|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||Unveiling 3D Deformations in Carbon Fiber Reinforced Polymer Composites by Coupled micro X-Ray Computed Topography and Volumetric Digital Image Correlation
||Brendan Croom, Wei-Ming Wang, Jingjing Li, Xiaodong Li
|On-Site Speaker (Planned)
A new method combining micro-X-ray computed tomography (µXCT) and volumetric digital image correlation (V-DIC) in conjunction with in-situ mechanical testing was used to probe three-dimensional (3D) deformation behavior in a friction stir blind revit (FSBR) joint of carbon fiber reinforced polymer (CFRP) composite. Intrinsic microstructural features such as fibers, pores and metal inclusions enabled accurate volumetric strain calculation of dense fiber reinforced polymer composites using V-DIC without the need for high-contrast additives. Deformation calculated with V-DIC was employed to determine variation of mechanical properties within the FSBR altered stir zone microstructure. Unique deformation mechanisms such as internal shear and microstructure-dependent local buckling were observed in-situ. Combined µXCT and V-DIC were shown to be effective to understand 3D microscale deformations in composites. The obtained 3D microscale strain maps revealed that the deformation behavior in joint-affected zones is fundamentally different from that of the bulk composite.
||Planned: A print-only volume