HIGH STRAIN RATE DUCTILITY IN UNIAXIAL TENSION : A REVIEW

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Abstract
The specific problems involved by high strain rate tension tests are first examined, as well as the various parameters describing ductility. Some experimental data relative to a high purity copper then illustrate the typical increase of dynamic ductility with strain rate. Finally, the main factors which are expected to determine ductility are reviewed. It is concluded that the dominant factor is the increase of stability with strain rate, which in turn may result from the occurrence of a linear flow rule and/or from inertia effects

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