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Introduction
MPM's Automatic Charpy Specimen Transfer System on a
Floor Model Impact Machine |
Charpy testing of radioactive materials often requires
special shielding and/or the use of hot cells. In such cases, specimen
alignment using remote manipulators is a very difficult, time consuming, and
expensive operation. MPM has developed an automatic specimen transfer system
to address this problem. The system can be used on table top and floor model
pendulum machines as well as on drop tower machines manufactured by MPM and by
other organizations. The specimen transfer system is intended for use with
the MPM In-Situ Heating & Cooling system. Please refer to our
In-Situ Heating &
Cooling system web page for more information.
System Operation
The specimen transfer system transfers the test specimens
one at a time to the test machine supports from a 15 specimen magazine. The
notch is centered between the anvils within 0.002 inches routinely using this
system. The magazine has been designed for manipulator handling and can be
easily transferred to a loading table. After loading, the magazine is
pneumatically aligned and clamped in place.
Specimen
Heating/Cooling
 |
| MPM's Automatic Charpy
Specimen Transfer System on a Table Top Chops Machine |
The specimen transfer system can be interfaced with the
In-Situ Heating & Cooling system. A light weight thermocouple is moved into
position by the automatic specimen transfer system to measure the temperature
of the specimen prior to testing. The system can be interlocked with the
hammer release to ensure that the swing path is clear before releasing the
pendulum.
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