Microstructure Designed Flexoelectric Materials and Tip Force for Multifunctional Applications

S Wang, X Wang, W Tong, X Li, Y Zhang - Nano Energy, 2024 - Elsevier
Flexoelectricity with size-dependent induced polarization under nonuniform stress for high-
efficient energy conversion has shown considerable potential in energy harvesting and …

Direct modeling of the elastic properties of single 3D printed composite filaments using X-ray computed tomography images segmented by neural networks

E Polyzos, C Nikolaou, D Polyzos… - Additive …, 2023 - Elsevier
This study introduces a new method for creating accurate microscale finite element (FE)
models of 3D printed composites. The approach involves utilizing conventional micro …

Modeling elastic properties of 3D printed composites using real fibers

E Polyzos, D Van Hemelrijck, L Pyl - International Journal of Mechanical …, 2022 - Elsevier
The microstructure of 3D printed composites is inherently different than traditional
composites due to the manufacturing process. The differences influence morphological …

[HTML][HTML] Stochastic semi-analytical modeling of reinforced filaments for additive manufacturing

E Polyzos, D Van Hemelrijck, L Pyl - Composites Part B: Engineering, 2023 - Elsevier
This study presents a novel stochastic modeling approach that addresses two challenges
encountered in micromechanical modeling of short-fiber composites. Firstly, the challenge of …

Thermally and mechanically induced strain gradient fields in architected 2D materials and beam structures

DC Rodopoulos, N Karathanasopoulos - International Journal of Solids …, 2024 - Elsevier
The current contribution investigates the strain-gradient thermomechanical performance of
architected materials and structures with uniform and graded inner designs. To that scope …

An explainable machine learning-based probabilistic framework for the design of scaffolds in bone tissue engineering

G Drakoulas, T Gortsas, E Polyzos… - … and Modeling in …, 2024 - Springer
Recently, 3D-printed biodegradable scaffolds have shown great potential for bone repair in
critical-size fractures. The differentiation of the cells on a scaffold is impacted among other …

Micro-scale residual stress and deformation analysis in bimetal bronze-stainless steel samples produced by laser powder bed fusion technology

ES Statnik, PA Somov, DD Zherebtsov… - Materials Science and …, 2022 - Elsevier
Additive manufacturing technologies attract significant interest as a route to fabricate
structural elements with complex net shapes. 3D printing may offer the option of combining …

Modeling of 3D-printed composite filaments using X-ray computer tomography images segmented by neural networks

C Nikolaou, E Polyzos, Y Zhu, D Polyzos, L Pyl - Additive Manufacturing, 2024 - Elsevier
This study introduces a novel semi-analytical two-scale approach to model 3D-printed
composite filament where both fibers and voids are present. The proposed approach utilizes …

Analytical probabilistic progressive damage modeling of single composite filaments of material extrusion

E Polyzos, E Vereroudakis, S Malefaki… - International Journal of …, 2024 - Elsevier
This research focuses on investigating the elastic and damage characteristics of individual
composite beads utilized in additively manufactured (3D printed) composites. A novel …

Probabilistic modeling of fiber–matrix interface stresses in short-fiber 3D printed composites using effective field methods

E Polyzos, D Van Hemelrijck, L Pyl - Mechanics of Materials, 2024 - Elsevier
This study presents a novel probabilistic modeling approach to investigate the impact of
interfacial damage between fibers and the matrix on 3D-printed composites. The approach …