Abstract Bimetallic structures processed via laser-based additive manufacturing (AM) efficiently combine multiple materials in single components, which are difficult to achieve using traditional methods. However, limited understanding exists on how processing parameters influence the resulting microstructures and thermal profiles of base material during processing, affecting component performance. To this end, we present a combined numerical and experimental study on the effects of input laser p...
Abstract This work reports the self-healing behavior of epoxy-based double-layer nanocomposite coatings designed to mitigate corrosion in various industrial applications. Zirconia (ZrO2) nanoparticles were used as a carrier to load separately self-healing agent, polyethyleneimine (PEI), and corrosion inhibitor, imidazole (IM). The loaded ZrO2 nanoparticles with IM and PEI were doped into the epoxy matrix and applied on polished steel substrate to form pre and top layers of nanocomposite coatings...
Last. Tae Geun Kim(KU: Korea University)H-Index: 27
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Abstract Sneak path current generated by adjacent cells in three-dimensional (3D) memristor arrays must be curbed while securing the multi-bit storage capability of each cell to aid in the cost-effective increase in array size. For this purpose, a 3D stackable TaOx/HfO2-based selectorless memristor has been proposed and optimized via capacitance-dependent voltage division analysis. The proposed device utilizes the formation or rupture of conductive filaments for self-rectifying resistive switchi...
#1Zaoli Zhang(Austrian Academy of Sciences)H-Index: 31
#2Arsham Ghasemi(Austrian Academy of Sciences)H-Index: 7
Last. Matthias Bartosik(TU Wien: Vienna University of Technology)H-Index: 19
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Abstract Defects significantly affect the mechanical properties of materials. However, quantitatively correlating the point defects with mechanical property could be a challenge. In this study, we explore the point defect effects on the structure and property of magnetron sputtered TiN nanocrystalline films (synthesized using different negative bias potential) via a combination of analytical techniques and density functional theory (DFT) calculations. We gain insights into the structural evoluti...
Last. Yongqiang Hao(SJTU: Shanghai Jiao Tong University)H-Index: 3
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Abstract In this paper, the results of the study on the performance of four groups of different honeycomb structures show that the application of honeycomb structure in the design of biomimetic bone scaffold is feasible and promising. In terms of static properties, the elastic modulus (1.6–3 GPa) of the four scaffolds matched the elastic modulus of human cancellous bone (0.1–4.5 GPa), and the yield strength (88–146 MPa) was much higher than that of the femoral neck (0.56–3.71 MPa). In terms of p...
Abstract 3D printed titanium implants have gained substantial attention in the medical fields of bone tissue and dental implants. Surface modification of titanium implants such as TiO2 nanotubes (TNT) make up for the interaction between the surface of titanium implants and the surrounding tissues by providing nanoporous structures and hydrophilic surfaces. In this study, a 3D printed Cu-bearing Ti6Al4V (TC4) alloy with micro/nano-topographical was employed as material model to explore the role p...
Abstract Large bone fractures often require porous implants for complete healing. In this work, we numerically investigate the suitability of three topologically very different architected materials for long bone implants: the octet truss-based lattice, the Schwartz P minimal surface-based lattice and the spinodal stochastic surface-based lattice. Each implant topology (reinforcement) and its surrounding tissue (soft matrix) are modeled as a composite system via finite element analysis. Performa...
Last. Duan Yuechen(Zhengzhou University)H-Index: 1
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Abstract Lightweight origami structure has received increasing attention in the past years. This paper presents a new origami-inspired honeycomb sandwich plate, taking inspiration from two emerging sandwich structures reported in literatures. The purpose of this work was to investigate the influence of structural parameters on the impact response and demonstrate the outperformance of this novel sandwich structure. The low-velocity impact response of the origami-inspired honeycomb sandwich was in...
Last. Tao Jing(THU: Tsinghua University)H-Index: 12
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Abstract The additively manufactured Ti-6Al-4V part suffers from undesirable α ′ phase, which leads to a decrease of its plasticity. In this research, density-based constituent phase simulation method is applied to investigate the phase transformation of Ti-6Al-4V during wire laser additive manufacturing (WLAM). Single-layer and five-layer WLAM experiments are conducted to validate the accuracy of the simulation. The simulation results agree with the experimental results. By in-situ investigatin...