Materials,
Journal Year:
2024,
Volume and Issue:
17(15), P. 3863 - 3863
Published: Aug. 4, 2024
Collision
welding
is
a
promising
approach
for
joining
conventional
materials
in
identical
or
dissimilar
combinations
without
heat-related
strength
loss,
thereby
opening
up
new
lightweight
potential.
Widespread
application
of
this
technology
still
limited
by
an
insufficient
state
knowledge
with
respect
to
the
underlying
mechanisms.
This
paper
applies
collision
material
combination
DC04
steel
and
EN
AW
6016
aluminium
alloy.
Firstly,
process
window
determined
varying
speed
angle,
two
main
influencing
variables
welding,
using
special
model
test
rig.
The
area
highest
shear
tensile
welded
joint
then
tests
SEM
images
weld
zone.
investigations
reveal
four
distinct
metallographic
structures
zones,
fractions
which
are
correlated
angle
strength.
Environmental Science & Technology Letters,
Journal Year:
2024,
Volume and Issue:
11(4), P. 315 - 322
Published: March 25, 2024
Particulate
matter
(PM)
emitted
from
road
traffic
causes
adverse
health
effects
upon
inhalation
and
respiratory
deposition.
Non-exhaust
emissions
will
eventually
become
the
dominant
source
of
PM
transition
to
electric
vehicles;
however,
non-tailpipe
is
currently
unregulated
as
its
impacts
are
still
unclear.
In
this
study,
we
generated
brake
wear
particles
(BWPs)
with
non-asbestos
organic,
ceramic,
semimetallic
pads
using
custom
dynamometers
measured
aqueous-phase
formation
reactive
oxygen
species
(ROS).
We
found
that
BWPs
do
not
contain
environmentally
persistent
free
radicals
(EPFRs),
all
types
generate
exclusively
·OH
in
water.
by
ceramic
brakes
during
heavier
braking
lead
higher
yields
compared
gentle
conditions,
suggesting
potential
ultrafine
BWPs.
Chemical
characterization
reveals
organic
elemental
carbon
correlated
positively
while
exhibiting
negative
correlations
abundant
metals
including
Fe
Mn.
suggest
thermal
decomposition
hydroperoxides
derived
phenolic
resin.
oxidative
quantified
dithiothreitol
(DTT)
assay
exhibited
a
positive
correlation
yield.
These
results
provide
critical
insights
into
toxicity
Annual Review of Public Health,
Journal Year:
2025,
Volume and Issue:
46(1), P. 315 - 330
Published: April 4, 2025
While
energy
transitions
have
always
taken
place,
shifts
historically
been
primarily
from
one
type
of
fossil
fuel
to
another
(e.g.,
coal
oil).
Yet
today
we
are
experiencing
away
toward
cleaner
and
sustainable
sources.
These
include
renewable
energy,
electric
vehicles,
pedestrian
pathways
more
walkable
cities,
efficiency
measures
in
the
built
environment,
increased
public
transportation.
This
restructuring
our
system
will
bring
impacts
on
health
improved
air
quality
lower
use
traditional
gasoline-powered
vehicles).
Furthermore,
transition
can
emissions
greenhouse
gases
(GHGs),
thereby
helping
slow
climate
change
minimize
its
anticipated
health.
work
is
needed
understand
full
implications
these
transitions,
including
for
environmental
justice
terms
who
share
benefits
potential
detriments
such
as
brake
wear
existing
literature
indicates
substantial
Moving
may
offer
a
rare
win-win
strategy
healthier
society
with
environment
GHGs.
