252 citations · 1.7k across the 56 of their papers we have counts for
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Learning crystal plasticity using digital image correlation: Examples from discrete dislocation dynamics
Stefanos Papanikolaou, Michail Tzimas, Andrew C. E. Reid +1
Digital image correlation (DIC) is a well-established, non-invasive technique for tracking and quantifying the deformation of mechanical samples under strain. While it provides an…
The Emergence and Role of Dipolar Dislocation Patterns in Discrete and Continuum Formulations of Plasticity
Péter Dusán Ispánovity, Stefanos Papanikolaou, István Groma
The plasticity transition at the yield strength of a crystal typically signifies the tendency of dislocation defects towards relatively unrestricted motion. For an isolated disloca…
Discrete Dislocation Dynamics Simulations of Nanoindentation with Pre-stress: Hardness and Statistics of Abrupt Plastic Events
Hengxu Song, Hakan Yavas, Erik Van der Giessen +1
The yield surface in crystal plasticity can be approached from various directions during mechanical loading. We consider the competition between nanoindentation and tensile loading…
Bending, Nanoindentation and Plasticity Noise in FCC single and poly crystals
Ryder Bolin, Hakan Yavas, Hengxu Song +2
We present a high-throughput nanoindentation study of in-situ bending effects on incipient plastic deformation behavior of polycrystalline and single-crystalline pure aluminum and…
Avalanches and Plastic Flow in Crystal Plasticity: An Overview
Stefanos Papanikolaou, Yinan Cui, Nasr Ghoniem
Crystal plasticity is mediated through dislocations, which form knotted configurations in a complex energy landscape. Once they disentangle and move, they may also be impeded by pe…
The Origins of Asteroidal Rock Disaggregation: Interplay of Thermal Fatigue and Microstructure
Kavan Hazeli, Charles El Mir, Stefanos Papanikolaou +2
The distributions of size and chemical composition in the regolith on airless bodies provides clues to the evolution of the solar system. Recently, the regolith on asteroid (25143)…