Shear Performance of Vertical Joints in Wind Turbine Concrete Towers with Different Interface Processes
Yang Zhou,
No information about this author
Ertong Hao,
No information about this author
Yunmeng Ran
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et al.
Buildings,
Journal Year:
2025,
Volume and Issue:
15(2), P. 250 - 250
Published: Jan. 16, 2025
As
a
weak
part
of
the
concrete
tower
in
wind
turbines,
insufficient
shear
capacity
vertical
joints
can
cause
local
failure
tower,
reduce
overall
bearing
and
stability
lead
to
safety
issues.
At
present,
splicing
mainly
uses
epoxy
resin
filling
arc
bolt
connections.
However,
sometimes
near
is
damaged
due
compression
after
applying
pretension
bolts,
which
will
affect
entire
structure.
If
other
interface
processes
are
used
for
joint
splicing,
performance
be
directly
affected.
Therefore,
order
study
influence
different
on
tubes,
four
specimens
were
designed
pull-out
test
under
load
mode
analyzed
studied.
The
results
showed
that
with
an
increase
thickness
application
chiseling
treatment,
as
well
injecting
into
channels,
could
enhanced.
Finally,
based
existing
research
standardized
design
methods,
turbine
towers
was
predicted,
methods
not
yet
fully
applicable
processes.
Further
needed
supplement
improve
them.
Language: Английский
Effects of interfacial strength and failure modes on the tension-tension fatigue performance of high-toughness CF/EP composites
Mingchen Sun,
No information about this author
Xiangyu Zhong,
No information about this author
Lianwang Zhang
No information about this author
et al.
Composites Communications,
Journal Year:
2025,
Volume and Issue:
unknown, P. 102278 - 102278
Published: Jan. 1, 2025
Language: Английский
Examining the influence of fiber orientation and cross-sectional geometry on the absorption capability of epoxy/carbon composite absorbents
Yanxue Chen,
No information about this author
Yanxia Zhong,
No information about this author
Haixia Yin
No information about this author
et al.
Journal of Engineering and Applied Science,
Journal Year:
2025,
Volume and Issue:
72(1)
Published: Feb. 10, 2025
Abstract
This
study
investigates
the
collapse
behavior
and
energy
absorption
capabilities
of
epoxy/carbon
composite
absorbers
using
finite
element
analysis
(FEA)
in
ABAQUS
software.
The
focuses
on
different
geometrical
cross-sections
(circular,
square,
octagonal)
various
fiber
orientations
(0°,
30°,
45°,
60°,
90°).
simulation
results
are
validated
against
experimental
data
from
previous
studies
to
ensure
accuracy.
findings
reveal
that
nonzero
induce
twisting,
altering
stress
distribution
reducing
geometric
stability.
highest
capacity
was
registered
for
circular
sections
among
investigated
geometries;
maximum
force
octagonal
with
a
orientation
60°
increased
by
35%
49%
respect
cylindrical
square
sections,
respectively.
Also,
case
an
section,
average
absorbed
occurs
at
51.3°.
cross-section,
especially
46.4°,
demonstrates
better
peak
load
than
rest
geometries.
In
this
study,
critical
effect
underlined;
instance,
0°
behaves
like
soft
material,
while
90°
brittle
one,
providing
modes
collapse.
indicate
how
materials
could
be
optimized
applications.
Language: Английский
Research on the damage and energy absorption characteristics of spiral gradient composite structures subjected to impact loading
Engineering Fracture Mechanics,
Journal Year:
2025,
Volume and Issue:
unknown, P. 111077 - 111077
Published: March 1, 2025
Language: Английский
Constructing ZnO seed layer on the carbon fibers for enhancing the erosion resistance of carbon fiber/epoxy resin composite coating
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2025,
Volume and Issue:
unknown, P. 136907 - 136907
Published: April 1, 2025
Language: Английский
Experimental Analysis of Low-Energy Impact Damage in Composite Material Airfoils
Fibers,
Journal Year:
2025,
Volume and Issue:
13(5), P. 67 - 67
Published: May 19, 2025
The
use
of
composite
materials
in
aerospace
structures
has
led
to
significant
weight
reductions
and
improved
performance.
However,
their
behavior
under
low-energy
impact
remains
a
critical
concern
due
the
potential
initiation
barely
visible
damage.
This
study
investigates
crack
mechanisms
airfoil
profiles
subjected
impact,
simulating
real-world
scenarios
such
as
hail
or
bird
strikes.
Two
types
were
fabricated
using
bidirectional
carbon
fiber
reinforced
polymer
(CFRP)
with
epoxy
resin
tested
ASTM
D7136
conditions.
Tensile
tests
following
D3039
conducted
assess
post-impact
mechanical
behavior.
damage
patterns
analyzed
high-resolution
microscopy
non-destructive
inspection
techniques.
Results
revealed
that
severity
propagation
depend
on
energy
levels
geometry,
SC(2)-0714
exhibiting
better
resistance
than
GOE777-IL.
Microscopic
analysis
confirmed
delamination
initiated
at
45°
orientations,
expanding
along
interlaminar
regions,
while
curvature
influenced
dissipation.
Language: Английский
Raman spectroscopy study of the role of dispersion and interfaces in the improvement of the mechanical properties of epoxy-TiO2 composites
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 1, 2024
Language: Английский
Interlayer damage analysis of resin based fibre composites under hygrothermal and load coupling environment
Wei Xuan Tan,
No information about this author
Guangbin Wang,
No information about this author
Jingxin Na
No information about this author
et al.
Composite Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 27
Published: April 14, 2025
Language: Английский
Double-Notched In-Plane Compressive Strength of Unidirectional Carbon Fiber-Reinforced Graphene/Epoxy Composites: Effects of Functional Groups, Filler Concentration, and Fiber Orientation
Journal of Materials Engineering and Performance,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 16, 2025
Language: Английский
Enhancing fiber/matrix interface adhesion in polymer composites: Mechanical characterization methods and progress in interface modification
Journal of Composite Materials,
Journal Year:
2024,
Volume and Issue:
58(29), P. 3077 - 3110
Published: Sept. 23, 2024
The
interface
between
the
fiber
and
polymer
matrix
is
a
crucial
region
that
plays
major
role
in
mechanical
performance
of
reinforced
composites
(FRPCs)
materials.
properties
this
zone
are
recognized
to
have
significant
influence
on
fracture
failure
FRPCs.
As
result,
strong
adhesion
at
required
for
effective
stress
transfer
load
distribution
within
composite
material.
In
light
this,
aim
work
provide
an
up-to-date
review
test
methods
assessing
fiber/matrix
FRPCs
under
static
dynamic
loadings,
along
with
advancements
modification
techniques.
At
outset,
we
give
overview
different
treatments
used
thus
far,
alongside
testing
methods,
order
optimize
compatibility,
improve
interfacial
bonding
scrutinize
their
impact
properties.
Particular
attention
then
focused
description
main
characterization
techniques
assess
final
outlook,
highlight
key
findings
discuss
potential
directions
interface.
Language: Английский