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Material Data Collection for Crash-Type Loading—ZwickRoell Modernizes Testing System at the RWTH Aachen University

The Institute for Plastics Processing (IKV) is Europe’s leading research and training institute in the field of plastics technology. Here, methods and solutions for a wide variety of applications are continuously developed. To optimize acquisition of material data for crash simulations, the hydraulically operated high-speed testing machine was electrically and mechanically overhauled, and a new testControl II control electronics system from ZwickRoell was installed. 

With the modernization, a time-triggered ARAMIS high-speed 3D camera system from GOM can now automate the correlation of strain value pairs with the machine data at high sampling rates. Implementation of this high-speed camera system supports visualization of processes leading to failure, since the processes in a crash event are not traceable for the human eye. With the system upgrade, material data for crash simulations can also be determined in the most modern way for materials under crash-type loading. In addition to optical strain acquisition, temperature ranges from -40 to +100 °C can be covered to characterize materials with regard to their temperature dependency. Besides a wide speed range from 0.01 to 12 m/s, high resolution in the force signal from 100 N to 20 kN is also available. This makes it possible to characterize not only frequently tested thermoplastics, but also films, technical plastic fabrics and mesh, foamed plastics and fiber-reinforced plastics, as a function of strain. In the next phase, the plan is to validate the new system for FRP materials under shear load.

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