The
use
of
personal
protective
equipment
(PPE)
has
gained
universal
acceptance
as
a
critical
measure
for
safeguarding
individuals
against
hazardous
environments,
including
exposure
to
infectious
agents
and
harmful
substances.
increased
PPE
across
various
industries
resulted
in
significant
rise
its
consumption.
Primarily,
the
steady
surge
global
COVID
cases
caused
sudden
demand
PPE.
However,
indiscreet
irrational
disposal
method
can
potentially
augment
impending
climate
change
problem.
In
prevailing
situation,
there
is
need
assess
their
current
mode
terms
carbon
emissions.
present
study
aims
perform
footprint
analysis
(CFA)
on
landfilling,
incineration,
recycling
methods
two
scenarios
(1
100
million
PPE).
results
indicate
that
application
option
could
contribute
situation
with
conceivably
positive
emissions
net
savings
approximately
0.159
kg
CO2e/million
contrast,
it
shows
associated
incineration
are
substantially
higher
than
other
more
0.78
Additionally,
transportation
factors
such
haulage
distance
vehicle
type
significantly
influence
overall
For
scenario
II,
from
landfilling
increase
by
383%
390%,
respectively,
compared
100%
incineration.
Based
emissions,
order
preference
three
>
which
consistent
both
scenarios.
hypothetical
infinite
periods,
ten
times
surveyable
period
30
years.
These
findings
highlight
sustainable
waste
management
reduce
environmental
impact.
Journal of Materials Research and Technology,
Journal Year:
2023,
Volume and Issue:
27, P. 3900 - 3913
Published: Nov. 1, 2023
This
review
systematically
examines
the
use
of
additive
manufacturing
(AM),
also
known
as
3D
printing
(3DP),
in
various
aspects
military
applications
such
firearms,
armor
and
ballistic
resistant
structures,
including
those
bioinspired.
The
main
goal
is
to
provide
a
comprehensive
exploration
AM
applications.
materials
structures
created
using
technologies
are
analyzed
reported.
Dynamic
loading,
impact
via
Charpy
Izod
tests
were
explored
search,
although
not
considered
results
be
typically
conducted
at
low
strain
rates,
far
from
real
solicitation.
Recently,
an
increase
has
been
found,
particularly
gun
prototypes
fabricated
diverse
with
AM.
Although
innovation,
costs,
clear
advantages
these
devices
printing,
there
limitations,
worrying
panorama
unclear
regulations
that
prevent
weapons
eventually
reaching
ordinary
citizens.
Current
perspectives,
opportunities,
challenges
discussed.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(35)
Published: July 14, 2024
Carbon
fiber
(CF)-reinforced
polymers
(CFRPs)
demonstrate
potential
for
use
in
personal
protective
equipment.
However,
existing
CFRPs
are
typically
rigid,
nonrecyclable,
and
lack
of
tearing
resistance.
In
this
study,
flexible,
recyclable,
resistant
polyurethane
(PU)-CF
composites
fabricated
through
complexation
reversibly
cross-linked
PU
elastomer
binders
with
CF
fabrics.
The
PU-CF
possess
a
high
strength
767
MPa
record-high
fracture
energy
2012
kJ
m
Materials,
Journal Year:
2023,
Volume and Issue:
16(11), P. 3964 - 3964
Published: May 25, 2023
While
nonwoven
fabrics
have
existed
for
several
decades,
their
usage
in
personal
protective
equipment
(PPE)
has
been
met
with
a
rapid
surge
of
demands,
part
due
to
the
recent
COVID-19
pandemic.
This
review
aims
critically
examine
current
state
PPE
by
exploring
(i)
material
constituents
and
processing
steps
produce
fibers
bond
them,
(ii)
how
each
fabric
layer
is
integrated
into
textile,
assembled
textiles
are
used
as
PPE.
Firstly,
filament
manufactured
via
dry,
wet,
polymer-laid
fiber
spinning
methods.
Then
bonded
chemical,
thermal,
mechanical
means.
Emergent
processes
such
electrospinning
centrifugal
unique
ultrafine
nanofibers
discussed.
Nonwoven
applications
categorized
filters,
medical
usage,
garments.
The
role
layer,
its
role,
textile
integration
Finally,
challenges
stemming
from
single-use
nature
PPEs
discussed,
especially
context
growing
concerns
over
sustainability.
Then,
emerging
solutions
address
sustainability
issues
innovations
explored.
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
23, P. 102576 - 102576
Published: July 17, 2024
Fabric-layered
composites
play
a
crucial
role
in
safety
and
surveillance
applications,
making
it
imperative
to
accurately
predict
their
impact
behavior.
This
research
focuses
on
creating
machine-learning
model
the
behavior
of
fabric-stacked
composites,
specifically
carbon
Kevlar
fabrics.
Low-velocity
tests
were
performed
with
varying
parameters,
energy
laminate
thickness
information
used
train
models
properties
such
as
force,
displacement,
absorbed
energy.
It
was
observed
that
force
increased
by
118.5
%
carbon-laminated
fibers
175.8
Kevlar-laminated
fibers,
while
hybrid
layer
showed
101.4
increase
upon
from
16J.
Displacement
can
affect
stability
layered
structure;
thus,
similar
stacking
sequence
is
less
stable
than
laminated
structure.
In
terms
energy,
layers
increase,
fiber
absorbs
4.8
times
more
structures
absorb
3
at
higher
Furthermore,
four
machine
learning
investigate
identical
mixed-layered
composites.
The
displacement
predicted
accuracy
using
polynomial
regression
model,
achieving
80
89
accuracy,
respectively.
support
vector
approximately
96
accuracy.
continuing,
experimental
results
closely
matched
predictions
made
other
utilized
this
study.
Additionally,
importance
distinctive
features
influence
performance
learning-based
interpreted
transposed
dependency
plots.
Various
failure
modes
fabric
also
identified,
providing
insights
enhance
stacked
materials.
Journal of Composite Materials,
Journal Year:
2024,
Volume and Issue:
58(9), P. 1109 - 1121
Published: Feb. 17, 2024
Low
damage
tolerance
and
residual
strength
are
the
main
drawbacks
of
carbon
fiber
composite
laminates
that
limit
their
application
in
many
lightweight
structures.
This
study
demonstrates
exceptional
high
fracture
toughness
carbon-Kevlar
hybrid
laminate,
where
Kevlar
plies
placed
between
two
face
sheets.
Flexural
after
mode
I
translaminar
were
evaluated
using
three-point
bending
single-edge
notched
tests,
respectively.
The
mechanisms
three
configurations
investigated
micro-computed
tomography
correlated
with
mechanical
responses.
results
showed
laminate
could
sustain
70%
occurs
can
same
for
large
strains,
unlike
laminates,
they
both
lose
integrity
breakage.
Moreover,
this
200%
170%
larger
specific
absorbed
energy
than
improvement
be
justified
by
propagation
breakage
at
different
positions
core
delamination
interface
allowed
dissipation
during
fracture.
Additionally,
it
21%
42.7%
absolute
toughness,
respectively,
laminate.
