Corallo, L.Verleysen, P.2022-01-112022-01-112021-10-15http://hdl.handle.net/2003/40667http://dx.doi.org/10.17877/DE290R-22525Forming 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.enhigh-speed forminghigh-speed digital imagingdynamic biaxial testing620670A novel Hopkinson-based technique for high-speed biaxial testing of sheet metalsText