Dynatup Impact Test Machines
Dynatup Impact Test Machines are used to determine the energy absorbed during impact events. A weighted crosshead is released and slides on guide bars. A steel flag on the carriage passes through a velocity detector block. The tup (instrumented load cell) attached to the crosshead contacts the specimen. The velocity and load data are recorded and used to calculate the impact energy. In this facility, Instron CeastVIEW VisualImpact data acquisition software and CEAST DAS 64K-SC DAQ systems are used.
The initial height and weight of the crosshead are adjustable.
3,500 lb. or 10,000 lb. strain gage tups are employed for load measurements.
The Model 8250 machine is configured to perform the Charpy V-notch impact test. The specimen is set on the support fixture. When the safety interlocks on the doors activate, the controls become functional. The crosshead is released by holding the ARM button, then pressing FIRE. After impact, the release mechanism automatically descends to retrieve the crosshead.
The Model 8200 machine is configured to perform impact tests on polymer and composite plates. A 100mm square plate is clamped in a pneumatic fixture. An interlock system requires that the clamp is activated and the doors are closed. The crosshead is released by pressing a button on the control pendant. After impact, a piston in the center of the clamping fixture may be used to remove the specimen from the tup. The crosshead is raised manually into the latching mechanism.