最終更新日：2022/12/22
例文
Charpy
impact
testing
showed
that
the
normalized
steel
in
the
tank
shell
of
the
punctured
chlorine
car
had
a
fracture
toughness
that
was
significantly
greater
than
the
fracture
toughness
of
the
non-normalized
steels
of
the
catastrophically
ruptured
tank
cars
involved
in
the
derailment
of
a
Canadian
Pacific
Railway
freight
train
in
Minot,
North
Dakota,
in
January
2002.
The
steel
in
the
Minot
tank
cars
exhibited
relatively
low
fracture
toughness,
and
cracks
propagated
rapidly
around
the
circumference
of
each
tank.
The
higher
fracture
toughness
in
the
Graniteville
tank
car
contributed
to
the
relatively
quick
arrest
of
the
crack
even
though
there
was
brittle
fracture
in
its
outer
portions.
復習用の問題
Charpy impact testing showed that the normalized steel in the tank shell of the punctured chlorine car had a fracture toughness that was significantly greater than the fracture toughness of the non-normalized steels of the catastrophically ruptured tank cars involved in the derailment of a Canadian Pacific Railway freight train in Minot, North Dakota, in January 2002. The steel in the Minot tank cars exhibited relatively low fracture toughness, and cracks propagated rapidly around the circumference of each tank. The higher fracture toughness in the Graniteville tank car contributed to the relatively quick arrest of the crack even though there was brittle fracture in its outer portions.
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