Precision Manufacturing Using Additive Manufacturing
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Materials engineering (MPAEM), MSc
Publicerad
2024
Författare
Sathi Praveen, Abhinav
Bhattacharyya, Soham
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
With the increase of global data traffic every year, the demand for high-speed connectivity
is getting stronger day by day. Microwave technology for wireless communication
is a strong contender for high-speed, low-latency communication. These
high frequency transmission links have tiny cavity filters with complex geometry,
which is arduous to manufacture with the conventional methods. This calls for
novel alternative manufacturing technologies to produce these filters without compromising
the performance. The thesis explores the feasibility of employing additive
manufacturing techniques called binder jetting (BJT) and Material Jetting (MJT)
for the manufacturing of the tiny intricate cavity resonators for 23GHz, 80GHz, and
110GHz respectively. The resonators were manufactured by Bosch using Markforged
PX100™ BJT printer and XJET Caramel 1400M MJT printer with different orientations
to study electrical performance and how dimensional accuracy and surface
roughness affect the performance of the printed parts. The print job for the BJT
was carried out in two batches, second print was carried out after making the design
changes from the feedback of the first print. The first design presents itself with
sharp edges and corners while the second one incorporates fillets. The design change
has brought difference in the results as well, the first print showed a close resonant
frequency with less output signal while the second print with fillets shows a shift in
anticipated frequency but with improved output signal. MJT parts reproduced the
designed resonant frequency with superior surface finish and dimensional accuracy.
It is unclear that the different orientations have effect on the performance of the
resonator.
Beskrivning
Ämne/nyckelord
Additive Manufacturing , cavity resonators , Binder jetting , Material jetting , q factor , surface roughness , dimensional accuracy