Composites Part B Engineering,
Journal Year:
2024,
Volume and Issue:
272, P. 111203 - 111203
Published: Jan. 5, 2024
Selective
laser
melting
(SLM)
of
multi-material
structures
(MMS)
is
significance
because
it
allows
for
bespoke
structural
innovation
and
high-accuracy
process
tailoring.
However,
most
the
currently
developed
loose
powder-based
SLM
techniques
MMS
are
limited
by
long
changeover
time
potential
cross-contamination
between
materials.
To
address
these
issues,
a
novel
Metal
Additive
Manufacturing
using
Powder
Sheets
(MAPS)
technique
proposed
printing
within
single
process.
It
utilizes
flexible
powder
sheets
as
feedstock
material,
which
composed
metal
powder-polymer
binder
composites.
The
printability
MAPS
assessed
through
fabrication
three-phase
SS304-IN718-SS304
composites
with
increased
geometric
dimensions
on
SS316
baseplates.
effects
part
size
evolution
melt-pool
morphology
formation
defects
during
investigated
experimental
characterizations
computational
modeling.
results
show
that
when
fabricating
larger
MMS,
use
longer
scan-vector
easily
leads
to
such
lack-of-fusion
porosity,
balling
cracks.
This
due
duration
inter-hatch
cooling
time,
reduced
amount
thermal
accumulation
higher
degree
residual
stresses.
By
adopting
an
island
scanning
strategy,
defect-free
large-size
variations
chemical
composition,
microstructure
microhardness
successfully
printed
MAPS.
method
offers
new
solution
producing
high-quality
MMS.
Throughout
billions
of
years,
biological
systems
have
evolved
sophisticated,
multiscale
hierarchical
structures
to
adapt
changing
environments.
Biomaterials
are
synthesized
under
mild
conditions
through
a
bottom-up
self-assembly
process,
utilizing
substances
from
the
surrounding
environment,
and
meanwhile
regulated
by
genes
proteins.
Additive
manufacturing,
which
mimics
this
natural
provides
promising
approach
developing
new
materials
with
advantageous
properties
similar
materials.
This
review
presents
an
overview
biomaterials,
emphasizing
their
chemical
structural
compositions
at
various
scales,
nanoscale
macroscale,
key
mechanisms
underlying
properties.
Additionally,
describes
designs,
preparations,
applications
bioinspired
multifunctional
produced
additive
manufacturing
different
including
nano,
micro,
micro-macro,
macro
levels.
The
highlights
potential
develop
functional
insights
into
future
directions
prospects
in
field.
By
summarizing
characteristics
biomaterials
synthetic
counterparts,
inspires
development
that
can
be
utilized
applications.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(45)
Published: Aug. 31, 2023
Abstract
It
is
a
long‐standing
challenge
to
break
the
tradeoffs
between
different
mechanical
property
indicators
such
as
strength
versus
toughness
in
design
of
lightweight
lattice
materials.
To
tackle
this
challenge,
hierarchical
metamaterial
with
modified
face‐centered
cubic
(FCC)
cell
configuration,
inspired
by
glass
sponge
skeletal
system,
proposed.
The
proposed
simultaneously
possesses
high
strength,
energy
absorption,
considerable
toughness,
well
controllable
deformation
patterns
through
integration
both
bionic
features
double
diagonal
reinforcement
and
circular
modification.
compressive
absorption
can
reach
69.13
MPa
53.39
J
cm
3
,
respectively.
Furthermore,
also
exhibits
exceptionally
damage
tolerance
compared
existing
metamaterials
comparable
attenuating
stress
concentration
that
may
cause
catastrophic
collapse.
This
approach
combines
advantages
tensile‐dominated
bending‐dominated
lattices.
Quantitatively,
terms
specific
crushing
force
efficiency,
FCC
(MHCFCC)
outperforms
Octet
14.85%,
53.28%,
110.52%,
multibionic
feature
provides
advanced
strategies
for
high‐performance
architected
promising
application
potential.
Materials & Design,
Journal Year:
2023,
Volume and Issue:
227, P. 111810 - 111810
Published: March 1, 2023
This
study
proposes
a
systematic
inverse
design
framework
for
constructing
multistable
mechanical
metamaterials
with
programmable
gradients.
Herein,
we
designed
the
tailored
bistable
cells
precisely
controlled
maximum
instability
forces
through
topology
optimization
approach.
Then,
structures
were
programmed
to
construct
different
target
gradient
snapping
sequences
and
deformation
models.
Consequently,
simulation
experimental
results
showed
feasibility
of
method,
which
successfully
produced
two-
three-dimensional
metamaterial
functions.
Finally,
verified
expected
behaviors
by
testing
specimens
prepared
via
additive
manufacturing.
Overall,
our
findings
show
that
proposed
strategy
offers
new
paradigm
developing
metamaterials.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(9), P. 4490 - 4606
Published: Jan. 1, 2024
This
review
discusses
recent
advances,
challenges,
future
research
directions
and
perspectives
in
biomineralized
tissues,
providing
in-depth
insights
into
derived
guidelines
for
design
preparation
of
high-performance
biomimetic
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(34)
Published: April 8, 2024
Abstract
Real‐time
detection
of
different
physiological
characteristics
is
crucial
for
human
physical
and
mental
health.
A
system
with
multimodal
sensing
capability,
high
sensitivity,
excellent
mechanical
properties,
environmental
stability
highly
desirable,
but
it
still
a
great
challenge.
Inspired
by
the
structural
gradient
biological
tissues,
multifunctional
sensor
based
on
carboxylic
styrene
butadiene
rubber
(XSBR)
sodium
polyacrylate
(PAANa)
non‐covalently
modified
MXenes
prepared
in
this
study,
which
exhibit
distribution
simultaneously
formed
an
orientation
arrangement
at
bottom
matrix
through
formation
hydrogen
bonding
interactions
PAANa.
The
material
shows
considerable
stretchability
244%
strength
7.67
MPa,
electrical
conductivity
55.40
S
m
‒1
,
low
percolation
threshold
2.48
wt%,
response
to
strain
(gauge
factor
906.7
within
98%
strain)
humidity
(relative
resistance
change
530%
11–93%
relative
humidity).
Based
superior
performances
XSBR/PAANa/MXene
composite,
integrated
designed
accurately
detect
respiration
body
movements
various
scales.
This
work
provides
new
perspective
development
novel
biomimetic
functional
applications.
