Searched for: author:"Xu, Y."
(1 - 20 of 33)

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Zhang, H. (author), Xu, Y. (author), Gan, Y. (author), Schlangen, E. (author), Šavija, B. (author)
This paper presents a validation process of the developed multi-scale modelling scheme on mortar composites. Special attention was paid to make the material structure of real and virtual mortar specimens comparable at the meso-scale. The input mechanical parameters of cement paste (both bulk cement paste and interfacial transition zone) at the...
journal article 2020
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Xu, Y. (author), Zhang, H. (author), Šavija, B. (author), Chaves Figueiredo, S. (author), Schlangen, H.E.J.G. (author)
A method is presented to model deformation and fracture behavior of 3D printed disordered lattice materials under uniaxial tensile load. A lattice model was used to predict crack pattern and load-displacement response of the printed lattice materials. To include the influence of typical layered structures of 3D printed materials in the...
journal article 2019
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Zhang, H. (author), Xu, Y. (author), Gan, Y. (author), Chang, Z. (author), Schlangen, H.E.J.G. (author), Šavija, B. (author)
The aim of this work is to investigate the mechanical performance of hardened cement paste (HCP) under compression at the micrometre length scale. In order to achieve this, both experimental and numerical approaches were applied. In the experimental part, micrometre sized HCP specimens were fabricated and subjected to uniaxial compression by...
journal article 2019
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Xu, Y. (author), Šavija, B. (author)
Cracking in concrete needs to be limited for esthetical and durability reasons. Currently, this is commonly done by using steel rebars in the structure or fiber reinforcement in the material. With certain fiber types and micromechanical design, it is even possible to create cement-based materials with steel like (i.e. quasi-plastic) properties –...
journal article 2019
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Xu, Y. (author), Schlangen, H.E.J.G. (author), Šavija, B. (author)
Strain hardening cementitious composites are a class of cementitious materials showing metal-like (i.e. pseudo-plastic) behavior in tension due to their multiple cracking ability. This is commonly achieved through use of fiber reinforcement (such as PVA) or, similarly, textile reinforcement (TRC). Increasing the ductility is important in...
conference paper 2019
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Zhang, H. (author), Gan, Y. (author), Xu, Y. (author), Zhang, S. (author), Schlangen, H.E.J.G. (author), Šavija, B. (author)
The aim of this work is to predict the micromechanical properties of interfacial transition zone (ITZ) by combining experimental and numerical approaches. In the experimental part, hardened cement paste (HCP) cantilevers (200 μm × 100 μm × 100 μm) attached to a quartzite aggregate were fabricated and tested using micro-dicing saw and...
journal article 2019
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Xu, Y. (author), Šavija, B. (author), Schlangen, H.E.J.G. (author)
Traditionally, mechanical properties of cementitious materials are designed<br/>“chemically”, namely by configuring their mix proportions. Owning to the development of 3D printing technology, “physical” tailoring the meso-structure of cementitious materials to design their mechanical properties becomes possible. In the present study,...
conference paper 2019
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Chaves Figueiredo, S. (author), Romero Rodriguez, C. (author), Ahmed, Zeeshan Y. (author), Bos, D. H. (author), Xu, Y. (author), Salet, Theo M. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author), Bos, Freek P. (author)
New additive manufacturing methods for cementitious materials hold a high potential to increase automation in the construction industry. However, these methods require new materials to be developed that meet performance requirements related to specific characteristics of the manufacturing process. The appropriate characterization methods of...
journal article 2019
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Xu, Y. (author), Borsa, Dana M. (author), Mulder, F.M. (author)
In our efforts to address the issues of Si based anodes for Li ion batteries, such as limited active mass loading, rapid capacity degradation and low scalability in manufacturing, we reported a scalable, high mass loading, and additive-free Si nanoparticles (NP) deposition based electrode, but the achieved capacity and cycle life were still...
journal article 2019
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Mercuri, L. (author), Romero Rodriguez, C. (author), Xu, Y. (author), Chaves Figueiredo, S. (author), Mors, R.M. (author), Rossi, E. (author), Anglani, G. (author), Antonaci, P. (author), Šavija, B. (author), Schlangen, E. (author)
Soft inclusions, such as capsules and other particulate admixtures are increasingly being used in cementitious materials for functional purposes (i.e. self-healing and self-sensing of concrete). Yet, their influence on the fracture behaviour of the material is sometimes overlooked and requires in-depth study for the optimization of mechanical...
conference paper 2019
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Xu, Y. (author)
Modern life is moving towards a mobile and sustainable energy economy, in which rechargeable batteries play an essential role as a power supply. The current battery of choice is Li ion battery that is dominating the market but faces great challenges for future use mainly due to the demand for higher capacities and target for cost reduction. Next...
doctoral thesis 2018
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Xu, Y. (author), Mulder, F.M. (author)
MgH<sub>2</sub> has been considered as a potential anode material for Li ion batteries due to its low cost and high theoretical capacity. However, it suffers from low electronic conductivity and slow kinetics for hydrogen sorption at room temperature that results in poor reversibility, cycling stability and rate capability for Li ion storage....
journal article 2018
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Zhang, H. (author), Šavija, B. (author), Xu, Y. (author), Schlangen, H.E.J.G. (author)
Cement paste possesses complex microstructural features including defects/pores over a range of length-scales, from nanometres to millimetres in size. As a consequence, it exhibits different behaviour under loading depending on the size. In this work, cubic specimens in a size range of 1: 400 were produced and tested by a one-sided splitting...
journal article 2018
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Lv, Shasha (author), Verhallen, T.W. (author), Vasileiadis, A. (author), Ooms, F.G.B. (author), Xu, Y. (author), Li, Z. (author), Li, Zhengcao (author), Wagemaker, M. (author)
Electrical mobility demands an increase of battery energy density beyond current lithium-ion technology. A crucial bottleneck is the development of safe and reversible lithium-metal anodes, which is challenged by short circuits caused by lithium-metal dendrites and a short cycle life owing to the reactivity with electrolytes. The evolution of...
journal article 2018
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Huigen, Vincent (author), Xu, Y. (author), Schlangen, H.E.J.G. (author), Šavija, B. (author)
In order to improve the behaviour of cementitious material under in bending, 3D printed polymeric lattice meshes were used as an alternative to fibre reinforcement. Lattice meshes with different cell sizes and different surface roughness were designed and printed. Plain mortar samples and reinforced samples were casted. After curing, 4-point...
conference paper 2018
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Li, Z. (author), Ganapathy, S. (author), Xu, Y. (author), Zhu, Quanyao (author), Chen, Wen (author), Kochetkov, Ivan (author), George, C. (author), Nazar, Linda F. (author), Wagemaker, M. (author)
journal article 2018
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Xu, Y. (author), Sreekumar Menon, A. (author), Harks, P.P.R.M.L. (author), Hermes, Dorothee C. (author), Haverkate, Lucas A. (author), Unnikrishnan, Sandeep (author), Mulder, F.M. (author)
Li and Na metals have the highest theoretical anode capacity for Li/Na batteries, but the operational safety hazards stemming from uncontrolled growth of Li/Na dendrites and unstable electrode-electrolyte interfaces hinder their real-world applications. Recently, the emergence of 3D conductive scaffolds aimed at mitigating the dendritic...
journal article 2018
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Peng, B. (author), Xu, Y. (author), Liu, Kai (author), Wang, Xiaoqun (author), Mulder, F.M. (author)
Black phosphorus (BP) has received increasing research attention as an anode material in sodium-ion batteries (SIBs), owing to its high capacity, electronic conductivity, and chemical stability. However, it is still challenging for BP-based SIB anodes to achieve a high electrochemical performance utilizing cost-effective materials and...
journal article 2017
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Peng, B. (author), Xu, Y. (author), Wang, Xiaoqun (author), Shi, Xinghua (author), Mulder, F.M. (author)
Super P carbon black (SPCB) has been widely used as a conducting additive in Li/Na ion batteries to improve the electronic conductivity. However, there has not yet been a comprehensive study on its structure and electrochemical properties for Li/Na ion uptake, though it is important to characterize its contribution in any study of active...
journal article 2017
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Li, Z. (author), Ganapathy, S. (author), Xu, Y. (author), Heringa, J.R. (author), Zhu, Quanyao (author), Chen, Wen (author), Wagemaker, M. (author)
The lithium air, or Li–O2, battery system is a promising electrochemical energy storage system because of its very high theoretical specific energy, as required by automotive applications. Fundamental research has resulted in much progress in mitigating detrimental (electro)chemical processes; however, the detailed structural evolution of the...
journal article 2017
Searched for: author:"Xu, Y."
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