International Journal of 3D Printing Technologies and Digital Industry,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 8, 2024
Additive
manufacturing
methods,
with
their
potential
to
revolutionize
many
areas,
especially
spare
parts
production,
enable
the
optimization
of
supply
chain
in
production
processes
an
on-site
approach.
The
increased
number
users
additive
methods
and
easy
access
material
extrusion-based
can
potentially
transform
industry.
In
this
study,
investigate
performance
fasteners,
which
are
indispensable
components
industry,
manufacturing.
This
study
focuses
on
torque
strengths,
hardness,
microscope
images
bolts
nuts
produced
by
(MEX)
using
PLA
(Polylactic
Acid)
PET
(Polyethylene
Terephthalate)
polymers
different
parameters.
Unlike
conventional
M8x50
DIN
(German
institute
for
standardization)
933
M8
934
were
produced.
positioned
MEX
device
two
positions.
forces
applied
measured
mechanical
tests.
Hardness
was
measured,
bolt
thread
surfaces
examined
a
stereo
microscope.
Data
usage
limits
polymeric
determined
data
obtained.
Materials Testing,
Год журнала:
2024,
Номер
66(5), С. 696 - 704
Опубликована: Фев. 19, 2024
Abstract
Thin-walled
structures
are
one
of
the
important
safety
components
used
in
vehicles.
They
placed
front
parts
vehicles
to
minimize
impacts
that
occur
event
a
collision,
and
they
absorb
impact
force
by
changing
shape
collision.
Crash
boxes
have
high-impact
absorption,
low
weight,
low-cost
expectations.
In
design
crash
boxes,
thin-walled
preferred
due
their
high
deformation
capability.
this
study,
additive
manufacturing
method
was
produce
structures.
were
produced
methods
using
PLA
ABS
materials.
The
manufactured
tested
an
test.
experimental
results,
energy
absorption
ability
from
materials
examined,
fragility
observed.
results
verified
finite
element
analysis
made
Materials Testing,
Год журнала:
2024,
Номер
66(6), С. 847 - 855
Опубликована: Март 22, 2024
Abstract
In
recent
years,
additive
manufacturing
(AM)
technologies
have
been
used
in
many
industries,
such
as
automotive,
defense,
space,
and
aviation.
Depending
on
the
development
of
this
technology,
effect
relationship
between
parameters,
raster
angles,
production
speed,
melting
temperature
during
materials,
has
an
important
issue
mechanical
properties
materials.
study,
effects
±45°
0–90°
angles
15
%
short
carbon
fiber
reinforced
polyethylenetereflatate
(CF15PET)
30
glass
polypropylene
(GF30PP)
materials
were
investigated.
As
a
result
it
was
determined
that
different
affect
both
Materials Testing,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 30, 2024
Abstract
This
paper
introduces
and
investigates
an
enhanced
Partial
Reinforcement
Optimization
Algorithm
(E-PROA),
a
novel
evolutionary
algorithm
inspired
by
partial
reinforcement
theory
to
efficiently
solve
complex
engineering
optimization
problems.
The
proposed
combines
the
(PROA)
with
quasi-oppositional
learning
approach
improve
performance
of
pure
PROA.
E-PROA
was
applied
five
distinct
design
components:
speed
reducer
design,
step-cone
pulley
weight
optimization,
economic
cantilever
beams,
coupling
bolted
rim
vehicle
suspension
arm
An
artificial
neural
network
as
metamodeling
is
used
obtain
equations
for
shape
optimization.
Comparative
analyses
other
benchmark
algorithms,
such
ship
rescue
algorithm,
mountain
gazelle
optimizer,
cheetah
demonstrated
superior
in
terms
convergence
rate,
solution
quality,
computational
efficiency.
results
indicate
that
holds
excellent
promise
technique
addressing
Journal of Composites Science,
Год журнала:
2024,
Номер
8(7), С. 273 - 273
Опубликована: Июль 15, 2024
The
incorporation
of
fiber
reinforcements
into
polymer
matrices
has
emerged
as
an
effective
strategy
to
enhance
the
mechanical
properties
composites.
This
study
investigated
tensile
and
fracture
behavior
3D-printed
polylactic
acid
(PLA)
composites
reinforced
with
chopped
carbon
fibers
(CCFs)
through
experimental
characterization
finite
element
analysis
(FEA).
Composite
samples
varying
CCF
orientations
(0°,
0°/90°,
+45°/−45°,
0°/+45°/−45°/90°)
were
fabricated
via
fused
filament
fabrication
(FFF)
subjected
single-edge
notched
bend
(SENB)
tests.
results
revealed
a
significant
improvement
in
strength,
elastic
modulus,
toughness
compared
unreinforced
PLA.
0°/+45°/90°
orientation
exhibited
3.6%
increase
while
+45°/−45°
displayed
29.9%
enhancement
modulus
(259.12
MPa)
relative
neat
PLA
(199.34
MPa√m).
An
inverse
correlation
between
strength
was
observed,
attributed
mechanisms
such
crack
deflection,
bridging,
pull-out
facilitated
by
multi-directional
orientations.
FEA
simulations
incorporating
transversely
isotropic
material
model
J-integral
approach
conducted
using
Abaqus,
accurately
predicting
trends
maximum
discrepancy
8%
data.
Fractographic
elucidated
strengthening
mechanisms,
highlighting
potential
tailoring
optimize
performance
for
structural
applications.
Materials Testing,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 6, 2025
Abstract
In
this
study,
the
effects
of
infill
ratio,
layer
thickness,
nozzle
temperature,
and
raster
angle
on
flexural
strength
polylactic
acid
material
were
investigated
through
microstructural
analysis.
A
total
10
different
sample
groups
produced,
changing
parameters
filling
ratio
(20,
40,
60,
80
%),
thickness
(0.15,
0.20,
0.25,
0.30
mm),
temperature
(210,
220,
230
°C),
(±45°,
0/90°).
Three-point
bending
tests
conducted
using
Shimadzu
machine,
results
used
to
calculate
maximum
stress,
modulus
elasticity,
strain
values.
The
showed
that
values
stress
elasticity
vary
significantly
with
changes
in
angle.
Scanning
Electron
Microscopy
(SEM)
images
obtained
from
longitudinal
cross-section
samples
failure
area.
identify
gaps
between
beads,
voids,
porosity,
filament
rapture,
pull-out
breakage,
elongation,
necking
patterns
samples.
variations
properties
verified
by
SEM
micrographs
Materials Testing,
Год журнала:
2024,
Номер
66(9), С. 1510 - 1518
Опубликована: Авг. 13, 2024
Abstract
In
this
study,
a
novel
multi-cell
crash
box
was
designed
and
produced
using
15
%
short
carbon
fiber
reinforced
polyethylene
terephthalate
(CF15PET),
polylactic
acid
(PLA),
acrylonitrile
butadiene
styrene
(ABS)
filaments
one
of
the
additive
manufacturing
methods,
melt
deposition
method
(FDM).
All
structures’
maximum
force
energy
absorption
performances
have
been
investigated.
As
result
test,
it
determined
that
box,
which
best
meets
high
folding
properties,
expected
features
in
boxes,
has
parts
manufactured
ABS
CF15PET
materials.
According
to
test
result,
found
is
11
higher
than
approximately
4.5
PLA.
It
response
value
5
12
materials
can
be
used
boxes
form
an
idea
about
design
by
designing
analyzing
finite
element
programs.
Materials Testing,
Год журнала:
2024,
Номер
66(10), С. 1557 - 1563
Опубликована: Авг. 8, 2024
Abstract
This
research
is
the
first
attempt
in
literature
to
combine
design
for
additive
manufacturing
and
hybrid
flood
algorithms
optimal
of
battery
holders
an
electric
vehicle.
article
uses
a
recent
metaheuristic
explore
optimization
holder
A
polylactic
acid
(PLA)
material
preferred
during
manufacturing.
Specifically,
both
algorithm
(FLA-SA)
water
wave
optimizer
(WWO)
are
utilized
generate
holder.
The
hybridized
with
simulated
annealing
algorithm.
An
artificial
neural
network
employed
acquire
meta-model,
enhancing
efficiency.
results
underscore
robustness
achieving
designs
car
components,
suggesting
its
potential
applicability
various
product
development
processes.
