Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 28, 2024
This
study
explores
the
impact
of
metallic
shells
by
electroforming
method
on
mechanical
behavior
thermoplastic
polyurethane
(TPU)-based
lattice
structures.
First,
TPU
structures
were
printed
additive
manufacturing
technique.
Then
layers
Ni
and
Cu
as
a
thin
shell
dressed
in
baths
solutions.
Finally,
uniaxial
compression
tests
achieved
samples.
Results
demonstrated
substantial
enhancements
performance
attributable
to
these
coatings.
Notably,
Ni-coated
structure
(Ni-LS)
exhibited
peak
yield
strength
4.55
MPa,
marking
1.08-fold
improvement
over
Ni-Cu-LS
1.35-fold
increase
relative
Ni-Cu-Ni-LS
variant.
Furthermore,
energy
absorption
density
coated
was
elevated
nearly
sixfold
compared
uncoated
lattice,
with
multi-layer
coatings
providing
additional
gains.
These
results
underscore
potential
Cu-coated
lattices
deliver
exceptional
strength-to-weight
ratios
enhanced
capabilities.
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(5)
Published: May 1, 2024
Due
to
the
tunable
characteristics
of
elastic
waves,
vibroacoustic
coupling
behavior
a
mechanical
metastructure
is
hot
topic
underwater
vehicles.
In
this
work,
shell
with
active
feedback
control
presented
and
fabricated.
The
dynamic
effective
density
sound
pressure
level
are
derived
find
influences
acceleration
displacement
control.
Different
from
single
cylinder,
double
cylinder
structure
has
both
in-phase
anti-phase
modes.
Numerical
results
obtained
by
Fourier
transform
harmonic
series
expansion.
With
introduction
an
system,
reduction
acoustic
radiation
shows
low-frequency
broadband
characteristics.
addition,
finite
element
simulation
applied
support
numerical
present
Finally,
experiment
performed
in
anechoic
chamber
illustrate
quiet
shell,
which
can
be
new
designs
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 28, 2024
This
study
explores
the
impact
of
metallic
shells
by
electroforming
method
on
mechanical
behavior
thermoplastic
polyurethane
(TPU)-based
lattice
structures.
First,
TPU
structures
were
printed
additive
manufacturing
technique.
Then
layers
Ni
and
Cu
as
a
thin
shell
dressed
in
baths
solutions.
Finally,
uniaxial
compression
tests
achieved
samples.
Results
demonstrated
substantial
enhancements
performance
attributable
to
these
coatings.
Notably,
Ni-coated
structure
(Ni-LS)
exhibited
peak
yield
strength
4.55
MPa,
marking
1.08-fold
improvement
over
Ni-Cu-LS
1.35-fold
increase
relative
Ni-Cu-Ni-LS
variant.
Furthermore,
energy
absorption
density
coated
was
elevated
nearly
sixfold
compared
uncoated
lattice,
with
multi-layer
coatings
providing
additional
gains.
These
results
underscore
potential
Cu-coated
lattices
deliver
exceptional
strength-to-weight
ratios
enhanced
capabilities.
