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Robotic Test System Automates Charpy and Izod Impact Testing

Zwick's 'roboTest H' robotic testing system delivers automated Charpy or Izod impact tests on room-temperature and cooled plastics specimens. The main advantages of this development are safe, reliable transport of the specimen to the support together with automatic specimen alignment and hammer release.

Zwick Robotic testing system 'roboTest H'

In this way external operator influences such as body heat and moisture or varying specimen alignment are eliminated, giving a significant improvement in reproducibility. The full system comprises the 'roboTest H' robotic testing system plus a tempering magazine for up to 20 specimens (stacking height 80 mm) and a 25 or 50-joule pendulum impact tester as required.

In preparation for the test the specimens are first inserted into a magazine slide-carrier and positioned in the robotic testing system. For low-temperature tests the magazine is cooled in advance to a defined temperature in an optionally available tempering box. The specimen is then transferred by a pusher arm to the gripper, which transports it to the test area in under five seconds. Here it is centered and positioned on the anvil for the impact test. The operator is supported by the proven testXpert testing software, with optional database-export via simple ASCII, ODBC or TCP/IP.

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