducibility of
multi-layered objects and the refined formulation of melt-castable energetic
materials.</p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14522517 |
| Date | 30 April 2021 |
| Creators | Patrick D Bowers (10732050) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/Direct-Write_of_Melt-Castable_Energetic_and_Mock_materials/14522517 |
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