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The Forschungszentrum Karlsruhe (www.fzk.de) is one of the biggest science and engineering research institutions in Europe. In addition to standard tests the Forschungzentrum Karlsruhe is investigating the concept of characterisation of irradiated material by instrumented indentation. For this reason they purchased a Zwick ZHU0.2/Z2.5 modular testing system to assist them in their quest to investigate the material's mechanical properties after irradiation damage mechanisms. Zwick was the only manufacturer who could provide a solution for this unique application.
The ZHU0.2/Z2.5 has a load range of 2-200N and a displacement measuring resolution of 0,02um. The system is equipped with a fully automated X/Y table and Rockwell and Vickers indenters. The indentaion can be viewed through a microscope fitted with a CCD camera.
The Zwick ZHU0.2/Z2.5 is installed in a gas tight hot cell with 200mm lead/ 500mm lead glass shielding. It carries out multistage indentation tests (load/unload) with different holding times. Neutral networks then evaluate the correlation between these test data and the parameters of a viscoplastic material model. The unique operation of the indentation tester allows it to carry out precision loading cycles up to varous foces and displacements with predetermined holding times during each cycle. testXpert(R) software is used to control the machine and obtain the sychronised force and indentation data.
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