Materials,
Год журнала:
2023,
Номер
16(5), С. 1865 - 1865
Опубликована: Фев. 24, 2023
Characterization
of
surface
topography,
roughly
divided
into
measurement
and
data
analysis,
can
be
valuable
in
the
process
validation
tribological
performance
machined
parts.
Surface
especially
roughness,
respond
straightly
to
machining
and,
some
cases,
is
defined
as
a
fingerprint
manufacturing.
When
considering
high
precision
topography
studies,
definition
both
S-surface
L-surface
drive
many
errors
that
influence
analysis
accuracy
manufacturing
process.
Even
if
precise
measuring
equipment
(device
method)
provided
but
received
are
processed
erroneously,
still
lost.
From
matter,
S-L
roughness
evaluation
allowing
reduction
rejection
properly
made
In
this
paper,
it
was
proposed
how
select
an
appropriate
procedure
for
removal
L-
S-
components
from
raw
measured
data.
Various
types
topographies
were
considered,
e.g.,
plateau-honed
(some
with
burnished
oil
pockets),
turned,
milled,
ground,
laser-textured,
ceramic,
composite,
generally,
isotropic.
They
different
(stylus
optical)
methods,
respectively,
parameters
ISO
25178
standard
also
taken
consideration.
It
found
commonly
used
available
commercial
software
methods
helpful
surface;
its
usage
requires
response
(knowledge)
users.
Measurement,
Год журнала:
2023,
Номер
222, С. 113640 - 113640
Опубликована: Сен. 30, 2023
In
this
paper,
the
application
of
an
Autocorrelation
Function
for
characterisation
surface
topography
was
validated.
The
roughness
evaluation
turned
composite
surfaces
supported
by
sophisticated
studies
properties,
considering
especially
shape
function.
Details
were
measured
with
optical
method.
selection
procedures
carried
out
based
on
both
profile
and
areal
analyses.
Moreover,
various
types
regular
analysis
methods,
proposed
in
commercial
software,
like
Gaussian
regression
robust
functions,
median
de-noising,
isotropic
Spline,
fast
Fourier
transform
filters,
parameters
from
ISO
25178
standards.
It
found
that
many
common
techniques,
commonly
used
spectral
analysis,
texture
direction,
studies.
hard
thresholding
technique
to
be
valuable
comprehensive
noise-suppression
analysis.
Biomimetics,
Год журнала:
2025,
Номер
10(3), С. 135 - 135
Опубликована: Фев. 24, 2025
The
study
of
biomimetics
allows
for
the
creation
various
structures
inspired
by
nature.
This
work
investigates
impact
using
a
bio-inspired
tool
path
manufacturing
porous
plates
via
3D
printing.
Bouligand
(or
plywood-like)
structure
is
prevalent
in
several
biological
components.
Structures
that
mimicked
design
concerning
were
printed
and
compared
to
uniform
produced
with
rectilinear
pattern
through
mechanical
testing.
Quasi-static
dynamic
tests
conducted
on
specimens
infill
densities
ranging
from
25%
100%.
Results
indicated
displayed
superior
specific
energy
absorption
at
75%
density.
also
provided
excellent
elongation
during
quasi-static
failure—the
fracture
adhered
structure.
In
contrast,
brittle
failure
was
demonstrated
specimen
varying
percentages,
while
enhanced
toughness
polymer
specimens.
Materials,
Год журнала:
2023,
Номер
16(6), С. 2338 - 2338
Опубликована: Март 14, 2023
Aluminium
alloy
sheets
cause
many
problems
in
sheet
metal
forming
processes
owing
to
their
tendency
gall
the
surface
of
tool.
The
paper
presents
a
method
for
determination
kinematic
friction
coefficient
pairs.
(COF)
requires
specialised
devices
that
'simulate'
conditions
specific
areas
formed
sheet.
In
this
article,
behaviour
aluminium
was
determined
using
strip
drawing
test.
1-mm-thick
6082
T6
temper
were
used
as
test
material.
Different
values
nominal
pressures
(4.38,
6.53,
8.13,
9.47,
10.63,
and
11.69
MPa)
different
sliding
speeds
(10
20
mm/min.)
considered.
change
also
realised
with
several
typical
oils
(hydraulic
oil
LHL
32,
machine
LAN
46
engine
SAE
5W-40
C3)
commonly
operations.
Friction
tests
conducted
at
room
temperature
(24
°C).
main
tribological
mechanisms
accompanying
(adhesion,
flattening,
ploughing)
identified
scanning
electron
microscope
(SEM).
influence
parameters
process
on
value
COF
artificial
neural
networks.
lowest
recorded
when
lubricating
5W40
C3
oil,
which
is
characterised
most
viscous
all
tested
lubricants.
dry
conditions,
decreasing
trend
increasing
contact
pressure
observed.
whole
range
applied
(4.38-11.69
MPa),
during
lubrication
between
0.14
0.17
speed
10
mm/min
0.13
0.16
mm/min.
0.23
0.28
0.22
0.26
SEM
micrographs
revealed
mechanism
6082-T6
alloys
cold-work
tool
steel
flattens
asperities.
sensitivity
analysis
input
viscosity
has
greatest
impact
COF,
followed
by
speed.
Materials,
Год журнала:
2022,
Номер
15(15), С. 5137 - 5137
Опубликована: Июль 24, 2022
There
are
many
factors
influencing
the
accuracy
of
surface
topography
measurement
results:
one
them
is
vibrations
caused
by
high-frequency
noise
occurrence.
It
extremely
difficult
to
extract
results
defined
as
from
real
measured
data,
especially
application
various
methods
requiring
skilled
users
and,
additionally,
improper
use
software
may
cause
errors
in
data
processing.
Accordingly,
thresholding
for
minimization
raw
processing
were
proposed
and
compared
with
commonly
used
(available
commercial
software)
techniques.
Applied
procedures
parameters
(from
ISO
25178
standard)
calculation
after
removal
reduction,
respectively,
(S-filter).
Methods
applied
analysis
laser-textured
surfaces
a
comparison
regular
methods,
previously
measuring
equipment.
was
found
that
algorithms
can
be
suitable
when
selected
provided.
Moreover,
both
process
reduced
support
procedures.
From
applied,
(regular
Gaussian
regression
filter,
robust
spline
filter
fast
Fourier
transform
filter),
most
encouraging
obtained
reduction
details
supported
approach.
Processes,
Год журнала:
2023,
Номер
11(2), С. 641 - 641
Опубликована: Фев. 20, 2023
AF1410
is
a
low
carbon
high
alloy
ultra-high
strength
steel.
It
not
only
has
and
toughness,
but
also
stress
corrosion
resistance.
However,
due
to
the
characteristics
of
hard
quality
poor
thermal
conductivity,
difficult
material
process.
In
process
milling,
geometric
factors
parameters,
flexible
deformation
milling
cutter
flutter
system
all
affect
surface
roughness,
which
makes
it
predict
roughness
parts.
order
solve
this
problem,
prediction
model
for
topography
ultrahigh
steel
was
studied.
To
paper
studies
formation
topography,
considers
dynamic
displacement
system,
proposes
modeling
method
based
on
forms
model.
On
basis,
simulated
analyzed,
accuracy
verified
by
experiments.
The
study
realizes
parts
reveals
mechanism
from
physical
perspectives.
Coatings,
Год журнала:
2022,
Номер
12(6), С. 726 - 726
Опубликована: Май 25, 2022
Various
methods,
based
on
both
surface
frequency
and
direction,
can
be
alternatively
proposed
to
reduce
the
influence
of
high-frequency
measurement
data
analysis
errors.
types
details
were
studied,
e.g.,
cylinder
liners
after
plateau-honing
process,
plateau-honed
with
additionally
burnished
oil
pockets
(dimples),
turned,
ground,
milled
or
laser-textured.
They
measured
stylus
non-contact
(optic)
techniques.
It
was
suggested
support
various
frequency-based
Frequency
Spectrum,
Power
Spectral
Densities
Autocorrelation
Function,
direction
techniques
provide
reduction
errors
in
detection
extraction
Results
especially
valuable
for
regular
studies
when
are
difficult
identified.
Materials,
Год журнала:
2023,
Номер
16(1), С. 425 - 425
Опубликована: Янв. 2, 2023
20Cr2Ni4A
alloy
is
widely
used
in
the
manufacturing
of
heavy-duty
gears,
although
limited
information
about
its
machinability
during
form-grinding
process
has
been
reported.
In
this
work,
trials
on
transmission
gears
under
various
parameters
were
conducted.
Surface
morphology
gear
tooth,
surface
roughness
distribution
and
microstructure
evolution
machined
layer
comprehensively
studied,
influence
grinding
performance
was
investigated.
The
formation
mechanisms
surface/subsurface
defects
process,
including
plastic
flow,
deep
grooves,
successive
crushing
zone,
adhesive
chips
cavities,
analyzed.
Results
showed
that
change
contact
conditions
between
wheel
tooth
led
to
decrease
from
tip
root.
Mechanical
force
heat
promoted
deformation
refinement
within
layer.
With
increase
cutting
depth
feed
speed,
ratio
increased,
which
also
consistent
with
variation
trend
temperature.
