Ferroelectrics,
Год журнала:
2023,
Номер
613(1), С. 79 - 88
Опубликована: Июль 29, 2023
AbstractIn
this
article,
a
new
type
of
piezoelectric
energy
harvester
device
is
proposed,
which
has
good
output
performance
and
can
scavenge
large
amount
vibration
at
low
frequency.
By
setting
up
the
experimental
platform
testing,
results
show
that
external
resistance,
mass
cantilever
end,
excitation
acceleration
magnet
distance
have
an
impact
on
device.
When
end
beam
15
g
0.5
g,
power
5.2
mW,
good.Keywords:
Vibration
energycantilever
beampiezoelectricscavenge
Additional
informationFundingThis
work
was
supported
by
Shandong
Provincial
Natural
Science
Foundation
(ZR2022ME053),
National
China
(No.
51975303),
Key
Laboratory
Precision
Manufacturing
Non-traditional
Machining
The
Youth
Innovation
Team
Development
Program
Higher
Education
Institutions
(2022KJ234,
2022KJ235).
International Journal of Extreme Manufacturing,
Год журнала:
2023,
Номер
6(1), С. 012008 - 012008
Опубликована: Окт. 18, 2023
Abstract
Bio-inspired
macrostructure
array
(MAA,
size:
submillimeter
to
millimeter
scale)
materials
with
special
wettability
(MAAMs-SW)
have
attracted
significant
research
attention
due
their
outstanding
performance
in
many
applications,
including
oil
repellency,
liquid/droplet
manipulation,
anti-icing,
heat
transfer,
water
collection,
and
oil–water
separation.
In
this
review,
we
focus
on
recent
developments
the
theory,
design,
fabrication,
application
of
bio-inspired
MAAMs-SW.
We
first
review
history
basic
theory
discuss
representative
structures
corresponding
functions
some
biological
surfaces,
thus
setting
stage
for
design
fabrication
then
summarize
methods
wetting
MAAs
terms
three
categories:
additive
manufacturing,
subtractive
formative
as
well
diverse
functional
providing
insights
into
development
these
Finally,
challenges
directions
future
MAAMs-SW
are
briefly
addressed.
Worldwide
efforts,
progress,
breakthroughs
from
surface
engineering
applications
elaborated
herein
will
promote
practical
Machines,
Год журнала:
2024,
Номер
12(6), С. 398 - 398
Опубликована: Июнь 12, 2024
Scarfing
is
a
type
of
flame
treatment
used
to
improve
the
quality
metal
generated
during
steelmaking.
It
employs
principles
gas
cutting
remove
impurities
and
defects.
Due
high-temperature
conditions
need
for
uniform
treatment,
mechanical
scarfing
performed
via
frame
preferred
over
manual
hand
scarfing.
To
achieve
stable
scarfing,
properly
designed
essential.
Generally,
while
using
more
material
can
create
equipment,
it
also
increases
costs.
Therefore,
this
study
proposed
design
method
that
selects
an
acceleration
profile
minimize
shock
on
equipment
operation
multi-objective
genetic
algorithm
weight
maximize
rigidity.
Because
modifying
existing
based
optimization
results
would
incur
additional
costs
time,
pre-optimizing
through
simulation
before
fabrication
crucial.
Optimization
was
achieved
dimensional
equipment.
As
result,
each
part
deformation
decreased
by
average
17.05
kg
3.93%,
respectively.
International Journal of Extreme Manufacturing,
Год журнала:
2024,
Номер
6(6), С. 062007 - 062007
Опубликована: Авг. 13, 2024
Abstract
High-bandwidth
nano-positioning
stages
(NPSs)
have
boosted
the
advancement
of
modern
ultra-precise,
ultra-fast
measurement
and
manufacturing
technologies
owing
to
their
fast
dynamic
response,
high
stiffness
nanoscale
resolution.
However,
nonlinear
actuation,
lightly
damped
resonance
multi-axis
cross-coupling
effect
bring
significant
challenges
design,
modeling
control
high-bandwidth
NPSs.
Consequently,
numerous
advanced
works
been
reported
over
past
decades
address
these
challenges.
Here,
this
article
provides
a
comprehensive
review
NPSs,
which
covers
four
representative
aspects
including
mechanical
system
modeling,
parameters
optimization
motion
control.
Besides,
NPSs
applied
atomic
force
microscope
tool
servo
are
highlighted.
By
providing
an
extensive
overview
design
procedure
for
aims
offer
systemic
solution
achieving
operation
with
speed,
accuracy
Furthermore,
remaining
difficulties
along
future
developments
in
fields
concluded
discussed.
Heliyon,
Год журнала:
2023,
Номер
9(12), С. e22560 - e22560
Опубликована: Ноя. 22, 2023
Small-sized
ultra-precise
optical
devices
require
compact
compliant
ortho-planar
springs
(COPS)
aka.
flexure
springs,
for
precise,
frictionless
linear
motion
which
depends
highly
on
the
design.
A
self-developed
arm-hinge-linked
design,
named
"Panto-style"
spring
was
optimized
by
selecting
5
design
parameters
(thickness:
t,
hinge
width:
W,
arm
length
1
and
2:
L1
L2,
angle:
Ө)
constructing
sets
of
experiments
(DOEs).Signal-to-noise
ratio
(SNR)
response
surface
model
(RSM)
regression
were
obtained
in
terms
axial
deformation.
The
highest
from
main
effects
plot
thickness,
followed
width,
W.
angle
arm,
Ө,
considered
a
non-relevant
parameter.The
optimization
implemented
with
constraint
input
output.
Kinetostatic
performances
(axial/radial
deformations,
stress)
predicted,
validated,
compared
(RSM,
KNN,
FE
simulations,
experiments)
using
design.The
average
value
KNN
RSM
(KNN
+
RSM)
increased
accuracy
deformation
to
alone.
To
conclude,
parameter
has
successfully
predicted
output
results
confirmed
both
numerically
experimentally.
