Key engineering materials,
Journal Year:
2023,
Volume and Issue:
956, P. 135 - 142
Published: Sept. 29, 2023
The
design
flexibility
of
Additive
manufacturing
(AM)
processes
combined
with
optimal
structure
selection
has
greatly
expanded
the
research
for
lattice
like
structures.
development
elastic
materials
such
as
Thermoplastic
polyurethane
(TPU)
was
enhanced
by
existence
compatible
additive
technologies,
which
resulted
in
interest
inclusion
this
material
all
types
product
and
industrial
applications.
Several
studies
established
critical
role
influence
on
performance
structures
powered
changes
geometrical
parameters.
These
findings
possibility
designing
different
performances
order
to
be
implemented
several
applications
specific
needs.
Therefore,
objective
work
focused
characterization
closed-wall
through
analysis
a
function
parameters
used.
In
way,
were
manufactured
tested.
results
showed
correlation
between
geometric
variables
specimen’s
stiffness.
A
substantial
variation
stiffness
thickness
unit
cell
height
layer
found.
Same
values
can
achieved
using
Similar
recycled
obtained
favorable
results.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1133 - 1133
Published: April 22, 2025
This
study
presents
a
comparative
analysis
of
the
influence
open-cell
and
closed-cell
topologies
on
manufacturing
quality
resultant
elasticity
3D
printed
thermoplastic
polyurethane
(TPU)
lattice
structures.
Lattice
samples
were
designed
based
various
configurations,
varying
in
unit
cell
size
fabricated
using
extrusion-based
additive
(AM)
techniques.
A
microscopic
was
conducted
to
assess
defects,
while
mechanical
compression
tests
performed
characterize
samples.
The
correlation
between
obtained
results
enabled
evaluation
relationship
manufacturability
their
stiffness.
findings
reveal
substantial
differences
topologies,
with
structures
exhibiting
more
pronounced
defects.
Additionally,
resulting
density
found
provide
design
advantages,
as
demonstrated
superior
load
resistance.
accumulation
defects
identified
critical
factor
influencing
deviations
stiffness
measurements.
establishes
foundational
framework
for
structural
design,
emphasizing
impact
topology
performance.
significance
this
research
lies
its
contribution
optimization
TPU-based
structures,
providing
valuable
insights
product
applications.
Polymers,
Journal Year:
2023,
Volume and Issue:
15(5), P. 1198 - 1198
Published: Feb. 27, 2023
In
the
planning
stage
of
fabrication
process
physical
models
cellular
structures,
a
surface
model
structure
needs
to
be
adjusted
acquire
requisite
properties,
but
errors
emerge
frequently
at
this
stage.
The
main
objective
research
was
repair
or
reduce
impact
deficiencies
and
before
models.
For
purpose,
it
necessary
design
structures
with
different
accuracy
settings
in
PTC
Creo
then
compare
them
after
tessellation
using
GOM
Inspect.
Subsequently,
locate
occurring
preparing
propose
an
appropriate
method
their
repair.
It
found
that
Medium
Accuracy
setting
is
adequate
for
structures.
within
regions
where
mesh
merged,
duplicate
surfaces
emerged,
entire
could
considered
as
manifesting
non-manifold
geometry.
manufacturability
check
showed
inside
model,
toolpath
creation
strategy
changed,
causing
local
anisotropy
40%
fabricated
model.
A
repaired
proposed
manner
correction.
smoothing
model's
proposed,
reducing
polygon
density
file
size.
findings
methods
designing
models,
error
can
used
fabricate
higher-quality
Materials,
Journal Year:
2024,
Volume and Issue:
17(13), P. 3363 - 3363
Published: July 8, 2024
Increased
usage
of
selective
laser
sintering
(SLS)
for
the
production
end-use
functional
components
has
generated
a
requirement
developing
new
materials
and
process
improvements
to
improve
applicability
this
technique.
This
article
discusses
novel
wherein
carbon
black
was
applied
surface
TPU
powder
reduce
reflectivity
during
SLS
process.
The
printing
carried
out
with
preheating
temperature
75
°C,
energy
density
0.028
J/mm2,
incorporating
0.4
wt
%
addition
powder,
controlling
layer
thickness
at
125
μm.
mixed
after
printing,
shows
13.81%,
accompanied
by
highest
average
1.09
g/cm3,
hardness
78
A,
tensile
strength
7.9
MPa,
elongation
break
364.9%.
Compared
commercial
which
lacks
coating,
reflectance
decreased
1.78%,
mechanical
properties
improved
33.9%,
there
notable
reduction
in
porosity
sintered
product.
Materials,
Journal Year:
2023,
Volume and Issue:
16(15), P. 5487 - 5487
Published: Aug. 6, 2023
In
recent
years,
lattice
structures
produced
via
additive
manufacturing
have
been
increasingly
investigated
for
their
unique
mechanical
properties
and
the
flexible
diverse
approaches
available
to
design
them.
The
of
a
strut
with
variable
cross-sections
in
structure
is
required
improve
properties.
this
study,
method
based
on
cross-section
composed
mixture
three
ellipses
named
tri-directional
elliptical
cylindrical
section
(TEC)
proposed.
were
fabricated
selective
laser
melting
316L
alloy.
finite
element
analysis
results
show
that
TEC
possessed
high
structures.
Compression
experiments
confirmed
novel
exhibited
increases
elastic
modulus,
compressive
yield
strength,
energy
absorption
capacity
24.99%,
21.66%,
20.50%,
respectively,
compared
conventional
at
an
equal
level
porosity.
Key engineering materials,
Journal Year:
2023,
Volume and Issue:
956, P. 135 - 142
Published: Sept. 29, 2023
The
design
flexibility
of
Additive
manufacturing
(AM)
processes
combined
with
optimal
structure
selection
has
greatly
expanded
the
research
for
lattice
like
structures.
development
elastic
materials
such
as
Thermoplastic
polyurethane
(TPU)
was
enhanced
by
existence
compatible
additive
technologies,
which
resulted
in
interest
inclusion
this
material
all
types
product
and
industrial
applications.
Several
studies
established
critical
role
influence
on
performance
structures
powered
changes
geometrical
parameters.
These
findings
possibility
designing
different
performances
order
to
be
implemented
several
applications
specific
needs.
Therefore,
objective
work
focused
characterization
closed-wall
through
analysis
a
function
parameters
used.
In
way,
were
manufactured
tested.
results
showed
correlation
between
geometric
variables
specimen’s
stiffness.
A
substantial
variation
stiffness
thickness
unit
cell
height
layer
found.
Same
values
can
achieved
using
Similar
recycled
obtained
favorable
results.
