Micromachines,
Год журнала:
2024,
Номер
16(1), С. 42 - 42
Опубликована: Дек. 30, 2024
Accurate
and
efficient
measurement
of
deposited
droplets'
volume
is
vital
to
achieve
zero-defect
manufacturing
in
inkjet
printed
organic
light-emitting
diode
(OLED),
but
it
remains
a
challenge
due
featurelessness.
In
our
work,
coherence
scanning
interferometry
(CSI)
utilized
measure
the
volume.
However,
CSI
redundant
sampling
image
degradation
led
by
sample's
transparency
decrease
efficiency
accuracy.
Based
on
prior
strong
representation
for
context,
novel
method,
via
fringe
distribution
module
(VMFD),
proposed
directly
single
interferogram
without
sampling.
Firstly,
3D
point
spread
function
(PSF)
imaging
modeling
relate
image.
Secondly,
Zernike
PSF
(ZTP)
efficiently
compute
aberrations
PSF.
Then,
physics
aberration
restoration
network
(PARN)
designed
remove
channel
Transformer
U-net
architecture.
The
long
term
context
learned
PARN
beneficial
restoration.
restored
fringes
are
used
droplet's
constrained
regression
(CRN)
module.
Finally,
performances
public
datasets
experiments
show
promising
deblurring,
precision
efficiency.
Tribology International,
Год журнала:
2024,
Номер
194, С. 109562 - 109562
Опубликована: Март 19, 2024
The
relationships
between
the
geometric
features
of
material
surfaces
and
topographically
related
phenomena,
such
as
wetting,
change
with
scale
observation.
In
these
studies,
multiscale
analyzes
allow
characterizing
electrical
discharge
machining
parameters,
complex
surface
topographic
structures
contact
angles.
Importantly,
it
was
possible
to
indicate
best
scales
for
observing
phenomena
lubricant
flow
on
electro-discharged
identify
key
parameters
affecting
angle.
This
paper
proposes
scale-dependent
angle
electro-discharge
machined
Ti6Al4V
alloy
biomedical
implant
applications.
Liquids
imitating
synovial
fluid
in
joints
were
used
lubricants.
research
focuses
comparing
impact
energy
microtexture,
chemical
composition,
free
energy.
analysis
lubrication
behavior
micro-textured
mechanics
co-determines
tribological
properties.
results
confirm
effectiveness
modeling
specific
wettability
bioinspired
Materials,
Год журнала:
2024,
Номер
17(23), С. 5716 - 5716
Опубликована: Ноя. 22, 2024
Surface
microgeometry
created
by
the
energy
of
electric
discharges
is
related
to
surface
wetting
behavior.
These
relationships
change
depending
on
scale
observation.
In
this
work,
contact
angles
correlated
with
complexity
AA
6060
after
electro-discharge
machining
were
analyzed
at
different
observation
scales.
This
research
focuses
methodology
selecting
best
scales
for
observing
phenomena
irregular
surfaces,
as
well
indicating
topographic
characterization
parameters
in
relation
Additionally,
geometric
features
that
determine
angle
identified.
study,
surfaces
an
aluminum
alloy
are
rendered
using
focus
variation
3D
microscopy
and
described
standardized
ISO,
area-scale,
length-scale
parameters.
The
also
confirms
it
possible
design
wettability,
including
its
hydrophilicity
hydrophobicity,
electrical
discharge
static
dynamic
behavior
liquids
relevant
mechanics
was
determined.
Applied Sciences,
Год журнала:
2024,
Номер
14(6), С. 2531 - 2531
Опубликована: Март 17, 2024
This
paper
proposes
a
series
of
experimental
determinations
carried
out
with
the
aim
generating
new
conclusions
regarding
ability
3D-printed
gears
to
be
integrated
into
mechanisms
without
lubrication.
The
main
factors
that
influence
appearance
wear
in
non-lubricated
contact
are
sliding
speed,
material
hardness,
surface
finish,
geometry,
and
microstructure.
tests
considered
type
from
which
they
were
made
3D
printing
technology
type.
For
testing
gear
wheels,
mechatronic
setup
was
consisting
two
shafts
adjustable
axial
distances,
wheel
loading
system
gears,
an
electric
motor,
command-and-control
system.
In
terms
materials,
four
types
materials
monitored:
PA
(polyamide),
PLA
(polylactic
acid),
ABS
(acrylonitrile
butadiene
styrene)
PP
(photopolymer).
evaluation
by
checking
gearing
on
flanks
(Frenco
ZWP
06)
scanning
ATOS
CORE
135
scanner.
failed
meet
structural
integrity
standards
after
tests.
exhibited
superior
resistance
abrasive
compared
whereas
generally
demonstrated
stronger
integrity.
Applied Sciences,
Год журнала:
2025,
Номер
15(4), С. 2245 - 2245
Опубликована: Фев. 19, 2025
This
paper
conducts
a
comprehensive
experimental
comparison
of
two
widely
used
additive
manufacturing
(AM)
processes,
Fused
Deposition
Modeling
(FDM)
and
Stereolithography
(SLA),
under
standardized
conditions
using
the
same
test
geometries
protocols.
FDM
parts
were
printed
with
both
Polylactic
Acid
(PLA)
Acrylonitrile
Butadiene
Styrene
(ABS)
filaments,
while
SLA
general-purpose
photopolymer
resin.
Quantitative
evaluations
included
surface
roughness,
dimensional
accuracy,
tensile
properties,
production
cost,
energy
consumption.
Additionally,
environmental
considerations
process
reliability
assessed
by
examining
waste
streams,
recyclability,
failure
rates.
The
results
indicate
that
achieves
superior
quality
(Ra≈2μm
vs.
12–13μm)
tolerances
(±0.05mm
±0.15–0.20mm),
along
higher
strength
(up
to
70MPa).
However,
provides
notable
advantages
in
cost
(approximately
60%
lower
on
per-part
basis),
speed,
efficiency.
Moreover,
from
an
perspective,
is
more
favorable
when
biodegradable
PLA
or
recyclable
ABS,
whereas
resin
hazardous.
Overall,
study
highlights
no
single
universally
superior.
offers
rapid,
cost-effective
solution
for
prototyping,
excels
precision
finish.
By
presenting
detailed,
data-driven
comparison,
this
work
guides
engineers,
product
designers,
researchers
choosing
most
suitable
AM
technology
their
specific
needs.
Measurement,
Год журнала:
2024,
Номер
235, С. 114988 - 114988
Опубликована: Май 23, 2024
The
precision
of
surface
roughness
determination
using
ISO
25178
parameters
relies
on
various
factors
that
directly
impact
the
measurement
process.
In
industry
applications,
contactless
reduces
data
collection
time.
However,
it
introduces
several
potential
errors,
including
those
stemming
from
environment.
One
main
types
errors
encountered
during
topography
analysis
is
noise,
which
arises
different
external
disturbances.
High-frequency
noise
particularly
studied
as
a
result
vibration.
present
study,
laser-texture
cross-hatched
topographies
were
analysed
results
obtained
white
light
interference
measurements.
Measurement
was
defined
based
noisy
data,
also
called
surface,
filter
decomposition
methods.
This
separation
technique
supported
with
power
spectral
analysis,
autocorrelation
function
applications
and
texture
direction
characterisation.
It
suggested
to
conduct
comprehensive
study
enhance
understanding
texturing
direction.
Various
filtration
techniques
studied,
namely
robust
Gaussian,
spline,
fast
Fourier
transform
morphological
closing-opening
filters.
proposed
procedure
validated
against
variations
in
values
parameters.
Validating
approach,
noise-sensitive
compared
same
but
received
by
averaging
three
repeated
measurements,
international
standards.
advantage
method
standards
reducing
time
when
must
be
averaged.
conclusion,
for
high-frequency
introduced
through
application
procedure.
Applied Sciences,
Год журнала:
2025,
Номер
15(6), С. 2976 - 2976
Опубликована: Март 10, 2025
The
aim
of
the
study
is
a
multi-criteria
comparative
evaluation
robots
cooperating
with
humans
in
single-
and
dual-arm
variants
used
for
process
precise
assembly
complex
parts.
RobotStudio
simulation
software
Signal
Analyzer
add-on
was
analyses.
These
studies
were
conducted
as
case
studies.
A
robotic
station
designed
computer
motherboard
two
robot
programmed
to
perform
task
while
maintaining
same
motion
parameters
functions
both.
Then,
TCP
trajectories
associated
analyzed,
well
monitoring
signals
from
controller
during
simulation,
such
time,
speed,
acceleration
energy
consumption.
costs
profitability
also
calculated.
percentage
share
tasks
performed
divided
into
free
movements.
differences
between
this
include
21
s
single-arm
versus
14
robots.
main
influence
on
achieving
speed
length
robot’s
path.
In
most
cases,
maximum
200
mm/s
achieved.
proved
be
more
energy-efficient,
but
20%
faster,
which
long
run
profitable
robot.
paid
off
after
eight
months
operation.
presented
paper,
assembling
using
collaborative
robots,
provides
guide
conducting
similar
analyses
different
stations.
Simulations
enabled
reliable
verification
technological
processes,
supporting
design
production
processes
analysis
several
solutions.
Machines,
Год журнала:
2024,
Номер
12(3), С. 188 - 188
Опубликована: Март 13, 2024
The
present
paper
describes
a
study
conducted
at
the
request
of
operator
machining
center
equipment.
observed
undesirable
indicators
in
terms
increased
backlash
and
vibration
milling
head
poor
quality
machined
surfaces.
Vibration
measurements
vibrodiagnostics
were
carried
out
before
disassembling
idle
state.
bearings,
lubricant,
friction
regime
analyzed
next
step.
vibrodiagnostic
methods
used
included
VEL,
ACC,
EN2,
EN3,
EN4,
with
recommended
limits
conforming
to
STN
ISO
10816-3.
values
obtained
indicated
problem
exceeding
limit
values.
After
disassembly
abrasive
wear,
corrosion,
improper
lubricant
conditions
detected.
Lubricant
analysis
showed
presence
corrosive
particles,
indicating
an
unsatisfactory
regime.
Determining
optimum
temperature
effect
on
torque
constituted
other
aspects
study.
Inspection
bearing
microgeometry
confirmed
roundness.
Furthermore,
assembly
tapered
roller
bearings
axial
preload
was
focus
stiffness,
accuracy,
life.
results
that
improves
shaft
guidance
accuracy
load
distribution,
promoting
reliable
operation
extending
