Fiber-reinforced
composites
with
the
Bouligand
structure
exhibit
remarkable
mechanical
properties
due
to
intricate
arrangement
of
fibers.
In
this
study,
we
propose
a
coarse-graining
(CG)
model
specifically
designed
capture
behavior
structures.
The
incorporates
bonded
interactions
represent
fibers
and
employs
double-well
potential
describe
non-bonded
within
matrix.
Using
model,
investigate
fracture
mechanics
structures,
particular
focus
on
emergence
helicoidal
cracks.
Our
primary
objective
is
validate
hypothesis
that
these
twisting
cracks,
which
align
fiber
orientation,
contribute
local
hardening
mechanisms.
By
hindering
growth
individual
mechanisms
facilitate
nucleation
multiple
thereby
promoting
delocalization
effect
material.
Through
extensive
simulations
analysis,
confirm
validity
our
hypothesis.
presence
cracks
indeed
induces
mechanisms,
making
it
more
challenging
for
propagate.
This
phenomenon
effectively
spreads
damage,
dissipating
energy
across
larger
volumes
Consequently,
toughness
enhanced,
as
e
ect
ectively
mitigates
concentration
damage.
These
findings
provide
valuable
insights
into
structures
shed
light
underlying
responsible
their
exceptional
performance.
Moreover,
CG
offers
practical
efficient
approach
studying
understanding
complex
fiber-reinforced
composites.
ability
simulate
analyze
opens
up
new
avenues
designing
optimizing
advancedmaterials
enhanced
damage
resistance.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Abstract
Flexible
electromechanical
sensors
frequently
suffer
from
unexpected
impact
loadings
caused
by
slipping,
collisions
and
falling
objects,
to
name
a
few.
Without
sufficient
protection,
these
undesired
impacts
would
lead
critical
mechanical
instability
even
damage
flexible
sensors,
resulting
in
restricted
measurement
range
imprecise
sensing.
Thus,
it
is
of
significance,
but
still
fresh
challenge
enhance
the
stability
energy‐absorption
capacity
under
impacts.
Here,
multi‐design
strategy
proposed
construct
an
interpenetrating‐phase
cellulose‐acetate
composite
(IPC
2
)
architecture
for
impact‐intensive
sensing
applications.
The
external
structure
mimics
bellows‐morphology
beverage‐straws
that
deform
programmed
loading
direction
stability,
while
internal
conductive
core
has
co‐continuous
can
efficiently
absorb
energy.
Systematic
numerical
analysis
experimental
tests
demonstrate
IPC
presents
excellent
structural
cyclic
performance
unique
combination
exceptional
specific
energy
absorption
(SEA
=
2.66±1.2
kJ
kg
−1
),
low
density
(
ρ
720±10
m
−3
properties
(GF≈39.6).
Remarkably,
recovery
behaviors
terms
shape
electrical
signals
show
good
repeatability
reliability.
This
study
offers
new
framework
exploit
potentialities
with
protective
functions
commercial
values.
Materials,
Год журнала:
2025,
Номер
18(2), С. 273 - 273
Опубликована: Янв. 9, 2025
Interpenetrating
phase
composites
are
a
novel
class
of
heterogeneous
structures
that
have
recently
gained
attention.
In
these
types
composites,
one
the
phases
is
topologically
continuous
and
can
maintain
its
structural
integrity
even
if
other
removed.
These
generally
fabricated
by
casting,
where
reinforcement
penetrates
into
precursor
matrix
as
phase.
However,
following
dilemma
arises:
same
two
combined
powder
metallurgical
routes
(due
to
differences
in
fabrication
interfacial
conditions),
they
still
be
called
interpenetrating
composites?
The
added
matrix,
any
conventional
composite
processing
methods.
Most
importantly,
does
not
interpenetrate
present
Review
discusses
various
employed
for
attempts
identify
correct
nomenclature
via
approach.
Virtual and Physical Prototyping,
Год журнала:
2025,
Номер
20(1)
Опубликована: Янв. 15, 2025
Traditional
fabrication
methods
for
metal–ceramic
composites
often
struggle
to
achieve
the
level
of
control
needed
material
on-demand
design
and
property
optimisation,
despite
potential
enhanced
performance.
This
study
presents
a
novel
approach
that
overcomes
these
limitations
by
combining
extrusion-based
additive
manufacturing
pressure
infiltration
techniques,
which
enables
compositionally
graded
Al2O3–B4C/Al
layered
with
tailored
properties.
Precise
over
B4C/Al2O3
ratio
allows
fine-tuning
key
mechanical
properties,
including
bending
strength,
fracture
toughness,
work.
The
exhibit
anisotropic
behaviour,
performance
influenced
ceramic
composition,
loading
direction,
layer
spacing.
A
notable
observation
is
enhancement
damage
tolerance
through
multi-crack
propagation
as
Al2O3
content
in
layers
increases.
Additionally,
wear
tests
demonstrate
exceptional
abrasion
resistance,
highlighting
synergistic
effects
B4C
hardness
toughness.
research
establishes
strategies
paving
way
their
implementation
demanding
applications
where
combination
resistance
critical.
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
presents
the
classification
and
healing
mechanisms
of
self-healing
materials,
with
an
emphasis
on
expounding
latest
progress
challenges
superhard
materials.
Biomimetics,
Год журнала:
2024,
Номер
9(9), С. 545 - 545
Опубликована: Сен. 9, 2024
Biological
structures
optimized
through
natural
selection
provide
valuable
insights
for
engineering
load-bearing
components.
This
paper
reviews
six
key
strategies
evolved
in
nature
efficient
mechanical
load
handling:
hierarchically
structured
composites,
cellular
structures,
functional
gradients,
hard
shell–soft
core
architectures,
form
follows
function,
and
robust
geometric
shapes.
The
also
discusses
recent
research
that
applies
these
to
design,
demonstrating
their
effectiveness
advancing
technical
solutions.
challenges
of
translating
nature’s
designs
into
applications
are
addressed,
with
a
focus
on
how
advancements
computational
methods,
particularly
artificial
intelligence,
accelerating
this
process.
need
further
development
innovative
material
characterization
techniques,
modeling
approaches
heterogeneous
media,
multi-criteria
structural
optimization
advanced
manufacturing
techniques
capable
achieving
enhanced
control
across
multiple
scales
is
underscored.
By
highlighting
holistic
approach
designing
components,
advocates
adopting
similarly
comprehensive
methodology
practices
shape
the
next
generation
