Quality and Reliability Engineering International,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 16, 2025
ABSTRACT
This
article
focuses
on
progressive‐stress
accelerated
life
testing
(ALT)
under
a
unified
progressive
hybrid
censoring
scheme.
The
study
assumes
that
the
lifetimes
of
test
units
follow
Lomax
distribution,
with
scale
parameter
modeled
using
cumulative
exposure
model
and
an
inverse
power
law.
parameters
are
estimated
both
classical
Bayesian
methods.
approach
uses
maximum
likelihood
estimation
for
point
estimates
asymptotic
confidence
intervals.
In
contrast,
employs
informative
noninformative
priors,
Metropolis–Hastings
algorithm
handling
complex
posterior
computations.
Extensive
simulations
evaluate
performance
various
ALT,
including
simple
multiple
ramp‐stress
tests.
We
have
applied
above
methodology
to
real‐life
data
demonstrated
its
applicability.
Furthermore,
we
introduce
machine
learning
techniques
analyze
reliability
model.
employed
three
methods,
such
as
random
forest
regression,
decision
tree
multilayer
perceptron
estimate
reliability.
A
comparative
analysis
all
methods
metrics
has
been
discussed.
compared
statistical
estimation.
International Journal of Structural Integrity,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Purpose
Damage
to
the
pipe
structure
and
increased
bolt
stress
in
operating
tunnels
will
significantly
affect
long-term
stability
of
shield
tunnels.
However,
due
large
number
segments
complex
installation
methods,
it
is
difficult
directly
obtain
conditions
bolts.
Convergence
deformation,
as
an
important
indicator
for
health
assessment
tunnels,
easy
collect
can
reflect
structural
state
tunnel
Design/methodology/approach
Taking
typical
sections
Hangzhou
Metro
Line
1
3
example,
current
damage
simulated
by
monitoring
convergence
deformation.
First,
based
on
disease
data,
relationship
between
deformation
segment
leakage,
misalignment
well
longitudinal
joint
opening
two
analyzed
statistically.
The
bolts,
steel
bars
under
different
deformations
Midas.
Then
a
reinforcement
measure
circumferential
internal
tension
rings
proposed.
Findings
It
found
that
when
exceeds
85
mm,
although
overall
force
has
not
reached
material
limit,
there
are
certain
safety
risks
structure.
After
comparison,
relatively
significant
effect
controlling
lateral
segments.
Originality/value
results
have
guiding
significance
evaluation
diseases,
early
warning
control
diseases
at
deformations.
International Journal of Structural Integrity,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Purpose
Prismatic
specimens
were
fabricated,
consisting
of
two
ceramic
tiles
bonded
by
an
intermediate
adhesive
mortar
layer.
To
simulate
pre-existing
defects,
acetate
film
was
strategically
inserted
into
one
the
mortar-ceramic
interfaces,
creating
controlled
cracks
varying
sizes.
The
subjected
to
low-amplitude
cyclic
loading,
inducing
simultaneous
tensile
and
shear
stresses
within
system.
vibrational
responses
samples
recorded,
their
frequency-domain
amplitudes
analyzed.
Design/methodology/approach
Ceramic
tile
detachment
remains
a
significant
issue
in
contemporary
construction,
despite
advancements
technology
updates
regulatory
standards.
majority
these
failures
occur
at
interface
due
combined
effects
stresses.
While
this
phenomenon
is
well-documented,
experimental
studies
assessing
adhesion
integrity
façade
cladding
systems
are
limited.
This
study
aims
evaluate
performance
mortars
using
non-destructive
analysis
technique.
Findings
results
enabled
characterization
dynamic
behavior
specimens,
identification
frequency
regions
corresponding
individual
components,
formulation
diagnostic
criteria
for
damage
detection.
Analysis
resonance
spectra
also
made
it
possible
identify
peak
that
can
be
related
mortar-substrate
interface.
Additionally,
elastic
dissipated
energy
metrics
calculated
quantify
system’s
mechanical
behavior.
further
investigated
impact
crack
size,
curing
time
type
on
overall
structural
integrity.
Originality/value
work
Resonance
measurements
have
been
used
research
analyze
propagation
paths
metallic
from
aircraft
engines.
However,
widespread
use
techniques
based
frequencies
assessment,
application
field
coating
seems
virtually
unexplored.
Therefore,
attempts
address
gap
investigating
bond
joints,
focusing
material’s
associated
parameters.
Energies,
Journal Year:
2025,
Volume and Issue:
18(5), P. 1108 - 1108
Published: Feb. 24, 2025
Offshore
wind
resources
in
China
and
Europe
are
systematically
compared,
focusing
on
speed
characteristics
the
selection
of
optimal
probability
distribution
models.
Using
20
years
data
at
10
m
100
above
sea
level,
seven
unimodal
models
were
applied.
The
results
point
out
that
China’s
offshore
exhibit
high
spatial
temporal
variability,
influenced
by
monsoons
typhoons,
while
European
seas
characterized
stable
patterns.
Among
tested,
Weibull
is
most
accurate
one
for
fitting,
Generalized
Extreme
Value
Gamma
perform
better
regions
with
higher
skewness
extreme
events.
This
study
highlights
importance
characteristics,
such
as
kurtosis,
selecting
model.
These
findings
provide
valuable
guidance
improvement
energy
assessments
appropriate
Future
research
should
explore
advanced
techniques,
machine
learning
hybrid
models,
to
capture
complex
patterns
enhance
model
accuracy.
International Journal of Structural Integrity,
Journal Year:
2024,
Volume and Issue:
15(5), P. 873 - 901
Published: July 23, 2024
Purpose
This
paper
aims
to
optimize
cable-stayed
force
in
asymmetric
one-tower
bridge
formation
using
an
improved
particle
swarm
algorithm.
It
compares
results
with
the
traditional
unconstrained
minimum
bending
energy
method.
Design/methodology/approach
proposes
algorithm
formation.
formulates
a
quadratic
programming
mathematical
model
considering
sum
of
energies
main
girder
and
tower
as
objective
function.
Constraints
include
displacements,
stresses,
force,
uniformity.
The
is
applied
asymmetrical
single-tower
bridge,
combining
it
finite
element
Findings
study’s
findings
reveal
significant
improvements
over
Results
show
that
structural
displacement
internal
are
within
constraints,
maximum
moment
decreases,
resulting
smoother
linear
shape
more
even
distribution.
Additionally,
top
offset
change
at
tower-beam
junction
reduced.
Moreover,
diagonal
cable
increase
uniformly
length
growth.
Originality/value
offers
simplicity,
effectiveness,
practicality
optimizing
bridge-forming
cable-staying
force.
eliminates
need
for
arbitrary
manual
adjustments
seen
methods
effectively
addresses
optimization
challenge
bridges.
AIMS Mathematics,
Journal Year:
2025,
Volume and Issue:
10(1), P. 438 - 459
Published: Jan. 1, 2025
<p>Integrating
fuzzy
concepts
into
statistical
estimation
offers
considerable
advantages
by
enhancing
both
the
accuracy
and
reliability
of
parameter
estimations,
irrespective
sample
size
technique
used.
This
study
specifically
examined
improvement
when
dealing
with
data,
a
focus
on
gamma
distribution.
We
explored
evaluated
variety
techniques
for
determining
scale
$
\eta
shape
\rho
distribution,
employing
maximum
likelihood
(ML)
Bayesian
methods.
In
case
ML
estimates,
expectation-maximization
(EM)
algorithm
Newton-Raphson
(NR)
method
were
applied,
confidence
intervals
constructed
using
Fisher
information
matrix.
Additionally,
highest
posterior
density
(HPD)
derived
through
Gibbs
sampling.
For
Tierney
Kadane
(TK)
approximation
sampling
used
to
enhance
process.
A
thorough
performance
comparison
was
undertaken
simulated
dataset
lifetimes
rechargeable
batteries
assess
effectiveness
these
The
methods
comparing
estimated
parameters
their
true
values
mean
squared
error
(MSE)
as
metric.
Our
findings
demonstrate
that
approach,
particularly
combined
TK
method,
consistently
produces
more
accurate
reliable
estimates
compared
traditional
These
results
underscore
potential
in
addressing
data
precision
analyses.</p>
Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 26, 2025
The
high-dimensional
model
decomposition
method
is
an
effective
approach
for
solving
the
reliability
of
engineering
structures
or
composite
materials
with
a
large
number
uncertain
parameters.
multiplicative
dimensionality
reduction
technique
that
decomposes
function
into
combination
low-dimensional
functions
and
approximates
overall
response
by
responses
these
functions.
This
paper
begins
discussing
extrema
based
on
method.
Then,
combining
it
Taylor
series
expansion,
approximating
extremum
was
proposed.
Furthermore,
method,
first-order
functional
relationship
between
upper
lower
bounds
failure
probability
interval
variables
derived.
Finally,
using
algorithm
proposed
in
this
paper,
can
be
calculated
to
solve
under
random-interval
hybrid
uncertainty.
presents
two
numerical
example
demonstrate
efficiency
accuracy
