Abstract
This paper describes a new type of impact test system using the Air-Slide that has less friction force generated between its moving part and the guide way. Dynamic force acting on a test piece is evaluated by measuring the velocity-time history of the moving part by an optical interferometer. Some cases on dynamic three-point bending tests for pure Aluminurn bars are carried out. The dynamic force is estimated by both the proposed experimental way and the finite element analyses. Although a slight deviation between the results related to the fixed condition can be observed, the results show the validity of the test system especially for observing the material behavior under spontaneous unloading.
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