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dc.contributor.authorCorallo, L.-
dc.contributor.authorVerleysen, P.-
dc.description.abstractForming processes of sheet metals require knowledge of the material behaviour up to large levels of plastic deformation. To this purpose, biaxial bulge tests are often used. In present paper, a dynamic bulge test is presented. The testing principle relies on conventional split Hopkinson bar testing. Though, as opposed to existing setups, a different positioning of the bars leaves the sample fully accessible for optical measurements. The pressure imposed to a circular sample, together with the sample strain fields, allow to obtain reliable stress-strain data till significantly larger strains compared to tensile tests. The technique is illustrated by tests on an Al2024-T3 sheet. High speed camera imaging of the deforming sample combined with digital image processing is used to obtain full-field strain data. To quantitatively assess the added value of full-field strain measurements, stress-strain curves obtained with and without the strain data are compared.de
dc.relation.ispartof9th International Conference on High Speed Formingen
dc.subjecthigh-speed formingen
dc.subjecthigh-speed digital imagingen
dc.subjectdynamic biaxial testingen
dc.titleA novel Hopkinson-based technique for high-speed biaxial testing of sheet metalsen
dcterms.accessRightsopen access-
Appears in Collections:ICHSF 2021

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