Industrial Lubrication and Tribology,
Journal Year:
2023,
Volume and Issue:
76(1), P. 11 - 21
Published: Nov. 29, 2023
Purpose
This
paper
aims
to
prevent
gasket
sealing
failure
in
engineering,
accurately
predict
life,
extend
system
life
and
improve
reliability.
The
accelerated
test
method
of
flexible
graphite
composite–reinforced
gaskets
is
established,
the
distribution
law
revealed,
prediction
with
different
allowable
leakage
rates
proposed,
which
can
provide
a
reference
for
other
types
gaskets.
Design/methodology/approach
In
this
study,
were
tested
long-term
high-temperature
performance
on
multi-sample
rig.
data
also
analyzed
using
least
squares
K-S
hypothesis
calibration
method.
A
time-dependent
model
an
developed.
Constant
stress-accelerated
tests
conducted
On
basis,
at
was
proposed.
Findings
revealed.
results
show
that
obeys
Weibull
distribution.
time-correlated
established.
And
parameters,
parameters
estimates
obtained
through
tests.
under
be
used
as
Practical
implications
research
better
guidance
use
replacement
project,
very
meaningful
predicting
condition
bolted
flange
connection
taking
corresponding
control
measures
reduce
energy
waste
pollution
ensure
safe
operation
industrial
equipment.
Originality/value
multi-specimen
gasket-accelerated
device
has
been
developed,
design
have
reached
international
advanced
level.
Peer
review
peer
history
article
available
at:
https://publons.com/publon/10.1108/ILT-08-2023-0254/
Mechanics Based Design of Structures and Machines,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 41
Published: Dec. 22, 2024
Bolted
connections
are
widely
used
in
the
assembly
of
aeroengine
casings,
and
uniformity
residual
pretension
bolts
is
considered
one
important
criteria
for
evaluating
structural
performance
bolted
connections.
This
paper
based
on
theory
elastic
interaction
between
bolts,
constructs
theoretical
models
bolt
group
pre-tightening
force
single
double
during
process.
model
can
obtain
preload
distribution
each
with
known
initial
force,
re
solve
force.
During
analysis
process,
influence
different
sequences
steps
was
analyzed.
It
found
that
using
specific
increasing
effectively
reduce
impact
groups.
At
same
time,
difference
correction
method
instead
reverse
solution
to
model,
making
more
evenly
distributed.
In
addition,
this
also
conducted
step
multi-step
experiments
compared
them
fully
proving
correctness
model.
The
constructing
connection
system
be
applied
other
aerospace
systems,
guiding
process
design,
optimization,
improving
structure
actual
engine
casings
engineering.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 30, 2024
During
the
filling
process
of
LNG
tank
trucks,
due
to
long-term
operation
equipment
in
low
temperature
and
high-pressure
conditions,
sealing
parts
are
prone
failure,
leading
leaks.
The
reasons
for
leakage
were
analyzed,
diffusion
after
different
equivalent
hole
diameters
wind
speeds
numerically
analyzed.
A
gas
leak
monitoring
system
suitable
stations
was
established
based
on
TDLAS
technology.
analysis
results
show
that
when
diameter
is
greater
than
4
mm,
height
natural
will
exceed
5
m
within
2
s
without
wind;
concentration
above
point
inversely
proportional
height,
decrease
at
a
between
50%
60%
compared
with
0.5
m;
bend
shape
downwind,
degree
bending
decreases
as
increases;
optimal
laser
incidence
angle
sensor
30°
50°,
theoretical
effective
area
width
installation
4.46
range.
ce/papers,
Journal Year:
2023,
Volume and Issue:
6(3-4), P. 2550 - 2557
Published: Sept. 1, 2023
Abstract
Steel
structures
are
often
subjected
to
cyclic
loads,
and
sometimes
monotonic
overloads,
during
the
technical
lifetime,
which
causes
their
performance
degradation.
Incidentally,
they
undergo
progressive
collapse,
especially
due
local
failure
of
connections
or
joints.
To
ensure
overall
integrity
steel
make
sure
efficient
transfer
load
between
different
components,
it
is
necessary
evaluate
ultimate
capacity
fatigue
resistance
connections.
Advances
in
material
modelling
well‐controlled
experiments
at
various
scales
recent
years
have
increased
confidence
finite
element
method
as
an
effective
way
predict
life.
On
examples
two
common
connections:
bolted
connection
welded
connection,
progress
will
be
presented
ductile
fracture
crack
initiation
propagation
simulation.
Aerospace,
Journal Year:
2023,
Volume and Issue:
10(9), P. 738 - 738
Published: Aug. 22, 2023
Aircraft
reciprocating
engines
have
been
in
operation
over
the
past
100
years,
which
is
a
testament
to
their
high
levels
of
reliability
and
stability.
Compared
turbine
engines,
are
at
disadvantage
when
it
comes
high-speed
flight.
Nevertheless,
they
widely
used
mainly
for
small
aircraft
thanks
specific
power
or
power-to-weight
ratio.
Considering
that
propulsion
systems
account
approximately
40%
price,
lightness
performance
key
attributes
achieve
longer
endurance.
With
advantages
offered
by
diesel
such
as
fuel
economy,
less
maintenance,
long
lifespan,
many
attempts
made
mount
automotive
on
urban
air
mobility
light
aircraft.
Recognizing
advanced
technology,
where
ratio
engine
1
PS/kg,
we
analyzed
case
an
automobile
was
converted
use
We
focused
Mercedes-Benz
OM640
Austro
AE300
disassembled
two
comparative
analysis.
then
classified
components
modified
(1)
defining
major
parts
fixed
alteration
ones;
(2)
identifying
airworthiness-related
parts;
(3)
categorizing
conversion
purposes
into
classes
A,
B,
C.
Components
under
class
A
were
further
categorized
subgroups
accordance
with
airworthiness
certification
specifications
outlined
European
Union
Aviation
Safety
Agency.
This
helped
determine
corresponding
standards
each
subgroup.
An
inspection
oil
supply
system
revealed
need
apply
safety
wiring
some
prevent
possible
leakages,
can
be
caused
pressure
difference
increasing
altitude.
Moreover,
given
sensor
manufacturers
required
present
guidelines
redundancy
through
numerous
designs
tests
secure
single-fault
tolerance,
established
criteria
selecting
applying
sensors
separating
must
redundant
from
ones
not
subject
redundancy.
Industrial Lubrication and Tribology,
Journal Year:
2023,
Volume and Issue:
76(1), P. 11 - 21
Published: Nov. 29, 2023
Purpose
This
paper
aims
to
prevent
gasket
sealing
failure
in
engineering,
accurately
predict
life,
extend
system
life
and
improve
reliability.
The
accelerated
test
method
of
flexible
graphite
composite–reinforced
gaskets
is
established,
the
distribution
law
revealed,
prediction
with
different
allowable
leakage
rates
proposed,
which
can
provide
a
reference
for
other
types
gaskets.
Design/methodology/approach
In
this
study,
were
tested
long-term
high-temperature
performance
on
multi-sample
rig.
data
also
analyzed
using
least
squares
K-S
hypothesis
calibration
method.
A
time-dependent
model
an
developed.
Constant
stress-accelerated
tests
conducted
On
basis,
at
was
proposed.
Findings
revealed.
results
show
that
obeys
Weibull
distribution.
time-correlated
established.
And
parameters,
parameters
estimates
obtained
through
tests.
under
be
used
as
Practical
implications
research
better
guidance
use
replacement
project,
very
meaningful
predicting
condition
bolted
flange
connection
taking
corresponding
control
measures
reduce
energy
waste
pollution
ensure
safe
operation
industrial
equipment.
Originality/value
multi-specimen
gasket-accelerated
device
has
been
developed,
design
have
reached
international
advanced
level.
Peer
review
peer
history
article
available
at:
https://publons.com/publon/10.1108/ILT-08-2023-0254/
