|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
||Inflation of Stainless Steel 304L Microtubes under Axial Tension and Internal Pressure to Assess the Plastic Anisotropy
||Peter W Ripley, Yannis Korkolis
|On-Site Speaker (Planned)
We describe a custom testing machine for biaxial loading of microtubes under axial-force and internal-pressure. The machine is composed of a meso-scale tensile stage and a high-pressure pump, which operate in a fully coupled way. In addition, 3D digital image correlation is used to acquire the strain fields in real time. The system is capable of performing both proportional and non-proportional loading paths in the 1st quadrant of the axial-hoop nominal stress space. Fourteen proportional paths were performed on stainless steel SS-304L microtubes. The induced strain paths indicated that this material is anisotropic. Also plotted were contours of constant plastic work. It was discovered that the anisotropy of the material evolved at different rates for different loading paths, indicating deformation-induced anisotropy. These data were used to calibrate the Yld2000-2D and Yld2004-3D anisotropic yield criteria, which provided very close agreement with the experiments.
||Planned: A print-only volume