SAMPE Journal - July/August 2017 - 57

Article

Figure 20. Sample mounting onto AJ system.

Figure 21. Finished pSKIN System on an Aircraft Model.
product is shown in Figure 21.
Once the model was fabricated,
it was mounted on a sting at the
University of Washington wind
tunnel and it was tested at 200km/h
(125mph) as shown in Figure 22.
The model had the LEDs on as well
as the heaters to verify that tracers
and interconnects survived the test.
Finally, an infrared image taken
with a FLIR SC600 Camera from the
pSKIN heaters is shown in Figure 23.

SAMPE Journal, Volume 53, No. 4, July/August 2017

Conclusions
In
this
paper,
we
have
presented different concepts of
multifunctional structures using
additive
manufacturing
for
aerospace applications. We have
been successfully developed and
tested pSKIN: a highly conforming
printed electronics method to
deposit functional sensing networks
for pressure, strain, and temperature
on aircraft structures. Different sets
of printable models for temperature,
strain and pressure were investigated,
tested and assessed. Materials and
processing parameters were refined
not only for metal substrates but also
for polymers and 3D printed type
of materials. A part of these sensing
functions, heaters were fabricated
and demonstrated to be functional as
well. They were successfully printed
and tested not only on coupons but
also on plates inside wind tunnel
conditions.
The different sensing blocks could
be integrated easily into curved 3D
products. On all cases, functionality
was demonstrated. In particular,
pSKIN concept was implemented on
aircraft aerodynamic models proving
to be successful under aerodynamic
loads in the wind tunnel. It can be
concluded that printed electronics
technology for pSKIN can be
integrated without major issues.
Based on the project results, we are
confident that the technology is not
only feasible but viable and has a
large potential to be implemented
in the near future, however further
work is needed for full acceptance.

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