Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
30, С. 9048 - 9060
Опубликована: Май 1, 2024
Abstract—The
aim
of
this
paper
is
to
investigate
the
grinding
characteristics
and
mechanism
2D-
SiC/SiC
composites
with
0°/90°
orthogonal
anisotropic
structured
surfaces
under
different
scratching
fiber
angles
(angle
between
scratch
direction
orientation,
SFA).
A
series
surface
single
abrasive
tests
were
conducted.
The
effects
angle
on
force,
morphology
roughness
investigated.
results
show
that
force
at
are
in
order
0°>
30°>
45°;
SFA
also
has
an
important
effect
microstructure.
2D-SiCf/SiC
was
analyzed
by
single-particle
test.
provide
strong
evidence
differences
produced
during
process.
advantages
ultrasonic
vibration
over
conventional
machining
further
identified
comparing
specific
energies.
This
study
elucidates
damage
behavior
2D-Sicf/sic
correlation
influence
angle,
these
a
new
guideline
for
vibratory
woven
fiber-reinforced
ceramic
matrix
quality.
Chinese Journal of Aeronautics,
Год журнала:
2023,
Номер
36(7), С. 1 - 24
Опубликована: Фев. 11, 2023
Presently,
the
service
performance
of
new-generation
high-tech
equipment
is
directly
affected
by
manufacturing
quality
complex
thin-walled
components.
A
high-efficiency
and
these
components
creates
a
bottleneck
that
needs
to
be
solved
urgently
in
machinery
manufacturing.
To
address
this
problem,
collaborative
structure
shape
surface
integrity
has
emerged
as
new
process
can
shorten
processing
cycles,
improve
machining
qualities,
reduce
costs.
This
paper
summarises
research
status
on
material
removal
mechanism,
precision
control
shape,
machined
intelligent
technology
Numerous
solutions
technical
approaches
are
then
put
forward
solve
critical
problems
high-performance
thin-wall
The
development
status,
challenge
tendency
technologies
also
discussed.
Journal of Agricultural and Food Chemistry,
Год журнала:
2023,
Номер
71(12), С. 4982 - 4989
Опубликована: Март 15, 2023
In
recent
years,
growing
food
safety
and
quality
concerns
have
emerged
created
an
urgent
need
for
the
development
of
rapid
reliable
control
technologies.
This
study
proposes
a
novel
surface-enhanced
Raman
spectroscopy
(SERS)
substrate
printing
technology
that
utilizes
commercial
filter
paper
functionalized
by
silver
nanoparticles.
We
modified
Automatic
TLC
Sampler
using
two-dimensional
(2D)
printer.
The
modification
allows
various
sampling
modes
which
can
be
applied
to
2D
printing.
shape
size
nano
on
were
determined,
sensitivity,
uniformity,
stability
evaluated.
As
demonstrated
experimental
outcomes,
proposed
is
highly
sensitive
reproducible,
is,
limit
quantitation
was
10-5
mg/kg,
spot-to-spot
block-to-block
intensity
variations
below
4.2%.
also
successfully
pears
apples
thiram
recognition,
yielding
outstanding
detectability
down
2.5
×
10-6
3.9
10-7
mg/mL
(equal
10-3
10-4
mg/kg),
respectively.
These
well
maximum
residue
(7
mg/kg).
More
importantly,
linear
relationships
between
levels
SERS
allow
monitoring
minute
in
agricultural
insecticide
residues.
detection
method
realize
situ
with
strong
signal
fingerprint.
Materials & Design,
Год журнала:
2022,
Номер
225, С. 111438 - 111438
Опубликована: Ноя. 29, 2022
To
calculate
the
shear
yield
stress
and
effect
of
gold
film
thickness
on
sandwich
structures,
a
force
transducer
was
used
to
measure
cutting
forces
during
nanoskiving,
an
orthogonal
model,
which
considered
liquid
parameters,
for
analysis
slicing
process.
Sandwich
structures
with
thicknesses
50
nm
150
were
prepared.
The
contact
angles
between
water
surface
in
trough
its
edge
line
0°
(horizontal)
35°
(protruding)
slicing.
feed
slab
should
be
<
430
50-nm
344
150-nm
ensure
dimensional
accuracy.
structure
had
higher
than
pure
epoxy
structure.
Increasing
angle
decreased
strength
structure,
thereby
facilitating
cutting.
In
accordance
comparison
segmented
cutting-force
curves
this
characteristic
is
result
different
adhesions
resin
metal
film.
Thus,
researchers
improve
material
preparation
reduce
adhesion
stability
