3.1 Machine Input Parameters
The input parameters are taken from three levels as shown in Table.3.
The strength of FDM-fabricated parts is significantly influenced by the
input parameters. In this study, three process parameters were
investigated at three levels: i) raster angle, ii) layer thickness, and
iii) the number of outer shells. The following are the input parameters
that were chosen.
<<< Table.3 Machine Control Parameters
>>>
To identify the various material combinations, designations were given
as shown in the table. 4. The sandwiching materials were first taken by
volume, with the PLA/PLA-Composites proportions of 80/20, 70/30, 60/40,
and 50/50. Sandwich proportions were confirmed by trial and error; the
PLA was less than 50% in the compositions, and the proportion of 50:50
boosted the strength.
<<<Table.4 Material
Designation>>>
The Table.5 table displays the input parameter combinations for the
three-level raster angle, layer thickness, and the number of shells used
to print specimens.
<<< Table.5 Machine Control Parameters
>>>