Journal of Composite Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 12, 2024
The
multi-layered
(fiber/metal)
structure
of
glass
fibre
aluminium
reinforced
epoxy
(GLARE)
makes
it
difficult
to
obtain
acceptable
damage-free
holes
that
meet
aerospace
standards.
This
paper
investigated
the
effects
tool
geometry
and
drilling
parameters
on
reducing
delamination
damage
uncut
fibers
at
hole
exit
surface
in
GLARE.
surfaces
were
examined
by
scanning
electron
microscope
(SEM)
various
magnifications.
In
addition,
deep
neural
network
(DNN)
long-short-term
memory
(LSTM)
machine
learning
models
used
predict
(F
da
),
fiber
(UCF),
thrust
forces
using
experimental
data.
No
positive
contribution
special
was
observed,
while
standard
found
be
ideal
for
conditions.
Analysis
variance
(ANOVA)
revealed
feed
rate
contributed
57.83%
damage,
74.31%
92.33%
force,
respectively.
SEM
analysis
high
deformation
zones
aluminum
layers
fracture
separation
polymer
(GFRP)
layers.
DNN
LSTM
provide
accurate
predictions
with
R
2
values
greater
than
95%
98%,
Journal of Reinforced Plastics and Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
The
objective
of
this
study
is
to
investigate
the
effects
alumina
filler
content
and
NaOH-treated
Roselle
fibers
on
mechanical,
thermal,
biodegradation,
tribological
properties
while
identifying
optimal
conditions
for
eco-friendly
applications.
Compression
molding
was
employed
fabricate
composites,
results
revealed
significant
improvements
in
performance
with
chemical
treatment
content.
Mechanical
testing
showed
that
10%
composite
exhibited
highest
tensile,
flexural,
impact
strengths
due
enhanced
interfacial
bonding
uniform
dispersion.
Thermal
analysis
demonstrated
improved
stability,
offering
best
thermal
degradation
resistance.
Biodegradation
studies
indicated
slower
weight
loss
alumina-filled
highlighting
their
environmental
durability.
Tribological
evaluations
achieved
lowest
specific
wear
rate
(SWR)
coefficient
friction
(COF),
supported
by
SEM
showing
minimal
debris
surface
damage.
Optimization
using
a
simulated
annealing
algorithm
identified
ideal
(sliding
velocity:
6.6
m/s,
sliding
distance:
500.33
m,
content:
10.62%)
minimized
SWR
(13.28
×
10⁻⁵
mm³/Nm)
COF
(0.278).
These
findings
provide
valuable
insights
into
fiber
composites
sustainable
applications
automotive
packaging
industries.
Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 14, 2025
Abstract
This
study
examines
how
NaOH
treatment
and
alumina
filler
affect
the
mechanical
properties,
water
absorption,
thermal
degradation,
sliding
wear
of
epoxy
composites
reinforced
with
pineapple
leaf
fiber.
greatly
improved
composites'
tensile,
flexural,
impact
strengths
by
strengthening
bond
between
fiber
matrix.
Furthermore,
incorporation
further
elevated
properties.
The
composite
10%
showed
peak
values
41.4
MPa
in
tensile
strength,
63.8
flexural
37.6
kJ/m
2
strength.
Because
hygroscopic
parts
were
removed
from
treated
composites,
they
absorbed
much
less
water.
15%
had
lowest
absorption
at
18%
after
192
h.
Thermal
degradation
analysis
that
stability,
having
highest
char
residue
(15.3%)
700°C.
Sliding
tests
reinforcement
significantly
reduced
specific
rate
(SWR)
coefficient
friction
(COF).
an
SWR
0.2598
×
10
−5
mm
3
/Nm
a
COF
0.103
when
120
cm/s,
45
N
load
over
1500
m
distance.
A
scanning
electron
microscopy
found
untreated
experienced
severe
abrasive
wear,
while
exhibited
mild
adhesive
wear.
shows
treating
PALF
adding
enhance
their
mechanical,
thermal,
tribological
making
them
suitable
for
high‐performance
industrial
applications.
Highlights
Alumina
(41.4
MPa)
strength
(63.8
MPa).
NaOH‐treated
moisture,
enhancing
durability.
stability
improved,
15.3%
700°C
alumina.
Optimized
achieved
(0.2598
/Nm).
Artificial
neural
network
response
surface
methodology
accurately
predicted
optimized
behavior.
Advanced Engineering Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
This
study
aims
to
optimize
and
analyze
the
machinability
of
Al–Cu–SiC–GNP
composites
using
advanced
techniques
such
as
machine
learning,
(RSM),
(ANOVA).
The
are
fabricated
an
ex
situ
stir
casting
process
with
varying
reinforcement
percentages
silicon
carbide
(SiC)
graphene
nanoplatelets
(GNP)
(2,
3,
5%),
their
is
evaluated
during
water
jet
machining.
key
parameters
analyzed
material
removal
rate,
surface
roughness
(
R
a
),
kerf
width.
Experimental
findings
reveal
that
significantly
influence
machinability.
Optimal
results
achieved
5%
SiC,
3%
GNP,
300
MPa,
120
mm
min
−1
,
balancing
enhanced
mechanical
properties
efficient
ML
models,
including
decision
tree,
random
forest,
support
vector
machine,
artificial
neural
network
(ANN),
applied
predict
machining
outcomes.
Among
these,
ANN
model
exhibits
highest
predictive
accuracy,
capturing
complex
nonlinear
interactions
between
input
parameters.
also
validates
through
RSM
ANOVA,
confirming
statistical
significance
on
research
provides
robust
framework
for
optimizing
hybrid
composite
offers
valuable
insights
into
relationship
content,
parameters,
performance
outcomes,
making
it
highly
applicable
aerospace
automotive.