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Impact
test
(DO
9.21-4330, IEC EN 61386)
This standard describes the impact
strength test on conduits at various temperatures.
The specimen is placed on a
steel plate, centred under an impact head
with a defined profile. The impact head
impacts the centre of the specimen surface.
In contrast to international specifications,
deformation behaviour (buckling) is
determining rather than fracture behaviour.
The impact test is considered to be
passed if no fracture or cracking can be
detected after the impact, as well as no
excessive permanent deformation of the
conduit in accordance with PMA specifications.
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