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this O
porosity B-Task
structure I-Task
changes I-Task
after O
Hot B-Process
Isostatic I-Process
Pressing I-Process
( O
HIP B-Process
) O
treatment O
of O
the O
same O
sample O
. O
Aeroengine B-Task
turbine I-Task
disks I-Task
often O
consist O
of O
paramagnetic B-Material
, O
that O
means O
non-ferromagnetic B-Material
Nickel I-Material
based I-Material
alloys I-Material
. O
Sometimes O
, O
parasitic B-Material
small I-Material
ferromagnetic I-Material
particles I-Material
can O
be O
included O
in O
these O
disks O
that O
may O
decrease B-Task
the I-Task
mechanical I-Task
stability I-Task
. O
For O
this O
reason O
, O
in O
case O
of O
a O
suspicion O
disks O
are O
to O
be O
analysed O
with O
respect O
to O
ferromagnetic B-Process
inclusions I-Process
. O
These O
inclusions O
generate O
a O
magnetic B-Task
density I-Task
which O
can O
be O
measured O
by O
a O
flux B-Material
gate I-Material
magnetometer I-Material
using O
the O
magnetic B-Process
remanence I-Process
method I-Process
[ O
1 O
] O
. O
The O
detection B-Process
principle I-Process
of I-Process