MECHANICAL PROPERTIES OF ALUMINIUM ALLOYS AT HIGH STRAIN RATE

Abstract

The split Hopkinson s pressure bar test is a part of a group of testing methods used to determine dynamic behavior of various materials in an interval of strain rate from 100 s-1 to 103 s-1. The article describes the practical application of the testing method for aluminum alloy EN AW 6082. This alloy is used for cold-extruded parts (components of car airbags). Since the strain rate of cold forming technologies reaches up to 1000 s-1, it is necessary to determine the material´s behavior at these strain rate values.