| dc.description.abstract | The development of three-dimensional technology is increasingly advanced
with the increasing ability of computers to process data. One of the technologies
that is developing very rapidly is three-dimensional printing technology. A blower
is a tool that can make life easier, both in households and industry. In a centrifugal
blower, there is a main component, namely the impeller. The impeller is a
cylindrical disc that functions as a part of the fluid transfer, the number of blades
on the impeller is directly proportional to its efficiency. Damage to the impeller is
caused by many factors, one of which is cavitation and lack of maintenance on the
impeller so that the impeller is damaged and rusty. The Taguchi method is a
methodology in the field of engineering that aims to improve product and process
quality while simultaneously reducing costs and resources to a minimum.
Determination of process parameters consisting of factors and experimental levels
is based on literature studies that have been carried out. The parameters used in
this study are layer thickness, print speed, printing temperature, with each of the 3
levels determined based on recommendations from the PLA + (Polylactid Acid)
character. The value of the degrees of freedom obtained is 6, so this study uses the
Orthogonal Array L27 with 27 trials with 3 repetitions for each response accuracy
of the roughness and weight values of the sample. From the experimental results in
the Taguchi L27 method, it was obtained that the optimum value of the surface
roughness value (Ra) of 0.953 was produced from the analysis of Taguchi Ra versus
H V T, while the optimum value of the weight value (W) of 3.560 was produced from
the analysis of Taguchi W versus H V T. The impeller has been successfully
fabricated for 2 variants, for the Ra variant the optimum value was obtained at a
layer thickness of 0.2 mm, a printing speed of 60 m / s and a printing temperature
of 230ºC, while for the W variant the optimum value was obtained at a layer
thickness of 0.32 mm, a printing speed of 60 m / s and a printing temperature of
230ºC. | en_US |
